OWNER’S MANUAL - · PDF fileImportant manual information EMU31285 To the owner Thank you for selecting a Yamaha outboard motor. This Owner’s Manual contains infor-mation needed

F50F60F70T50T60

OWNER’S MANUAL

6C1-28199-19

U.S.A.EditionLIT-18626-08-72

qRead this manual carefully before operating this outboard motor.

6C1-9-19 Hyoshi.indd 1 2010/02/18 14:41:36

EMU25052

Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.

cover21.fm 1 ページ２０１０年２月１８日　木曜日　午後２時８分

6C1-9-19 Hyoshi.indd 2 2010/02/18 14:41:36

Important manual informationEMU31285

To the ownerThank you for selecting a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for proper operation, mainte-nance and care. A thorough understandingof these simple instructions will help you ob-tain maximum enjoyment from your newYamaha. If you have any question about theoperation or maintenance of your outboardmotor, please consult a Yamaha dealer.In this Owner’s Manual particularly importantinformation is distinguished in the followingways.

: This is the safety alert symbol. It isused to alert you to potential personal injuryhazards. Obey all safety messages that fol-low this symbol to avoid possible injury ordeath.

WARNINGEWM00781

A WARNING indicates a hazardous situa-tion which, if not avoided, could result indeath or serious injury.

NOTICEECM00701

A NOTICE indicates special precautionsthat must be taken to avoid damage to theoutboard motor or other property.

TIP:A TIP provides key information to make pro-cedures easier or clearer.

Yamaha continually seeks advancements inproduct design and quality. Therefore, whilethis manual contains the most current prod-uct information available at the time of print-ing, there may be minor discrepanciesbetween your machine and this manual. If

there is any question concerning this manu-al, please consult your Yamaha dealer.

TIP:The F50TR, F60TR, F70A, F70HA, T50TR,T60TR and the standard accessories areused as a base for the explanations and illus-trations in this manual. Therefore someitems may not apply to every model.EMU25112

F50, F60, F70, T50, T60OWNER’S MANUAL

©2010 by Yamaha Motor Corporation, U.S.A.1st edition, February 2010

All rights reserved.Any reprinting or unauthorized usewithout the written permission ofYamaha Motor Corporation, U.S.A.

is expressly prohibited.Printed in Japan

P/N LIT-18626-08-72

6C1-9-19.book 1 ページ２０１０年２月１７日　水曜日　午後１時３８分

Table of contentsSafety information............................. 1

Outboard motor safety ..................... 1Propeller............................................ 1Rotating parts.................................... 1Hot parts ........................................... 1Electric shock.................................... 1Power trim and tilt ............................. 1Engine shut-off cord (lanyard)........... 1Gasoline............................................ 1Gasoline exposure and spills ............ 2Carbon monoxide.............................. 2Modifications ..................................... 2

Boating safety .................................. 2Alcohol and drugs ............................. 2Personal flotation devices ................. 2People in the water ........................... 2Passengers ....................................... 2Overloading....................................... 2Avoid collisions ................................. 3Weather ............................................ 3Accident reporting ............................. 3Boat education and training .............. 3Passenger training ............................ 4Boating safety publications ............... 4Laws and regulations ........................ 4

Boating organizations....................... 4Basic boating rules

(Rules of the road) ......................... 4Steering and sailing rules and

sound signals.................................. 4Rules when encountering vessels .... 5Other special situations..................... 6

General information .......................... 9Identification numbers record........... 9

Outboard motor serial number .......... 9Key number....................................... 9

Read manuals and labels............... 10Warning labels ............................... 10

Specifications and requirements.................................... 14

Specifications ................................. 14Remote control requirements......... 16Battery requirements...................... 16

Specifications of Battery ................. 16Mounting battery ............................. 16

Multiple batteries ............................. 16Propeller selection ......................... 17Start-in-gear protection .................. 17Engine oil requirements ................. 18Fuel requirements .......................... 18

Gasoline .......................................... 18Ring Free Fuel Additive................... 19

Anti-fouling paint ............................ 19Motor disposal requirements.......... 19Emergency equipment ................... 19Emission control information.......... 19

North American models................... 19Star labels ....................................... 20

Components .................................... 22Components diagram..................... 22

Fuel tank ......................................... 25Fuel joint.......................................... 25Fuel gauge ...................................... 26Fuel tank cap................................... 26Air vent screw.................................. 26Remote control box ......................... 26Remote control lever ....................... 26Neutral interlock trigger ................... 26Neutral throttle lever........................ 26Tiller handle..................................... 27Gear shift lever................................ 27Throttle grip ..................................... 27Throttle indicator ............................. 27Throttle friction adjuster................... 28Engine shut-off cord (lanyard)

and clip.......................................... 28Engine stop button .......................... 29Main switch ..................................... 29Steering friction adjuster ................. 29Power trim and tilt switch on

remote control or tiller handle ....... 30Power trim and tilt switch on

bottom cowling .............................. 31Variable trolling RPM switches........ 31Trim tab with anode......................... 32Tilt support lever for power trim

and tilt model................................. 32Cowling lock lever(s) (turn type)...... 33Flushing device ............................... 33Fuel filter/Water separator............... 33


Table of contentsInstruments and indicators ............ 35

Digital tachometer .......................... 35Tachometer ..................................... 35Trim meter....................................... 35Hour meter ...................................... 35Low oil pressure-alert indicator ....... 36Overheat-alert indicator .................. 36

Digital speedometer ....................... 36Speedometer .................................. 36Fuel gauge ...................................... 37Trip meter / Clock / Voltmeter ......... 37Fuel level-alert indicator .................. 38Low battery voltage-alert

indicator ........................................ 38Analog tachometer ......................... 38

Low oil pressure-alert indicator ....... 38Overheat-alert indicator .................. 39

Analog trim meter........................... 39Command link multifunction

meters .......................................... 39Command link multifunction

tachometers ................................. 40Start-up checks ............................... 41Adjusting trolling speed................... 41Low oil pressure-alert...................... 41Overheat alert ................................. 42Water separator alert ...................... 42Engine trouble alert ......................... 43Low battery voltage-alert................. 43

Command link multifunction speed & fuel meters ..................... 44

Command link multifunction speedometers .............................. 45

Command link multifunction fuel management meters .................... 45

Engine control system.................... 47Alert system ................................... 47

Overheat alert ................................. 47Low oil pressure alert ...................... 47

Installation ....................................... 49Installation ...................................... 49

Mounting the outboard motor .......... 49Operation ......................................... 51

First-time operation ........................ 51Fill engine oil ................................... 51

Breaking in engine .......................... 51Getting to know your boat ............... 51

Checks before starting engine ....... 51Fuel level......................................... 51Remove the top cowling.................. 52Fuel system..................................... 52Controls........................................... 52Engine shut-off cord (lanyard)......... 53Engine oil ........................................ 53Engine ............................................. 54Flushing device ............................... 54Install top cowling............................ 54Power trim and tilt system ............... 55Battery............................................. 55

Filling fuel....................................... 55Operating engine ........................... 56

Sending fuel (portable tank) ............ 57Starting engine ................................ 58

Checks after starting engine .......... 60Cooling water .................................. 60

Warming up engine........................ 61Manual start and electric start

models .......................................... 61Checks after engine warm up ........ 61

Shifting ............................................ 61Stop switches .................................. 61

Shifting ........................................... 61Stopping boat................................. 62Trolling ........................................... 63

Adjusting trolling speed ................... 63Stopping engine............................. 63

Procedure........................................ 63Trimming outboard motor............... 64

Adjusting trim angle (Power trim and tilt)....................... 65

Adjusting boat trim .......................... 66Tilting up and down........................ 66

Procedure for tilting up (power trim and tilt models)........... 67

Procedure for tilting down (power trim and tilt models)........... 68

Shallow water................................. 69Power trim and tilt models............... 69

Cruising in other conditions............ 70Maintenance .................................... 71


Table of contentsTransporting and storing outboard

motor ............................................ 71Storing outboard motor ................... 71Procedure ....................................... 72Lubrication ...................................... 73Cleaning and anticorrosion

measures ...................................... 73Flushing power unit ......................... 73Cleaning the outboard motor .......... 75Checking painted surface of

outboard motor ............................. 75Periodic maintenance..................... 75

Replacement parts .......................... 75Maintenance interval guidelines...... 76Maintenance chart 1 ....................... 77Maintenance chart 2 ....................... 79Greasing ......................................... 80Cleaning and adjusting spark

plug ............................................... 82Inspecting idle speed ...................... 83Changing engine oil ........................ 83Inspecting wiring and connectors.... 85Checking propeller .......................... 85Removing propeller ......................... 86Installing propeller ........................... 86Changing gear oil ............................ 87Cleaning fuel tank ........................... 88Inspecting and replacing

anode(s)........................................ 89Checking battery

(for electric start models) .............. 89Connecting the battery .................... 90Disconnecting the battery ............... 91

Trouble Recovery............................ 92Troubleshooting ............................. 92Temporary action in emergency..... 95

Impact damage ............................... 95Replacing fuse ................................ 95Power trim and tilt will not

operate.......................................... 96Water separator-alert indicator

blinks while cruising ...................... 97Starter will not operate .................. 100Emergency starting engine ........... 100

Treatment of submerged motor....101

Consumer information ................. 102YAMAHA MOTOR

CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY .............................. 102

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA............. 104


1

Safety informationEMU33622

Outboard motor safetyObserve these precautions at all times.EMU36501

PropellerPeople can be injured or killed if they comein contact with the propeller. The propellercan keep moving even when the motor is inneutral, and sharp edges of the propeller cancut even when stationary.● Stop the engine when a person is in the

water near you.● Keep people out of reach of the propeller,

even when the engine is off.EMU33630

Rotating partsHands, feet, hair, jewelry, clothing, PFDstraps, etc. can become entangled with inter-nal rotating parts of the engine, resulting inserious injury or death.Keep the top cowling in place whenever pos-sible. Do not remove or replace the cowlingwith the engine running.Only operate the engine with the cowling re-moved according to the specific instructionsin the manual. Keep hands, feet, hair, jewel-ry, clothing, PFD straps, etc. away from anyexposed moving parts.EMU33640

Hot partsDuring and after operation, engine parts arehot enough to cause burns. Avoid touchingany parts under the top cowling until the en-gine has cooled.EMU33650

Electric shockDo not touch any electrical parts while start-ing or operating the engine. They can causeshock or electrocution.EMU33660

Power trim and tiltBody parts can be crushed between the mo-

tor and the clamp bracket when the motor istrimmed or tilted. Keep body parts out of thisarea at all times. Be sure no one is in thisarea before operating the power trim and tiltmechanism.The power trim and tilt switches operateeven when the main switch is off. Keep peo-ple be away from the switches wheneverworking around the motor.Never get under the lower unit while it is tilt-ed, even when the tilt support lever is locked.Severe injury could occur if the outboard mo-tor accidentally falls.EMU33671

Engine shut-off cord (lanyard)Attach the engine shut-off cord so that theengine stops if the operator falls overboardor leaves the helm. This prevents the boatfrom running away under power and leavingpeople stranded, or running over people orobjects.Always attach the engine shut-off cord to asecure place on your clothing or your arm orleg while operating. Do not remove it to leavethe helm while the boat is moving. Do not at-tach the cord to clothing that could tearloose, or route the cord where it could be-come entangled, preventing it from function-ing.Do not route the cord where it is likely to beaccidentally pulled out. If the cord is pulledduring operation, the engine will shut off andyou will lose most steering control. The boatcould slow rapidly, throwing people and ob-jects forward.EMU33810

GasolineGasoline and its vapors are highly flam-mable and explosive. Always, refuel ac-cording to the procedure on page 56 toreduce the risk of fire and explosion.


Safety information

2

EMU33820

Gasoline exposure and spillsTake care not to spill gasoline. If gasolinespills, wipe it up immediately with dry rags.Dispose of rags properly.If any gasoline spills onto your skin, immedi-ately wash with soap and water. Changeclothing if gasoline spills on it.If you swallow gasoline, inhale a lot of gaso-line vapor, or get gasoline in your eyes, getimmediate medical attention. Never siphonfuel by mouth.EMU33900

Carbon monoxideThis product emits exhaust gases which con-tain carbon monoxide, a colorless, odorlessgas which may cause brain damage or deathwhen inhaled. Symptoms include nausea,dizziness, and drowsiness. Keep cockpit andcabin areas well ventilated. Avoid blockingexhaust outlets.EMU33780

ModificationsDo not attempt to modify this outboard mo-tor. Modifications to your outboard motormay reduce safety and reliability, and renderthe outboard unsafe or illegal to use.EMU33740

Boating safetyThis section includes a few of the many im-portant safety precautions that you shouldfollow when boating.EMU33710

Alcohol and drugsNever operate after drinking alcohol or takingdrugs. Intoxication is one of the most com-mon factors contributing to boating fatalities.EMU33720

Personal flotation devicesHave an approved personal flotation device(PFD) on board for every occupant. Yamaharecommends that you must wear a PFD

whenever boating. At a minimum, childrenand non-swimmers should always wearPFDs, and everyone should wear PFDswhen there are potentially hazardous boat-ing conditions.EMU33731

People in the waterAlways watch carefully for people in the wa-ter, such as swimmers, skiers, or divers,whenever the engine is running. Whensomeone is in the water near the boat, shiftinto neutral and stop the engine.Stay away from swimming areas. Swimmerscan be hard to see.The propeller can keep moving even whenthe motor is in neutral. Stop the engine whena person is in the water near you.EMU33751

PassengersConsult your boat manufacturer’s instruc-tions for details about appropriate passengerlocations in your boat and be sure all pas-sengers are positioned properly before ac-celerating and when operating above an idlespeed. Standing or sitting in non-designatedlocations may result in being thrown eitheroverboard or within the boat due to waves,wakes, or sudden changes in speed or direc-tion. Even when people are positioned prop-erly, alert your passengers if you must makeany unusual maneuver. Always avoid jump-ing waves or wakes.EMU33760

OverloadingDo not overload the boat. Consult the boatcapacity plate or boat manufacturer for max-imum weight and number of passengers. Besure that weight is properly distributed ac-cording to the boat manufacturers instruc-tions. Overloading or incorrect weightdistribution can compromise the boats han-dling and lead to an accident, capsizing or


Safety information

3

swamping.EMU33772

Avoid collisionsScan constantly for people, objects, and oth-er boats. Be alert for conditions that limit yourvisibility or block your vision of others.

Operate defensively at safe speeds andkeep a safe distance away from people, ob-jects, and other boats.● Do not follow directly behind other boats or

waterskiers.● Avoid sharp turns or other maneuvers that

make it hard for others to avoid you or un-derstand where you are going.

● Avoid areas with submerged objects orshallow water.

● Ride within your limits and avoid aggres-sive maneuvers to reduce the risk of lossof control, ejection, and collision.

● Take early action to avoid collisions. Re-member, boats do not have brakes, andstopping the engine or reducing throttlecan reduce the ability to steer. If you arenot sure that you can stop in time beforehitting an obstacle, apply throttle and turnin another direction.

EMU33790

WeatherStay informed about the weather. Checkweather forecasts before boating. Avoidboating in hazardous weather.

EMU33800

Accident reportingBoat operators are required by law to file aBoating Accident Report with their stateboating law enforcement agency if their boatis involved in any of the following accidents:1. There is loss of life or probable loss of

life.2. There is personal injury that requires

medical attention beyond first aid.3. There is property damage to boats or

other property over a certain amount.4. There is complete loss of a boat.Contact local law enforcement personnel if areport is necessary.EMU33870

Boat education and trainingOperators should take a boating safetycourse. This may be required in your state.Many of the organizations listed in the nextsection can provide information about cours-es in your area.You may also want to consider an Internet-based program for basic boater education.The Online Boating Safety Course providedby the BoatU.S. Foundation, is approved bythe National Association of State BoatingLaw Administrators (NASBLA) and recog-nized by the United States Coast Guard.Most, but not all, states accept this course tomeet their minimum requirements. While itcannot replace an in-depth course such asone offered by the U.S. Coast Guard, U.S.Power Squadron, or other organization, thisonline course does provide a general over-view of the basics in boating safety, require-ments, navigation, and operation. Uponsuccessful completion of the course, theuser can download a certificate of comple-tion immediately or, for a small charge, re-quest one by mail. To take this free course,go to boatus.org.

ZMU06025


Safety information

4

EMU33880

Passenger trainingMake sure at least one other passenger istrained to operate the boat in the event of anemergency.EMU33890

Boating safety publicationsBe informed about boating safety. Additionalpublications and information can be obtainedfrom many boating organizations.EMU33590

Laws and regulationsKnow the marine laws and regulations whereyou will be boating- and obey them. Severalsets of rules prevail according to geographiclocation, but all are basically the same as theInternational Rules of the Road. The rulespresented in the following section are con-densed- and have been provided for yourconvenience only.Contact the U.S. Coast Guard, the NationalAssociation of State Boating Law Adminis-trators, or your local Power Squadron for acomplete set of rules governing the waters inwhich you will be using your boat.EMU33682

Boating organizationsThe following organizations provide boatingsafety training and information about boatingsafety and laws.

United States Coast GuardConsumer Affairs Staff (G-BC)Office of Boating, Public, and Consumer Af-fairsU.S. Coast Guard HeadquartersWashington, D.C. 20593-0001http://www.uscgboating.org/

United States Power Squadrons1-888-FOR-USPS (1-888-367-8777)http://www.usps.org/

Boat Owners Association of The UnitedStates1-800-336-BOAT (1-800-336-2628)http://www.boatus.com/

National Association of State BoatingLaw Administrators (NASBLA)1500 Leestown Road, Suite 330Lexington, KY 40511 859-225-9497http://www.nasbla.org/

National Marine Manufacturers Associa-tion (NMMA)200 East Randolph DriveSuite 5100Chicago, IL 60601http://www.nmma.org/

Marine Retailers Association of America155 N. Michigan Ave. Chicago,IL 60304http://www.mraa.com/

EMU33691

Basic boating rules (Rules of the road)

Just as there are rules that apply when youare driving on streets and highways, thereare waterway rules that apply when you aredriving your boat. These rules are used inter-nationally. (For U.S.A.: and are also en-forced by the United States Coast Guard andlocal agencies.) You should be aware ofthese rules, and follow them whenever youencounter another vessel on the water.EMU33700

Steering and sailing rules and sound signalsWhenever two vessels on the water meetone another, one vessel has the right-of-


Safety information

5

way; it is called the “stand-on” vessel. Thevessel that does not have the right-of-way iscalled the “give-way” or “burdened”vessel.These rules determine which vessel has theright-of-way, and what each vessel shoulddo.

Stand-on vesselThe vessel with the right-of-way has the dutyto continue its course and speed, except toavoid an immediate collision. When youmaintain your direction and speed, the othervessel will be able to determine how best toavoid you.

Give-way vesselThe vessel that does not have the right-of-way has the duty to take positive and timelyaction to stay out of the way of the Stand-Onvessel. Normally, you should not cross infront of the vessel with the right-of-way. Youshould slow down or change directions brief-ly and pass behind the other vessel. Youshould always move in such a way that theoperator of the other vessel can see whatyou are doing.“ The general prudential rule ”This rule is called Rule 2 in the InternationalRules and says,“ In obeying and construing these rules dueregard shall be had to all dangers of naviga-tion and collision, and to any special circum-stances, which may render a departure fromthe above rules necessary in order to avoidimmediate danger.”In other words, follow the standard rules ex-cept when a collision will occur unless bothvessels try to avoid each other. If that is thecase, both vessels become “ Give-Way ”vessels.

EMU25521

Rules when encountering vesselsThere are three main situations that you mayencounter with other vessels which couldlead to a collision unless the Steering Rulesare followed:Meeting: (you are approaching another ves-sel head-on)Crossing: (you are traveling across the oth-er vessel’s path)Overtaking: (you are passing or beingpassed by another vessel)In the following illustration, your boat is in thecenter. You should give the right-of-way toany vessels shown in white area (you are theGive-Way vessel). Any vessels in the shad-ed area must yield to you (they are the Give-Way vessels). Both you and the meetingvessel must alter course to avoid each other.

MeetingIf you are meeting another power vesselhead on, and are close enough to run the riskof collision, neither of you has the right-of-way Both of you should alter course to avoidan accident. You should keep the other ves-sel on your port (left) side. This rule doesn’tapply if both of you will clear one another ifyou continue on your set course and speed.


Safety information

6

CrossingWhen two power driven vessels are crossingeach other’s path close enough to run therisk of collision, the vessel which has the oth-er on the starboard (right) side must keep outof the way of the other. If the other vessel ison your right, you must keep out of its way;you are the Give-Way vessel. If the othervessel is on your port (left) side, rememberthat you should maintain course and direc-tion, provided the other vessel gives you theright-of-way as it should.

OvertakingIf you are passing another vessel, you arethe “Give-Way” vessel. This means that theother vessel is expected to maintain itscourse and speed. You must stay out of itsway until you are clear of it. Likewise, if an-other vessel is passing you, you shouldmaintain your speed and direction so that theother vessel can steer itself around you.

EMU25531

Other special situationsThere are three other rules you should beaware of when driving your boat around oth-er vessels.Narrow channels and bendsWhen navigating in narrow channels, youshould keep to the right when it is safe andpractical to do so. If the operator of a power-driven vessel is preparing to go around abend that may obstruct the view of other wa-ter vessels, the operator should sound a pro-longed blast on the whistle (4 to 6 seconds).If another vessel is around the bend, it tooshould sound the whistle. Even if no reply isheard, however, the vessel should still pro-ceed around the bend with caution. If younavigate such waters with your boat, you willneed to carry a portable air horn, availablefrom local marine supply stores.Fishing vessel right-of-wayAll vessels that are fishing with nets, lines ortrawls are considered to be “fishing vessels”under the International Rules. Vessels withtrolling lines are not considered fishing ves-sels. Fishing vessels have the right-of-wayregardless of position. Fishing vessels can-not, however, impede the passage of othervessels in narrow channels.Sailing vessel right-of-waySailing vessels should normally be given theright-of-way. The exceptions to this are:1. When the sailing vessel is overtaking the

power-driven vessel, the power-drivenvessel has the right-of-way.

2. Sailing vessels should keep clear of anyfishing vessel.

3. In a narrow channel, a sailing vesselshould not hamper the safe passage ofa power-driven vessel that can navigateonly in such a channel.


Safety information

7

Reading buoys and other markersThe waters of the United States are markedfor safe navigation by the lateral system ofbuoyage. Simply put, buoys and markershave an arrangement of shapes, colors,numbers and lights to show which side of thebuoy a boater should pass on when navigat-ing in a particular direction. The markings onthese buoys are oriented from the perspec-tive of being entered from seaward (the boat-er is going towards the port). This means thatred buoys are passed on the starboard(right) side when proceeding from open wa-ter into port, and black buoys are to port (left)side. When navigating out of port, your posi-tion with respect to the buoys should be re-versed; red buoys should be to port andblack buoys to starboard.Many bodies of water used by boaters areentirely within the boundaries of a particularstate. The Uniform State Waterway MarkingSystem has been devised for these waters.This system uses buoys and signs with dis-tinctive shapes and colors to show regulatoryor advisory information. These markers arewhite with black letters and orange boarders.They signify speed zones, restricted areas,danger areas, and general information.Remember, markings may vary by geo-graphic location. Always consult local boat-ing authorities before driving your boat inunfamiliar waters.


Safety information

8

ZMU01708


9

General informationEMU25171

Identification numbers recordEMU25183

Outboard motor serial numberThe outboard motor serial number isstamped on the label attached to the portside of the clamp bracket.Record your outboard motor serial number inthe spaces provided to assist you in orderingspare parts from your Yamaha dealer or forreference in case your outboard motor is sto-len.

EMU25190

Key numberIf a main key switch is equipped with the mo-tor, the key identification number is stampedon your key as shown in the illustration.Record this number in the space provided forreference in case you need a new key.

1. Outboard motor serial number location

1. Key number


General information

10

EMU33522

Read manuals and labelsBefore operating or working on this outboard motor:● Read this manual.● Read any manuals supplied with the boat.● Read all labels on the outboard motor and the boat.If you need any additional information, contact your Yamaha dealer.EMU33832

Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements.F50, F60, T50, T60

1 2

3

ZMU05676


General information

11

F70

3

1 2

ZMU07102


General information

12

1 2

3

ZMU05670


General information

13

EMU33843

SymbolsThe following symbols mean as follows.

Notice/Warning

Read Owner’s Manual

Hazard caused by continuous rotation

Electrical hazard

Remote control lever/gear shift lever operat-ing direction, dual direction

Engine start/ Engine cranking

ZMU05696

ZMU05664

ZMU05665

ZMU05666

ZMU05667

ZMU05668


14

Specifications and requirementsEMU34520

SpecificationsTIP:“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-num propeller installed.Likewise, “(SUS)” represents the value forstainless steel propeller installed and “(PL)”for plastic propeller installed.

TIP:“*” means, select the engine oil referring tothe chart of engine oil paragraph. For furtherinformation, see page 18.EMU2821J

Dimension:Overall length:

F50TR 706 mm (27.8 in)F60TR 706 mm (27.8 in)F70A 713 mm (28.1 in)T50TR 706 mm (27.8 in)T60TR 706 mm (27.8 in)

Overall width: F50TR 385 mm (15.2 in)F60TR 385 mm (15.2 in)F70A 386 mm (15.2 in)T50TR 385 mm (15.2 in)T60TR 385 mm (15.2 in)

Overall height L: F50TR 1414 mm (55.7 in)F60TR 1414 mm (55.7 in)F70A 1476 mm (58.1 in)T50TR 1455 mm (57.3 in)T60TR 1455 mm (57.3 in)

Transom height L: F50TR 527 mm (20.7 in)F60TR 527 mm (20.7 in)F70A 534 mm (21.0 in)T50TR 530 mm (20.9 in)T60TR 530 mm (20.9 in)

Weight (AL) L:

F50TR 113.0 kg (249 lb)F60TR 113.0 kg (249 lb)F70A 119.0 kg (262 lb)T50TR 118.0 kg (260 lb)T60TR 123.0 kg (271 lb)

Performance:Full throttle operating range:

F50TR 5000–6000 r/minF60TR 5000–6000 r/minF70A 5300–6300 r/minT50TR 5000–6000 r/minT60TR 5000–6000 r/min

Maximum output: F50TR 36.8 kW@5500 r/min (50 HP@5500 r/min)F60TR 44.1 kW@5500 r/min (60 HP@5500 r/min)F70A 51.5 kW@5800 r/min (70 HP@5800 r/min)T50TR 36.8 kW@5500 r/min (50 HP@5500 r/min)T60TR 44.1 kW@5500 r/min (60 HP@5500 r/min)

Idle speed (in neutral): 750 50 r/min

Engine:Type:

4-stroke LDisplacement:

996.0 cm3

Bore stroke: 65.0 75.0 mm (2.56 2.95 in)

Ignition system: TCI

Spark plug (NGK): F50TR DPR6EB-9F60TR DPR6EB-9F70A LKR7ET50TR DPR6EB-9T60TR DPR6EB-9

Spark plug gap:


Specifications and requirements

15

0.8–0.9 mm (0.031–0.035 in)Control system:

Remote controlStarting system:

Electric starterStarting carburetion system:

Electronic fuel injectionValve clearance (cold engine) IN:

0.15–0.25 mm (0.0059–0.0098 in)Valve clearance (cold engine) EX:

0.25–0.35 mm (0.0098–0.0138 in)Min. cold cranking amps (CCA/SAE):

380.0 AMin. marine cranking amps (MCA/ABYC):

502.0 AMin. reserve capacity (RC/SAE):

124 minutesMaximum generator output:

F50TR 16 AF60TR 16 AF70A 15 AT50TR 16 AT60TR 16 A

Drive unit:Gear positions:

Forward-neutral-reverseGear ratio:

F50TR 1.85(24/13)F60TR 1.85(24/13)F70A 2.33(28/12)T50TR 2.33(28/12)T60TR 2.33(28/12)

Trim and tilt system: Power trim and tilt

Propeller mark: F50TR GF60TR GF70A KT50TR KT60TR K

Fuel and oil:Recommended fuel:

Regular unleaded gasolineMin. pump octane:

86Fuel tank capacity:

24 L (6.34 US gal, 5.28 Imp.gal)Recommended engine oil:

4-stroke outboard motor oilRecommended engine oil group 1*:

SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Recommended engine oil group 2*: SAE 15W-40/20W-40/20W-50 API SH/SJ/SL

Total engine oil quantity (oil pan capacity): 2.5 L (2.64 US qt, 2.20 Imp.qt)

Lubrication: Wet sump

Recommended gear oil: Hypoid gear oil SAE#90

Gear oil quantity: F50TR 0.430 L (0.455 US qt, 0.378 Imp.qt)F60TR 0.430 L (0.455 US qt, 0.378 Imp.qt)F70A 0.670 L (0.708 US qt, 0.590 Imp.qt)T50TR 0.670 L (0.708 US qt, 0.590 Imp.qt)T60TR 0.670 L (0.708 US qt, 0.590 Imp.qt)

Tightening torque for engine:Spark plug:

F50TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)F60TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)F70A 17.0 Nm (1.73 kgf-m, 12.5 ft-lb)T50TR 18.0 Nm



16

(1.84 kgf-m, 13.3 ft-lb)T60TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)

Propeller nut: F50TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)F60TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)F70A 34.0 Nm (3.47 kgf-m, 25.1 ft-lb)T50TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)T60TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)

Engine oil drain bolt: F50TR 28.0 Nm (2.86 kgf-m, 20.7 ft-lb)F60TR 28.0 Nm (2.86 kgf-m, 20.7 ft-lb)F70A 27.0 Nm (2.75 kgf-m, 19.9 ft-lb)T50TR 28.0 Nm (2.86 kgf-m, 20.7 ft-lb)T60TR 28.0 Nm (2.86 kgf-m, 20.7 ft-lb)

Engine oil filter: 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)

EMU33581

Remote control requirements

WARNINGEWM01580

● If the engine starts in gear, the boat canmove suddenly and unexpectedly, pos-sibly causing a collision or throwingpassengers overboard.

● If the engine ever starts in gear, thestart-in-gear protection device is notworking correctly and you should dis-continue using the outboard. Contactyour Yamaha dealer.

The remote control unit must be equipped

with a start-in-gear protection device(s). Thisdevice prevents the engine from starting un-less it is in neutral.EMU25694

Battery requirementsEMU25713

Specifications of BatteryUse a fully charged battery that meets thefollowing specifications. The engine cannotbe started if battery voltage is too low.

NOTICEECM01061

Do not use a battery that does not meetthe specified capacity. If a battery thatdoes not meet specifications is used, theelectric system could perform poorly orbe overloaded, causing electric systemdamage.

EMU36290

Mounting batteryMount the battery holder securely in a dry,well-ventilated, vibration-free location in theboat. WARNING! Do not put flammableitems, or loose heavy or metal objects inthe same compartment as the battery.Fire, explosion or sparks could result.[EWM01820] EMU36300

Multiple batteriesTo connect multiple batteries, such as formultiple engine configurations or for an ac-cessory battery, consult your Yamaha dealer

Minimum cold cranking amps (CCA/SAE):

380.0 AMinimum marine cranking amps (MCA/ABYC):

502.0 AMinimum reserve capacity (RC/SAE):

124 minutes



17

about battery selection and correct wiring.EMU34194

Propeller selectionNext to selecting an outboard motor, select-ing the right propeller is one of the most im-portant purchasing decisions a boater canmake. The type, size, and design of your pro-peller have a direct impact on acceleration,top speed, fuel economy, and even enginelife. Yamaha designs and manufactures pro-pellers for every Yamaha outboard motorand every application.Your outboard motor came with a Yamahapropeller selected to perform well over arange of applications, but there may be useswhere a different propeller would be moreappropriate.Your Yamaha dealer can help you select theright propeller for your boating needs. Selecta propeller that will allow the engine to reachthe middle or upper half of the operatingrange at full throttle with the maximum boat-load. Generally, select a larger pitch propel-ler for a smaller operating load and a smallerpitch propeller for a heavier load. If you carryloads that vary widely, select the propellerthat lets the engine run in the proper rangefor your maximum load but remember thatyou may need to reduce your throttle settingto stay within the recommended enginespeed range when carrying lighter loads.To check the propeller, see page 85.

EMU25770

Start-in-gear protectionYamaha outboard motors or Yamaha-ap-proved remote control units are equippedwith start-in-gear protection device(s). Thisfeature permits the engine to be started onlywhen it is in neutral. Always select neutralbefore starting the engine.

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

ZMU04606

-x1 2 3

ZMU04605

-x1 2 3



18

EMU31445

Engine oil requirements

If the recommended engine oil grades arenot available, select an alternative from thefollowing chart according to the average tem-peratures in your area.

EMU36360

Fuel requirementsEMU36781

GasolineUse a good quality gasoline that meets theminimum octane rating. If knocking or ping-ing occurs, use a different brand of gasolineor premium unleaded fuel. Yamaha re-comends that you use alcohol-free (see Gas-ohol) gasoline whenever possible.

NOTICEECM01981

● Do not use leaded gasoline. Leadedgasoline can seriously damage the en-gine.

● Avoid getting water and contaminantsin the fuel tank. Contaminated fuel cancause poor performance or enginedamage. Use only fresh gasoline thathas been stored in clean containers.

GasoholThere are two types of gasohol: gasohol con-taining ethanol (E10) and that containingmethanol. Ethanol can be used if the ethanolcontent does not exceed 10% and the fuelmeets the minimum octane ratings. E85 is afuel containing 85% ethanol and must not beused in your outboard motor. All ethanolblends containing more than 10% ethanolcan cause fuel system damage or cause en-gine starting and running problems. Yamahadoes not recommend gasohol containingmethanol because it can cause fuel systemdamage or engine performance problems.It is recommended that you install a water-separating marine fuel filter assembly (10 mi-

Recommended engine oil:YAMALUBE 4-M FC-W oil or 4-stroke motor oil with a combination of the fol-lowing SAE and API oil classifications

Engine oil type SAE:10W-30 or 10W-40

Engine oil grade API:SE, SF, SG, SH, SJ, SL

Total engine oil quantity (oil pan capaci-ty):

2.5 L (2.64 US qt, 2.20 Imp.qt)Replacement engine oil quantity (at peri-odic maintenance):

Without oil filter replacement: 1.9 L (2.01 US qt, 1.67 Imp.qt)

With oil filter replacement: 2.1 L (2.22 US qt, 1.85 Imp.qt)

Recommended gasoline:Regular unleaded gasoline with a min-imum Octane rating of 86 (Pump Oc-tane Number) = (R+M)/2



19

cron minimum) between your boat’s fuel tankand outboard motor when using ethanol.Ethanol is known to allow moisture to be ab-sorbed into boat fuel tanks and systems.Moisture in the fuel can cause corrosion ofmetallic fuel system components, startingand running complaints and require addition-al fuel system maintenance.EMU27270

Ring Free Fuel AdditiveGasoline is a precise blend of many differentsubstances, each chosen to give certaincharacteristics. Gasoline blends have beenchanging in recent years in response to con-cerns about pollution and resulting emis-sions regulations. One of the most obviouschanges has been the elimination of leadfrom most fuels.As gasoline has changed, the amount of ad-ditives such as aromatics and oxygenateshas increased. These additives are impor-tant for the engines in passenger cars, butthey can have detrimental effects in marineengines, because of increased deposits inthe combustion chamber. When enough de-posits collect, piston rings begin sticking.Performance drops and engine wear in-creases dramatically.While many additives available may reducedeposits, Yamaha recommends the use ofRing Free Fuel Additive, available fromyour Yamaha dealer. Ring Free Fuel Addi-tive has repeatedly proven its ability to cleancombustion deposits from inside the engine,notably the critical piston-ring-land area, andfuel system components. Follow product la-beling for use instructions.EMU36330

Anti-fouling paintA clean hull improves boat performance. Theboat bottom should be kept as clean of ma-

rine growth as possible. If necessary, theboat bottom can be coated with an anti-foul-ing paint approved for your area to inhibitmarine growth.Do not use anti-fouling paint which includescopper or graphite. These paints can causemore rapid engine corrosion.

EMU36341

Motor disposal requirementsNever illegally discard (dump) the motor.Yamaha recommends consulting the dealerabout discarding the motor.EMU36352

Emergency equipmentKeep the following items onboard in casethere is trouble with the outboard motor.● A tool kit with assorted screwdrivers, pli-

ers, wrenches (including metric sizes), andelectrical tape.

● Waterproof flashlight with extra batteries.● An extra engine shut-off cord (lanyard)

with clip.● Spare parts, such as an extra set of spark

plugs.Consult your Yamaha dealer for details.EMU25221

Emission control informationEMU25230

North American modelsThis engine conforms to U.S. EnvironmentalProtection Agency (EPA) regulations for ma-



20

rine SI engines. See the label affixed to yourengine for details.EMU31560

Approval label of emission control certif-icateThis label is attached to the bottom cowling.New Technology; (4-stroke) MFI

EMU25262

Manufactured date labelThis label is attached to the clamp bracket orthe swivel bracket.

EMU25273

Star labelsYour outboard motor is labeled with a Cali-fornia Air Resources Board (CARB) star la-bel. See below for a description of yourparticular label.

1. Approval label location

1

ZMU05797

ZMU06894

EMISSION CONTROL INFORMATION MFITHIS ENGINE CONFORMS TO CALIFORNIA AND U.S. EPA EXHAUSTREGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNER'SMANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.MEETS U.S. EPA EVAP STANDARDS USING CERTIFIED COMPONENTS.FAMILY:DISPLACEMENT: litersSPARK PLUG:FUEL: GASOLINE

FELs(HC+NOx / CO): / g/kW-hr MAX POWER: kWIDLE SPEED: ± rpm IN NETRALSPARK PLUG GAP (mm):VALVE LASH (mm) IN: EX:

YAMAHA MOTOR CO.,LTD.

1. Manufactured date label location

1. Star labels location

ZMU047011

ZMU05088

1



21

EMU25280

One Star—Low EmissionThe one-star label identifies engines thatmeet the Air Resources Board’s 2001 ex-haust emission standards. Engines meetingthese standards have 75% lower emissionsthan conventional carbureted two-stroke en-gines. These engines are equivalent to theU.S. EPA’s 2006 standards for marine en-gines.

EMU40340

Two Stars—Very Low EmissionThe two-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine2004 exhaust emission standards. Enginesmeeting these standards have 20% loweremissions than One Star-Low-Emission en-gines.

EMU40350

Three Stars—Ultra Low EmissionThe three-star label identifies engines that

meet the Air Resources Board’s PersonalWatercraft and Outboard marine engine2008 exhaust emission standards or theSterndrive and Inboard marine engine 2003-2008 exhaust emission standards. Enginesmeeting these standards have 65% loweremissions than One Star-Low-Emission en-gines.

EMU33861

Four Stars—Super Ultra Low EmissionThe four-star label identifies engines thatmeet the Air Resources Board’s Sterndriveand Inboard marine engine 2009 exhaustemission standards. Personal Watercraftand Outboard marine engines may alsocomply with these standards. Engines meet-ing these standards have 90% lower emis-sions than One Star-Low-Emission engines.

ZMU01702

ZMU01703

ZMU01704

ZMU05663


22

ComponentsEMU2579T

Components diagramTIP:* May not be exactly as shown; also may not be included as standard equipment on all mod-els (order from dealer).F50, F60, T50, T60

2

3

4TRIP TIME BATT

Km/hknotmph

kmmile

SPEED

YAMAHA

set mode

14

1

9

11

6

7

510

8

12 15

13

18

16 17

19 20

ZMU05090

1. Top cowling2. Water separator3. Cowling lock lever4. Drain screw5. Anode*6. Anti-cavitation plate7. Trim tab (anode)8. Propeller*9. Cooling water inlet10. Anode(s)11. Clamp bracket12. Tilt support lever13. Tiller handle*14. Flushing device15. Remote control box (side mount type)*

16. Digital tachometer*17. Digital speedometer*18. Tachometer*19. Trim meter*20. Fuel tank*


Components

23

F70A

1

3

2

4

10

9

5

6

78

10 TRIP TIME BATT

Km/hknotmph

kmmile

SPEED

YAMAHA

set mode

13 14 15

16 17 18

12

11

ZMU07113

1. Top cowling2. Water separator3. Cowling lock lever4. Drain screw5. Anti-cavitation plate6. Trim tab (anode)7. Propeller*8. Cooling water inlet9. Anode(s)10. Tilt support lever11. Power trim and tilt switch12. Flushing device13. Remote control box (side mount type)*14. Digital tachometer*15. Digital speedometer*16. Tachometer*17. Trim meter*18. Fuel tank*


Components

24

F70HA

1

3

2

171819204

10

12

16

13

9

105

6

78

15

14

11

ZMU07120

21

1. Top cowling2. Water separator3. Cowling lock lever4. Drain screw5. Anti-cavitation plate6. Trim tab (anode)7. Propeller*8. Cooling water inlet9. Anode(s)10. Tilt support lever11. Power trim and tilt switch12. Gear shift lever13. Variable trolling RPM switch14. Power trim and tilt switch15. Throttle grip16. Engine stop button/Engine shut-off switch17. Clip18. Main switch19. Steering friction adjuster20. Flushing device

21. Fuel tank*


Components

25

EMU25802

Fuel tankIf your model was equipped with a portablefuel tank, its function is as follows.

WARNINGEWM00020

The fuel tank supplied with this engine isits dedicated fuel reservoir and must notbe used as a fuel storage container. Com-mercial users should conform to relevantlicensing or approval authority regula-tions.

EMU25830

Fuel jointThis joint is used to connect the fuel line.

1

4 6

32

5

ZMU05429

1. Tachometer unit (Square type)*2. Tachometer unit (Round type)*3. Speedometer unit (Square type)*4. Speed & fuel meter unit (Square type)*5. Speed & fuel meter unit (Round type)*6. Fuel management meter (Square type)*

1. Fuel joint2. Fuel gauge3. Fuel tank cap4. Air vent screw

ZMU02284

3

1

4

2


Components

26

EMU25841

Fuel gaugeThis gauge is located on either the fuel tankcap or on the fuel joint base. It shows the ap-proximate amount of fuel remaining in thetank.EMU25850

Fuel tank capThis cap seals the fuel tank. When removed,the tank can be filled with fuel. To remove thecap, turn it counterclockwise.EMU25860

Air vent screwThis screw is on the fuel tank cap. To loosenthe screw, turn it counterclockwise.EMU26181

Remote control boxThe remote control lever actuates both theshifter and the throttle. The electrical switch-es are mounted on the remote control box.

EMU26190

Remote control leverMoving the lever forward from the neutral po-sition engages forward gear. Pulling the le-ver back from neutral engages reverse. The

engine will continue to run at idle until the le-ver is moved about 35 (a detent can be felt).Moving the lever farther opens the throttle,and the engine will begin to accelerate.

EMU26201

Neutral interlock triggerTo shift out of neutral, first pull the neutral in-terlock trigger up.

EMU26212

Neutral throttle leverTo open the throttle without shifting into ei-ther forward or reverse, put the remote con-

1. Power trim and tilt switch2. Remote control lever3. Neutral interlock trigger4. Neutral throttle lever5. Main switch6. Engine shut-off switch7. Throttle friction adjuster

1. Neutral “ ”2. Forward “ ”3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

1. Neutral interlock trigger


Components

27

trol lever in the neutral position and lift theneutral throttle lever.

TIP:The neutral throttle lever will operate onlywhen the remote control lever is in neutral.The remote control lever will operate onlywhen the neutral throttle lever is in the closedposition.EMU25912

Tiller handleTo change direction, move the tiller handle tothe left or right as necessary.

EMU25923

Gear shift leverMove the gear shift lever forward to engagethe forward gear or rearward to engage thereverse gear.

EMU25941

Throttle gripThe throttle grip is on the tiller handle. Turnthe grip counterclockwise to increase speedand clockwise to decrease speed.

EMU25961

Throttle indicatorThe fuel consumption curve on the throttleindicator shows the relative amount of fuelconsumed for each throttle position. Choosethe setting that offers the best performanceand fuel economy for the desired operation.

1. Fully open2. Fully closed

1. Forward “ ”2. Neutral “ ”3. Reverse “ ”


Components

28

EMU25976

Throttle friction adjusterA friction device provides adjustable resis-tance to movement of the throttle grip or theremote control lever, and can be set accord-ing to operator preference.To increase resistance, turn the adjusterclockwise. To decrease resistance, turn theadjuster counterclockwise. WARNING! Donot overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in anaccident. [EWM00032]

When constant speed is desired, tighten theadjuster to maintain the desired throttle set-ting.EMU25994

Engine shut-off cord (lanyard) and clipThe clip must be attached to the engine shut-off switch for the engine to run. The cordshould be attached to a secure place on theoperator’s clothing, or arm or leg. Should theoperator fall overboard or leave the helm, thecord will pull out the clip, stopping ignition tothe engine. This will prevent the boat fromrunning away under power. WARNING! At-tach the engine shut-off cord to a secureplace on your clothing, or your arm or legwhile operating. Do not attach the cord toclothing that could tear loose. Do notroute the cord where it could become en-tangled, preventing it from functioning.Avoid accidentally pulling the cord dur-ing normal operation. Loss of enginepower means the loss of most steeringcontrol. Also, without engine power, theboat could slow rapidly. This could causepeople and objects in the boat to bethrown forward. [EWM00122]

1. Throttle indicator


Components

29

EMU26002

Engine stop buttonThe engine stop button stops the enginewhen the button is pushed.

EMU26091

Main switchThe main switch controls the ignition system;its operation is described below.● “ ” (off)With the main switch in the “ ” (off) posi-tion, the electrical circuits are off, and the keycan be removed.● “ ” (on)With the main switch in the “ ” (on) posi-tion, the electrical circuits are on, and the keycannot be removed.● “ ” (start)With the main switch in the “ ” (start) po-sition, the starter motor turns to start the en-gine. When the key is released, it returnsautomatically to the “ ” (on) position.

EMU31432

Steering friction adjusterA friction device provides adjustable resis-tance to the steering mechanism, and can be

1. Cord2. Clip3. Engine shut-off switch



Components

30

set according to operator preference. An ad-juster lever is located on the bottom of thetiller handle bracket.To increase resistance, turn the lever to theport side “A”.To decrease resistance, turn the lever to thestarboard side “B”.

WARNINGEWM00040

Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in anaccident.

If the resistance does not increase evenwhen the lever is turned to the port side “A”,make sure that the nut is tightened to thespecified torque.

TIP:● Steering movement is blocked when the

adjuster lever is set to the “A” position.● Check the tiller handle for smooth move-

ment when the lever is turned to the star-board side “B”.

● Do not apply lubricants such as grease tothe friction areas of the steering friction ad-juster.

EMU26143

Power trim and tilt switch on remote control or tiller handleThe power trim and tilt system adjusts theoutboard motor angle in relation to the tran-som. Pressing the switch “ ” (up) trims theoutboard motor up, and then tilts it up. Press-ing the switch “ ” (down) tilts the outboardmotor down and trims it down. When theswitch is released, the outboard motor willstop in its current position.For instructions on using the power trim andtilt switch, see pages 64 and 66.

1. Nut

ZMU02810

B

A

Nut tightening torque:3.8 Nm (0.38 kgf-m, 2.8 ft-lb)


Components

31

EMU26154

Power trim and tilt switch on bottom cowlingThe power trim and tilt switch is located onthe side of the bottom cowling. Pushing theswitch “ ” (up) trims the outboard motor up,and then tilts it up. Pushing the switch “ ”(down) tilts the outboard motor down andtrims it down. When the switch is released,the outboard motor will stop in its current po-sition.For instructions on using the power trim andtilt switch, see page 66.

WARNINGEWM01031

Use the power trim and tilt switch locatedon the bottom cowling only when the boatis at a complete stop with the engine off.Attempting to use this switch while theboat is moving could increase the risk offalling overboard and could distract theoperator, increasing the risk of collisionwith another boat or an obstacle.

EMU30901

Variable trolling RPM switchesThe trolling speed can be adjusted when theoutboard motor is trolling. Press the “ ”switch to increase the trolling speed andpress the “ ” switch to decrease the trollingspeed.

TIP:● The trolling speed changes approximately

50 r/min each time a switch is pressed.● If the trolling speed has been adjusted, the

engine returns to the normal trolling speedwhen the engine is stopped and restartedor when the engine speed exceeds ap-proximately 3000 r/min.

● For instructions on using the variable troll-ing RPM switches, see page 63.

1. Power trim and tilt switch

1. Variable trolling RPM switch

UP

DNZMU03634

1


Components

32

EMU26244

Trim tab with anode

WARNINGEWM00840

An improperly adjusted trim tab couldcause difficult steering. Always test runafter the trim tab has been installed or re-placed to be sure steering is correct. Besure you have tightened the bolt after ad-justing the trim tab.

The trim tab should be adjusted so that thesteering control can be turned to either theright or left by applying the same amount offorce.If the boat tends to veer to the left (port side),turn the trim tab rear end to the port side “A”in the figure. If the boat tends to veer to theright (starboard side), turn the trim tab end tothe starboard side “B” in the figure.

NOTICEECM00840

The trim tab also serves as an anode toprotect the engine from electrochemicalcorrosion. Never paint the trim tab as itwill become ineffective as an anode.

EMU26341

Tilt support lever for power trim and tilt modelTo keep the outboard motor in the tilted upposition, lock the tilt support lever to theclamp bracket.

NOTICEECM00660

Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot be trail-ered in the normal running position, use

1. Trim tab2. Bolt3. Cap

1

2

3

ZMU02525

A

B

1. Trim tab2. Bolt

Bolt tightening torque:F50, F60 18.0 Nm (1.8 kgf-m, 13 ft-lb)F70, T50, T60 36.0 Nm (3.6 kgf-m, 26 ft-lb)

A

B

ZMU03097

1

2

ZMU03595


Components

33

an additional support device to secure itin the tilt position.

EMU26373

Cowling lock lever(s) (turn type)To remove the engine top cowling, turn thecowling lock lever(s) and lift off the cowling.When installing the cowling, check to be sureit fits properly in the rubber seal. Then lockthe cowling again by returning the cowlinglock lever(s) to the lock position.

EMU26462

Flushing deviceThis device is used to clean the cooling wa-ter passages of the motor using a gardenhose and tap water.

TIP:For details on usage, see page 73.EMU33463

Fuel filter/Water separatorThis engine has a combination fuel filter/wa-ter separator and associated alert system. Ifwater separated from the fuel exceeds aspecific volume, the alert device of Com-mand Link Tachometer will activate.

1. Cowling lock lever(s)

1. Flushing device

1

ZMU05093

1

ZMU05095

1. Flushing device

1ZMU07078

ZMU05474

ZMU07079


Components

34

Activation of alert device● The water separator-alert indicator of

Command Link Tachometer will blink.● The buzzer will sound intermittently only

when the gear shift is in neutral.● If the alert system has activated, stop the

engine and consult a Yamaha dealer im-mediately.

TIP:Adding an in-line 10-micron fuel filter hasbeen show to greatly reduce the chance offuel contamination problems. Consult yourdealer for information about Yamaha 10-mi-cron fuel filters if your boat does not haveone.


35

Instruments and indicatorsEMU26493

Digital tachometerThe tachometer shows the engine speedand has the following functions.All segments of the display will light momen-tarily after the main switch is turned on andwill return to normal thereafter.

TIP:The water separator and engine trouble-alertindicators only operate when the engine isequipped with the appropriate functions.EMU36050

TachometerThe tachometer displays engine speed inhundreds of revolutions per minute (r/min).For example, if the tachometer display reads“22” then the engine speed is 2200 r/min.EMU26621

Trim meterThis meter shows the trim angle of your out-board motor.● Memorize the trim angles that work best

for your boat under different conditions.Adjust the trim angle to the desired using

the power trim and tilt switch.● If the trim angle of your motor exceeds the

trim operating range, the top segment onthe trim meter display will blink.

EMU26651

Hour meterThis meter shows the number of hours theengine has been run. It can be set to showthe total number of hours or the number ofhours for the current trip. The display canalso be turned on and off.

To change the display format, press the“ ” (mode) button. The display can showtotal hours or trip hours, or turn off.To reset the trip hours, simultaneously pressthe “ ” (set) and “ ” (mode) buttons formore than 1 second while the trip hours aredisplayed. This resets the trip counter to 0(zero).The total number of hours the engine hasbeen run cannot be reset.

1. Tachometer2. Trim meter3. Hour meter4. Low oil pressure-alert indicator5. Overheat-alert indicator6. Set button7. Mode button

1

5

2

4

3

6 7 ZMU03601

ZMU01740

ZMU01741


Instruments and indicators

36

EMU26524

Low oil pressure-alert indicatorIf oil pressure drops too low, the alert indica-tor will start to blink. For further information,see page 47.

NOTICEECM00022

● Do not continue to run the engine if thelow oil pressure-alert indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.

● The low oil pressure-alert indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-mation, see page 53.

EMU26583

Overheat-alert indicatorIf the engine temperature rises too high, thealert indicator will start to blink. For further in-formation on reading the indicator, see page47.

NOTICEECM00052

Do not continue to run the engine if theoverheat-alert indicator is on. Serious en-gine damage will occur.

EMU26602

Digital speedometerThis gauge shows the boat speed and otherinformation.

All segments of the display will light momen-tarily after the main switch is turned on andwill return to normal thereafter.EMU36061

SpeedometerThe speedometer displays km/h, mph, orknots, according to operator preference. Se-lect the desired units of measurement by set-ting the selector switch on the back of thegauge. See the illustration for settings.

1. Low oil pressure-alert indicator

ZMU017361

1. Overheat-alert indicator

1. Speedometer2. Fuel gauge3. Trip meter/clock/voltmeter4. Alert indicator(s)

ZMU01737

1



37

EMU26713

Fuel gaugeEight segments indicate the fuel level. Whenall segments are showing, the fuel tank isfull.

The fuel level reading can be inaccurate dueto the position of the sensor in the fuel tankand the attitude of the boat in the water. Op-eration with bow-up trim or continuous turn-ing can give false readings.Do not adjust the selector switch for fuel sen-sor. Incorrectly setting the selector switch onthe gauge will give false readings. Consultyour Yamaha dealer on how to correctly setthe selector switch. NOTICE: Running outof fuel can damage the engine. [ECM01770]

EMU36071

Trip meter / Clock / VoltmeterThe display shows either the trip meter, theclock, or the voltmeter.To change the display, press the “ ”(mode) button repeatedly until the indicatoron the face of the gauge points to “ ” (tripmeter), “ ” (clock), or “ ” (voltmeter).EMU26691

Trip meterThis gauge displays the distance the boathas traveled since the gauge was last reset.The trip distance is shown in kilometers ormiles depending upon the unit of measure-ment selected for the speedometer.To reset the trip meter to zero, press the “ ”(set) and “ ” (mode) buttons at the sametime.The trip distance is kept in memory by bat-tery power. The stored data will be lost if thebattery is disconnected.

EMU26701

ClockTo set the clock:1. Be sure the gauge is in the “ ” (time)

mode.2. Press the “ ” (set) button; the hour dis-

play will begin blinking.3. Press the “ ” (mode) button until the

desired hour is displayed.4. Press the “ ” (set) button again, the

minute display will begin blinking.

1. Cap2. Selector switch (for speed unit)3. Selector switch (for fuel sensor)

ZMU01745



38

5. Press the “ ” (mode) button until thedesired minute is displayed.

6. Press the “ ” (set) button again to startthe clock.

The clock operates on battery power. Dis-connecting the battery will stop the clock.Reset the clock after connecting the battery.EMU36080

VoltmeterThe voltmeter displays the charge of the bat-tery in volts(V).EMU26721

Fuel level-alert indicatorIf the fuel level decreases to one segment,the fuel level alert segment will blink.Do not continue to operate the engine withfull throttle if an alert device has activated.Get back to the port within trolling enginespeed. NOTICE: Running out of fuel candamage the engine. [ECM01770]

EMU26732

Low battery voltage-alert indicatorIf battery voltage drops, the display will auto-matically turn on and blink.Get back to the port soon if an alert devicehas activated. For charging the battery, con-sult your Yamaha dealer.

EMU26471

Analog tachometerThis gauge shows the engine speed and hasthe following functions.

EMU26506

Low oil pressure-alert indicatorIf oil pressure drops too low, this indicator willflash. For further information, see page 47.

1. Fuel level-alert segment

1. Low battery indicator

1. Tachometer2. Alert indicator(s)

ZMU04578

1

2



39

NOTICEECM00022

● Do not continue to run the engine if thelow oil pressure-alert indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.

● The low oil pressure-alert indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-mation, see page 53.

EMU26574

Overheat-alert indicatorIf the engine temperature rises too high, thisindicator will flash. For further information onreading the indicator, see page 47.

NOTICEECM00052

Do not continue to run the engine if theoverheat-alert indicator is on. Serious en-gine damage will occur.

EMU26611

Analog trim meterThis gauge shows the trim angle of your out-board motor.

Memorize the trim angles that work best foryour boat under different conditions. Adjustthe trim angle to the desired setting with thepower trim and tilt switch.EMU31642

Command link multifunction meters

Command link multifunction meters have 6kinds of meter units; tachometer unit (squareor round types), speedometer unit (squaretype), speed & fuel meter unit (square orround types), and fuel management meter(square type). The indicator system is slight-ly different between the round and squaretypes. Check the model and type of your unit

1. Low oil pressure-alert indicator

ZMU06156

1

1. Overheat-alert indicator

ZMU06157

1

ZMU04581



40

carefully. This manual describes mainly thealert indicators. For more details on settingmeters or changing indicator systems, seethe attached operation manual.EMU36103

Command link multifunction tachometers

The tachometer shows the engine revolu-tions per minute. It has functions of trimmeter, adjusting trolling speed, cooling wa-ter/engine temperature display, battery volt-age display, total hour/trip hour display, oilpressure display, water detection alert, en-gine trouble alert, and periodic maintenancenotification. If the cooling water pressuresensor is installed, the unit can also show thecooling water pressure display. However,even if the cooling water pressure sensor isnot installed, the cooling water pressure dis-play can be shown by connecting an optionalsensor to the unit. For the optional sensor,consult your Yamaha dealer. The tachome-ter unit is available in round or square types.Check your tachometer unit type.

1. Set button2. Mode button

21

ZMU05415

1. Tachometer2. Trim meter3. Multifunction display4. Cooling water pressure5. Cooling water/engine temperature6. Water detection-alert indicator7. Battery voltage8. Oil pressure (4-stroke models)


2

3

1

4

5

6

7

8 ZMU05416

21

ZMU05417



41

EMU36190

Start-up checksPlace the remote control lever / gear shift le-ver in neutral and turn the main switch to“ ” (on). After all the displays come on andthe total hour display comes on, the gaugewill change to normal operation. If the buzzersounds and the water separator-alert indica-tor blinks, consult your Yamaha dealer im-mediately.

TIP:To stop the buzzer, press the “ ” (set) or“ ” (mode) button.EMU37690

Adjusting trolling speedYou can adjust the trolling speed randomlyby increasing or decreasing it approximately50 r/min. When in the trolling speed settingmode, the display switches to the normal dis-play when the engine speed is increased(within 3000 r/min) using the throttle. Whenthe throttle is closed, the display returns to

the trolling speed setting mode. For details,see the attached operation manual.

TIP:● Trolling is affected by currents and other

operating conditions and may differ fromthe actual engine speed.

● The default engine idle speed is reset au-tomatically when the display is switched tothe normal display. The default engine idlespeed is also reset automatically when theengine is turned off or when the enginespeed exceeds 3000 r/min.

● When warming up a cold engine, the troll-ing speed cannot be decreased below thespecified engine idle speed.

EMU36130

Low oil pressure-alertIf the engine oil pressure drops too low, thelow oil pressure-alert indicator will start toblink, and the engine speed will automatical-ly decrease to about 2000 r/min.

1. Tachometer2. Trim meter3. Multifunction display4. Water detection-alert indicator5. Engine trouble alert/maintenance indicator6. Cooling water pressure7. Oil pressure (4-stroke models)8. Cooling water/engine temperature9. Battery voltage

1 4 5 2

3

6 87 9 ZMU05418

ZMU05931

ZMU06309



42

Stop the engine immediately if the buzzersounds and the low oil pressure-alert indica-tor blinks. Check the engine oil quantity andreplenish oil if necessary. If the alert devicehas activated while the appropriate engineoil quantity is maintained, consult yourYamaha dealer.

NOTICEECM01601

Do not continue to run the engine if thelow oil pressure alert device has activat-ed. Serious engine damage will occur.

EMU36221

Overheat alertIf the engine temperature rises too high whilecruising, the overheat-alert indicator will startto blink. The engine speed will automaticallydecrease to about 2000 r/min.

Stop the engine immediately if the buzzersounds and the overheat alert device has ac-tivated. Check the cooling water inlet forclogging.

NOTICEECM01592

● Do not continue to run the engine if theoverheat-alert indicator blinks. Seriousengine damage will occur.

● Do not continue to operate the engine ifa alert device has activated. Consultyour Yamaha dealer if the problem can-not be located and corrected.

EMU36150

Water separator alertThis indicator will blink if water has accumu-lated in the water separator (fuel filter) whilecruising. In such an event, stop the engineimmediately and see page 95 of this manualto drain the water from the fuel filter. Getback to the port soon and consult a Yamaha

ZMU05430

ZMU05431

ZMU05421

ZMU05422



43

dealer immediately.

NOTICEECM00910

Gasoline mixed with water could causedamage to the engine.

EMU36160

Engine trouble alertThis indicator will blink if the engine malfunc-tions while cruising. Get back to the portsoon and consult a Yamaha dealer immedi-ately.

NOTICEECM00920

In such an event, the engine will not oper-ate properly. Consult a Yamaha dealer im-mediately.

EMU36170

Low battery voltage-alertIf the battery voltage drops, the low batteryvoltage-alert indicator and the battery volt-age value will start to blink. Get back to theport soon if the low battery voltage-alert de-vice has activated. For charging the battery,consult your Yamaha dealer.

ZMU05423

ZMU05424

ZMU05425

ZMU05426

ZMU05427



44

EMU31613

Command link multifunction speed & fuel meters

The speed & fuel meter unit shows the boatspeed and has the functions of fuel meter, to-tal fuel consumption display, fuel economydisplay, fuel flow display, and system voltagedisplay. The chosen display is selected byusing the “ ” (set) and “ ” (mode) but-tons as described in this section. If the speedsensor is installed, the unit can also show thetrip display. However, even if the speed sen-sor is not installed, the trip display can beshown by connecting an optional sensor tothe unit. In addition, if optional sensors areconnected to the unit, water surface temper-ature display, depth display, and clock willalso be available. For the optional sensors,consult your Yamaha dealer.The speed & fuel meter unit is available inround or square types. Check your speed &fuel meter unit type for operation information.After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-ation.For more information, see the operationmanual originally supplied with the meter.

ZMU05428


1. Speedometer2. Fuel meter3. Multifunction display


21

ZMU05432

1

23

ZMU05433

21

ZMU05434



45

EMU31622

Command link multifunction speedometers

The speedometer unit shows the boat speedand has functions of fuel meter and systemvoltage display. The chosen display is se-lected by using the “ ” (set) and “ ”(mode) buttons as described in this section.In addition, the speedometer can show thedesired unit of measurement such as km/h,mph, or knots. If the speed sensor is in-stalled, the unit can also show the trip dis-play. However, even if the speed sensor isnot installed, the trip display can be shownby connecting an optional sensor to the unit.In addition, if optional sensors are connectedto the unit, water surface temperature dis-play, depth display, and clock will also beavailable. For the optional sensors, consultyour Yamaha dealer.After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-ation.For more information, see the operationmanual originally supplied with the meter.

EMU31632

Command link multifunction fuel management meters

The fuel management meter has the func-tions of fuel flow meter, total consumptiondisplay, fuel economy display, and remainingfuel display. The chosen display is selectedby using the “ ” (set) and “ ” (mode)buttons as described in this section. Formore information, see the operation manualoriginally supplied with the meter.After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-


1 2

3 ZMU05435



21

ZMU05436

1

23

ZMU05437



46

ation.For more information, see the operationmanual originally supplied with the meter.


1. Fuel flow meter2. Multifunction display

21

ZMU05438

1

2

ZMU05439


47

Engine control systemEMU26803

Alert system

NOTICEECM00091

Do not continue to operate the engine if aalert device has activated. Consult yourYamaha dealer if the problem cannot belocated and corrected.

EMU2681C

Overheat alertThis engine has an overheat-alert device. Ifthe engine temperature rises too high, thealert device will activate.● The engine speed will automatically de-

crease to about 2000 r/min.● The overheat-alert indicator will light or

blink.

● The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).

If the alert system has activated, stop the en-gine and check the cooling water inlets:● Check trim angle to be sure that the cool-

ing water inlet is submerged.● Check the cooling water inlet for clogging.

EMU3016B

Low oil pressure alertIf the oil pressure drops too low, the alert de-vice will activate.● The engine speed will automatically de-

crease to about 2000 r/min. If equipped

ZMU05028

ZMU07103

ZMU03604


Engine control system

48

with a low oil pressure-alert indicator, it willlight or blink.

● The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).

If the alert system has activated, stop the en-gine as soon as it is safe to do so. Check theoil level and add oil as needed. If the oil levelis correct and the alert device does notswitch off, consult your Yamaha dealer.

ZMU04994

ZMU07104


49

InstallationEMU26902

InstallationThe information presented in this section isintended as reference only. It is not possibleto provide complete instructions for everypossible boat and motor combination. Propermounting depends in part on experience andthe specific boat and motor combination.

WARNINGEWM01590

● Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepowerthan the maximum rating on the capac-ity plate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer.

● Improper mounting of the outboard mo-tor could result in hazardous condi-tions such as poor handling, loss ofcontrol, or fire hazards. For permanent-ly mounted models, your dealer or oth-er person experienced in proper riggingshould mount the motor.

EMU33470

Mounting the outboard motorThe outboard motor should be mounted sothat the boat is well balanced. Otherwise, theboat could be hard to steer. For single-en-gine boats, mount the outboard motor on thecenterline (keel line) of the boat.

EMU26933

Mounting height (boat bottom)The mounting height of your outboard motoraffects its efficiency and reliability. If it ismounted too high, propeller ventilation mayoccur, which will reduce propulsion due toexcessive propeller slip, and the water in-takes for the cooling system may not get ad-equate water supply, which can causeengine overheating. If the engine is mountedtoo low, water resistance (drag) will increase,thereby reducing engine efficiency and per-formance.Most commonly, outboard motor should bemounted so that the anti-cavitation plate is inalignment with the bottom of the boat. Theoptimum mounting height of the outboardmotor is affected by the boat/motor combina-tion and the desired use. Test runs at differ-ent heights can help determine the optimummounting height. Consult your Yamaha deal-er or boat manufacturer for further informa-tion on determining the proper mountingheight.

1. Center line (keel line)

ZMU017601


Installation

50

NOTICEECM01634

● Make sure that the idle hole is highenough to prevent water from enteringthe engine even if the boat is stationarywith the maximum load.

● Incorrect engine height or obstructionsto the smooth flow of water (such as thedesign or condition of the boat, or ac-cessories, such as transom ladders ordepth finder transducers) can createairborne water spray while the boat iscruising. If the outboard motor is oper-ated continuously in the presence ofairborne water spray, enough watercould enter the engine through the airintake opening in the top cowling tocause severe engine damage. Removethe cause of the airborne water spray.

ZMU01762


51

OperationEMU36381

First-time operationEMU36391

Fill engine oilThe engine is shipped from the factory with-out engine oil. If your dealer did not fill the oil,you must fill it before starting the engine.NOTICE: Check that the engine is filledwith oil before first-time operation toavoid severe engine damage. [ECM01781] The engine is shipped with the followingsticker, which should be removed after en-gine oil is filled for the first time. For more in-formation on checking the engine oil level,see page 53.

EMU30174

Breaking in engineYour new engine requires a period of break-in to allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer enginelife. NOTICE: Failure to follow the break-inprocedure could result in reduced enginelife or even severe engine damage. [ECM00801] EMU27085

Procedure for 4-stroke modelsYour new engine requires a period of 10hours break-in to allow mating surfaces ofmoving parts to wear in evenly.

TIP:Run the engine in the water, under load (ingear with a propeller installed) as follows.

For 10 hours for breaking in engine avoid ex-tended idling, rough water and crowded ar-eas.1. For the first hour of operation:

Run the engine at varying speeds up to2000 r/min or approximately half throttle.

2. For the second hour of operation:Increase engine speed as much as nec-essary to put the boat on plane (butavoid full-throttle operation), then backoff on the throttle while keeping the boatat a planing speed.

3. Remaining 8 hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.

4. After the first 10 hours:Operate the engine normally.

EMU36400

Getting to know your boatDifferent boats handle differently. Operatecautiously while you learn how your boathandles under different conditions and withdifferent trim angles (see page 64).EMU36413

Checks before starting engine

WARNINGEWM01921

If any item in “Checks before starting en-gine” is not working properly, have it in-spected and repaired before operatingthe outboard motor. Otherwise, an acci-dent could occur.

NOTICEECM00120

Do not start the engine out of water. Over-heating and serious engine damage canoccur.

EMU36421

Fuel levelBe sure you have plenty of fuel for your trip.

ZMU01710


Operation

52

A good rule is to use 1/3 of your fuel to get tothe destination, 1/3 to return, and to keep 1/3as an emergency reserve. With the boat lev-el on a trailer or in the water, turn the key to“ ” (on) and check the fuel level. For fuelfilling instructions, see page 55.EMU36571

Remove the top cowlingFor the following checks, remove the topcowling from the bottom cowling. To removethe top cowling, release the cowling lock le-ver and lift off the top cowling.

EMU36442

Fuel system

WARNINGEWM00060

Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other sourc-es of ignition.

WARNINGEWM00910

Leaking fuel can result in fire or explo-sion.● Check for fuel leakage regularly.● If any fuel leakage is found, the fuel

system must be repaired by a qualifiedmechanic. Improper repairs can makethe outboard unsafe to operate.

EMU36451

Check for fuel leaks● Check for fuel leaks or gasoline fumes in

the boat.● Check for fuel leakage from the fuel sys-

tem.● Check the fuel tank and fuel lines for

cracks, swellings, or other damages.EMU36471

Check the fuel filterCheck that the fuel filter is clean and free ofwater. If enough water to raise the float ringis found in the fuel, or if a significant amountof debris is found, the fuel tank should bechecked and cleaned by a Yamaha dealer.

EMU36902

ControlsTiller handle models:● Move the tiller handle fully to the left and

right to make sure operation is smooth.● Turn the throttle grip from the fully closed

to the fully open position. Make sure that it

ZMU06085

ZMU05474

ZMU07079


Operation

53

turns smoothly and that it completely re-turns to the fully closed position.

● Look for loose or damaged connections ofthe throttle and shift cables.

Remote control models:● Turn the steering wheel full-right and full-

left. Make sure operation is smooth andunrestricted throughout the whole rangewith no binding or excessive free play.

● Operate the throttle levers several times tomake sure there is no hesitation in theirtravel. Operation should be smooth overthe complete range of motion, and each le-ver should return completely to the idle po-sition.

● Look for loose or damaged connections ofthe throttle and shift cables.

EMU36483

Engine shut-off cord (lanyard)Inspect the engine shut-off cord and clip fordamage, such as cuts, breaks, and wear.

EMU37052

Engine oil1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the motoris not level, the oil level indicated onthe dipstick may not be accurate.[ECM01790]

2. Remove oil dipstick and wipe it clean.3. Insert the dipstick and remove it again.

Be sure to completely insert the dipstickinto the dipstick guide, otherwise the oillevel measurement will be incorrect.

4. Check the oil level using the dipstick tobe sure the level falls between the upper

ZMU07105




Operation

54

level mark and lower level mark. Consultyour Yamaha dealer if the oil level is outof specified level or if it appears milky ordirty.

EMU27153

Engine● Check the engine and engine mounting.● Look for loose or damaged fasteners.● Check the propeller for damage.● Check for engine oil leaks.EMU36492

Flushing deviceCheck that the flushing device’s garden hoseconnector is securely screwed on to the fit-ting on the bottom cowling. NOTICE: If thegarden hose connector is not properly

connected, cooling water can leak outand the engine can overheat during oper-ation. [ECM01801]

EMU36954

Install top cowling1. Be sure that the cowling lock lever is re-

leased.2. Be sure that the rubber seal is seated all

the way around the top cowling.3. Place the top cowling on the bottom

cowling.4. Check to be sure the rubber seal is seat-

ed correctly between the top cowlingand the bottom cowling.

5. Move the lever to lock the cowling as

1. Oil dipstick

1. Lower level mark2. Oil dipstick3. Upper level mark

1

ZMU05089

1 3 2

ZMU05091

1. Fitting2. Flushing device

1. Fitting2. Flushing device

21

ZMU06056

1 2ZMU07080


Operation

55

shown. NOTICE: If the top cowling isnot installed correctly, water sprayunder the top cowling can damagethe engine, or the top cowling canblow off at high speeds. [ECM01991]

After installing, check the fitting of the topcowling by pushing it with both hands. If thetop cowling is loose, have it repaired by yourYamaha dealer.

EMU34581

Power trim and tilt system

WARNINGEWM01930

● Never get under the lower unit while itis tilted, even when the tilt support leveris locked. Severe injury could occur ifthe outboard motor accidentally falls.

● Body parts can be crushed between themotor and the clamp bracket when themotor is trimmed or tilted.

● Be sure no one is near the outboard

motor before performing this check.

1. Check the power trim and tilt unit for anysign of oil leaks.

2. Operate each of the power trim and tiltswitches to check that all switches work.

3. Tilt the outboard motor up and checkthat the trim and tilt rod is pushed outcompletely.

4. Check that the trim and tilt rod is free ofcorrosion or other flaws.

5. Tilt the outboard motor down. Check thatthe trim and tilt rod operates smoothly.

EMU36582

BatteryCheck that the battery is in good condition,and fully charged. Check that the batteryconnections are clean, secure and coveredby insulating covers. The electrical contactsof the battery and cables must be clean andproperly connected or the battery will notstart the engine.Refer to the battery manufacturer’s instruc-tions for checks for your particular battery.EMU27438

Filling fuel

WARNINGEWM01830

● Gasoline and its vapors are highly flam-mable and explosive. Always refuel ac-

ZMU06110

1. Trim and tilt rod

1

ZMU03662


Operation

56

cording to this procedure to reduce therisk of fire and explosion.

● Gasoline is poisonous and can causeinjury or death. Handle gasoline withcare. Never siphon gasoline by mouth.If you should swallow some gasoline orinhale a lot of gasoline vapor, or getsome gasoline in your eyes, see yourdoctor immediately. If gasoline spillson your skin, wash with soap and wa-ter. If gasoline spills on your clothing,change your clothes.

1. Be sure the engine is stopped.2. Disconnect the fuel line from the fuel

tank and tighten the air vent screw onthe fuel tank cap.

3. Remove the portable tank from the boat.4. Be sure you are in a well-ventilated out-

door area, either securely moored ortrailered.

5. Do not smoke and keep away fromsparks, flames, static electric discharge,or other sources of ignition.

6. If you use a portable container to storeand dispense fuel, use only an approvedGASOLINE container.

7. Touch the fuel nozzle to the filler open-ing or funnel to help prevent electrostaticsparks.

8. Fill the fuel tank, but do not overfill.WARNING! Do not overfill. Otherwisefuel can expand and overflow if thetemperature increases. [EWM02610]

9. Tighten the filler cap securely.10. Wipe up any spilled gasoline immediate-

ly with dry rags. Dispose rags properlyaccording to local laws or regulations.

EMU27452

Operating engine

WARNINGEWM00420

● Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in thewater near you.

● When the air vent screw is loosened,gasoline vapor will be released. Gaso-

ZMU06598

ZMU02301

Fuel tank capacity:24 L (6.34 US gal, 5.28 Imp.gal)

ZMU02834


Operation

57

line is highly flammable, and its vaporsare flammable and explosive. Refrainfrom smoking, and keep away fromopen flames and sparks while loosen-ing the air vent screw.

● This product emits exhaust gaseswhich contain carbon monoxide, a col-orless, odorless gas which could causebrain damage or death when inhaled.Symptoms include nausea, dizziness,and drowsiness. Keep cockpit and cab-in areas well ventilated. Avoid blockingexhaust outlets.

EMU27468

Sending fuel (portable tank)1. If there is an air vent screw on the fuel

tank cap, loosen it 2 or 3 turns.

2. If there is a fuel joint on the motor, alignthe fuel joint on the fuel line with the fueljoint on the motor and firmly connect thefuel line to the joint while pinching thejoint. Then firmly connect the other endof the fuel line to the joint on the fueltank.

TIP:Wipe up any spilled gasoline immediatelywith dry rags. Dispose rags properly accord-ing to local laws or regulations.3. Squeeze the primer pump, with the ar-

row pointing up, until you feel it becomefirm. During engine operation place thetank horizontally, otherwise fuel cannotbe drawn from the fuel tank.

ZMU02295

ZMU03679

ZMU07081

ZMU02024


Operation

58

EMU27493

Starting engine

WARNINGEWM01600

Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in the wa-ter near you.

EMU27595

Electric start / prime start models

WARNINGEWM01840

● Failure to attached engine shut-off cordcould result in a runaway boat if opera-tor is ejected. Attach the engine shut-off cord to a secure place on your cloth-ing, or your arm or leg while operating.Do not attach the cord to clothing thatcould tear loose. Do not route the cordwhere it could become entangled, pre-venting it from functioning.

● Avoid accidentally pulling the cord dur-ing normal operation. Loss of enginepower means the loss of most steeringcontrol. Also, without engine power,the boat could slow rapidly. This couldcause people and objects in the boat tobe thrown forward.

1. Place the gear shift lever in neutral.

TIP:The start-in-gear protection device preventsthe engine from starting except when in neu-tral.2. Attach the engine shut-off cord to a se-

cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.

3. Place the throttle grip in the “ ”(start) position. After the engine starts,return the throttle to the fully closed po-sition.

1. Arrow


Operation

59

4. Turn the main switch to “ ” (start),and hold it for a maximum of 5 seconds.

5. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on). NOTICE: Never turnthe main switch to “ ” (start)while the engine is running. Do notkeep the starter motor turning formore than 5 seconds. If the startermotor is turned continuously formore than 5 seconds, the battery willbe quickly discharged, thus making itimpossible to start the engine. Thestarter can also be damaged. If theengine will not start after 5 secondsof cranking, return the main switch to“ ” (on), wait 10 seconds, thencrank the engine again. [ECM00192]

TIP:● When the engine is cold, it needs to be

warmed up. For further information, see

page 61.● If the engine is warm and fails to start,

open the throttle slightly and try to start theengine again. If the engine still fails tostart, see page 92.

EMU27664

Electric start and remote control models

WARNINGEWM01840

● Failure to attached engine shut-off cordcould result in a runaway boat if opera-tor is ejected. Attach the engine shut-off cord to a secure place on your cloth-ing, or your arm or leg while operating.Do not attach the cord to clothing thatcould tear loose. Do not route the cordwhere it could become entangled, pre-venting it from functioning.


1. Place the remote control lever in neutral.

TIP:The start-in-gear protection device preventsthe engine from starting except when in neu-tral.2. Attach the engine shut-off cord to a se-


Operation

60

cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.

3. Turn the main switch to “ ” (on).4. Turn the main switch to “ ” (start),

and hold it for a maximum of 5 seconds.

5. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on). NOTICE: Never turnthe main switch to “ ” (start)while the engine is running. Do notkeep the starter motor turning formore than 5 seconds. If the startermotor is turned continuously formore than 5 seconds, the battery willbe quickly discharged, thus making itimpossible to start the engine. Thestarter can also be damaged. If theengine will not start after 5 secondsof cranking, return the main switch to

“ ” (on), wait 10 seconds, thencrank the engine again. [ECM00192]

TIP:● When the engine is cold, it needs to be

warmed up. For further information, seepage 61.

● If the engine is warm and fails to start,open the throttle slightly and try to start theengine again. If the engine still fails tostart, see page 92.

EMU36510

Checks after starting engineEMU36522

Cooling waterCheck for a steady flow of water from thecooling water pilot hole. A continuous flow ofwater from the pilot hole indicates that thewater pump is pumping water through thecooling water passages. If the cooling waterpassages are frozen, it may take a while forwater to start flowing out of the pilot hole.

NOTICEECM01810

If water is not flowing out of the pilot holeat all times while the engine is running,overheating and serious damage couldoccur. Stop the engine and check wheth-er the cooling water inlet on the lowercase or the cooling water pilot hole isblocked. Consult your Yamaha dealer ifthe problem cannot be located and cor-rected.


Operation

61

EMU27670

Warming up engineEMU27716

Manual start and electric start models1. After starting the engine, allow it to idle

for 3 minutes to warm up. Failure to doso will shorten engine life.

2. Be sure the low oil pressure-alert indica-tor goes off after starting the engine.NOTICE: If the low oil pressure-alertindicator blinks after the enginestarts, stop the engine. Otherwise,serious engine damage could occur.Check the oil level and add engine oilif necessary. Consult your Yamahadealer if the cause for the low oilpressure alert cannot be found.[ECM01831]

EMU36531

Checks after engine warm upEMU36541

ShiftingWhile the boat is tightly moored, and withoutapplying throttle, confirm that the engineshifts smoothly into forward and reverse, andback to neutral.EMU36980

Stop switches● Turn the main switch to “ ”, or press the

engine stop button and make sure the en-gine stops.

● Confirm that removing the clip from the en-gine shut-off switch stops the engine.

● Confirm that the engine cannot be startedwith the clip removed from the engineshut-off switch.

EMU33492

Shifting

WARNINGEWM00180

Before shifting, make sure there are noswimmers or obstacles in the water nearyou.

NOTICEECM01610

Warm up the engine before shifting intogear. Until the engine is warm, the idlespeed may be higher than normal. Highidle speed can prevent you from shiftingback to neutral. If this occurs, stop theengine, shift to neutral, then restart theengine and allow it to warm up.

To shift out of neutral1. Pull the neutral interlock trigger up (if

equipped).

2. Move the remote control lever / gearshift lever firmly and crisply forward (forforward gear) or backward (for reversegear) [about 35 (a detent can felt) for re-mote control models].

ZMU05092

1. Neutral interlock trigger


Operation

62

To shift from in gear (forward/reverse) toneutral1. Close the throttle so that the engine

slows to idle speed.

2. After the engine is at idle speed in gearmove the remote control lever / gearshift lever firmly and crisply into the neu-tral position.

EMU31742

Stopping boat

WARNINGEWM01510

● Do not use the reverse function to slowdown or stop the boat as it could causeyou to lose control, be ejected, or im-


Operation

63

pact the steering wheel or other parts ofthe boat. This could increase the risk ofserious injury. It could also damage theshift mechanism.

● Do not shift into reverse while travelingat planing speeds. Loss of control, boatswamping, or damage to the boat couldoccur.

The boat is not equipped with a separatebraking system. Water resistance stops it af-ter the throttle lever is moved back to idle.The stopping distance varies depending ongross weight, water surface conditions, andwind direction.EMU30880

TrollingEMU30890

Adjusting trolling speedThe trolling speed on outboard motorsequipped with the variable trolling RPMswitches can be adjusted approximately 50r/min with each press of a switch.

To increase the trolling speed, press the “ ”switch.To decrease the trolling speed, press the“ ” switch.

TIP:● The trolling speed changes approximately

50 r/min each time a switch is pressed.● If the trolling speed has been adjusted, the

engine returns to the normal trolling speedwhen the engine is stopped and restartedor when the engine speed exceeds ap-proximately 3000 r/min.

EMU27821

Stopping engineBefore stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-ping the engine immediately after operatingat high speed is not recommended.EMU27847

Procedure1. Push and hold the engine stop button or

turn the main switch to “ ” (off).

1. “ ” switch2. “ ” switch


Operation

64

2. After stopping the engine, disconnectthe fuel line if there is a fuel joint on theoutboard motor.

3. Tighten the air vent screw on the fueltank cap (if equipped).

4. Remove the key if the boat will be left un-attended.

TIP:The engine can also be stopped by pullingthe cord and removing the clip from the en-gine shut-off switch, then turning the mainswitch to “ ” (off).EMU27862

Trimming outboard motor

WARNINGEWM00740

Excessive trim for the operating condi-tions (either trim up or trim down) cancause boat instability and can makesteering the boat more difficult. This in-creases the possibility of an accident. Ifthe boat begins to feel unstable or is hardto steer, slow down and/or readjust thetrim angle.

The trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-prove performance and fuel economy whilereducing strain on the engine. Correct trimangle depends upon the combination ofboat, engine, and propeller. Correct trim isalso affected by variables such as the load inthe boat, sea conditions, and running speed.

ZMU03632

ZMU07082

ZMU02301


Operation

65

EMU27885

Adjusting trim angle (Power trim and tilt)

WARNINGEWM00753

● Be sure all people are clear of the out-board motor when adjusting the trimangle. Body parts can be crushed be-tween the motor and the clamp bracketwhen the motor is trimmed or tilted.

● Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabil-ity or control problems. Improper trimangle can cause loss of control.

● If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is ata complete stop with the engine off. Donot adjust the trim angle with this

switch while the boat is moving.

Adjust the outboard motor trim angle usingthe power trim and tilt switch.

To raise the bow (trim-out), press the switch“ ” (up).

1. Trim operating angle

1ZMU03633




UP

DNZMU03634

1


Operation

66

To lower the bow (trim-in), press the switch“ ” (down).Make test runs with the trim set to differentangles to find the position that works best foryour boat and operating conditions.EMU27912

Adjusting boat trimWhen the boat is on plane, a bow-up attituderesults in less drag, greater stability and effi-ciency. This is generally when the keel line ofthe boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sate for this as you steer. When the bow ofthe boat is down, it is easier to acceleratefrom a standing start onto plane.

Bow UpToo much trim-out puts the bow of the boattoo high in the water. Performance and econ-omy are decreased because the hull of theboat is pushing the water and there is moreair drag. Excessive trim-out can also causethe propeller to ventilate, which reduces per-formance further, and the boat may “por-poise” (hop in the water), which could throwthe operator and passengers overboard.

Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Oper-ating with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.

TIP:Depending on the type of boat, the outboardmotor trim angle may have little effect on thetrim of the boat when operating.EMU27935

Tilting up and downIf the engine will be stopped for some time orif the boat is moored in shallows, the out-board motor should be tilted up to protect thepropeller and lower casing from damage bycollision with obstructions, and also to re-duce salt corrosion.


Operation

67

WARNINGEWM00222

Make sure that no one is near the out-board motor when tilting the outboardmotor up or down. Otherwise, body partscould be crushed between the outboardmotor and the clamp bracket.

WARNINGEWM00250

Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than afew minutes. Otherwise fuel may leak.

NOTICEECM00241

● Before tilting the outboard motor, stopthe engine by following the procedureon page 63. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result.

● Do not tilt up the engine by pushing thetiller handle (if equipped) because thiscould break the handle.

EMU32724

Procedure for tilting up (power trim and tilt models)1. Place the remote control lever / gear

shift lever in neutral.

2. Press the power trim and tilt switch “ ”(up) until the outboard motor has tiltedup completely.

N

ZMU03196

UP

ZMU03639


Operation

68

3. Pull the tilt support lever toward you tosupport the engine. WARNING! Aftertilting the outboard motor, be sure tosupport it with the tilt support knob ortilt support lever. Otherwise the out-board motor could fall back downsuddenly if oil in the power trim andtilt unit or in the power tilt unit losespressure. [EWM00262] NOTICE: Do not usethe tilt support lever or knob whentrailering the boat. The outboard mo-tor could shake loose from the tiltsupport and fall. If the motor cannotbe trailered in the normal running po-sition, use an additional support de-vice to secure it in the tilt position.For more detailed information, seepage 71. [ECM01641]

4. Models equipped with trim rods: Oncethe outboard motor is supported with thetilt support lever, press the power trim

and tilt switch “ ” (down) to retract thetrim rods. NOTICE: Make sure that thetrim rods retracts completely duringmooring. This protects the rods frommarine growth and corrosion, whichcould damage the power trim and tiltmechanism. [ECM00252]

EMU33121

Procedure for tilting down (power trim and tilt models)1. Push the power trim and tilt switch “ ”

(up) until the outboard motor is support-ed by the tilt rod and the tilt support leverbecomes free.

2. Release the tilt support lever.

3. Push the power trim and tilt switch “ ”(down) to lower the outboard motor tothe desired position.

ZMU03640

ZMU03644

DN

ZMU01936

UP

DN


Operation

69

EMU28061

Shallow waterEMU32851

Power trim and tilt modelsThe outboard motor can be tilted up partiallyto allow operation in shallow water.

NOTICEECM00260

Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-ing can result.

EMU32913

Procedure for power trim and tilt models1. Place the remote control lever / gear

shift lever in neutral.

2. Slightly tilt the outboard motor up to thedesired position using the power trimand tilt switch. WARNING! Using thepower trim and tilt switch on the bot-tom cowling while the boat is movingor engine is on could increase therisk of falling overboard and coulddistract the operator, increasing therisk of collision with another boat oran obstacle. [EWM01850]

DNZMU03645

UP

ZMU01935

UP

DN


Operation

70

3. To return the outboard motor to the nor-mal running position, press the powertrim and tilt switch and slowly tilt the out-board motor down.

EMU35391

Cruising in other conditionsCruising in salt waterAfter operating in salt water, flush the coolingwater passages with fresh water to preventthem from becoming clogged. Also rinse theoutside of the outboard motor with fresh wa-ter.Cruising in muddy, turbid, or acidic waterWater in some areas can be acidic or with alot of sediment in it, such as muddy or turbid(cloudy) water. After operating in such water,flush the cooling passages with fresh waterto prevent corrosion. Also rinse the outsideof the outboard motor with fresh water.

UP

ZMU03650


71

MaintenanceEMU41510

Transporting and storing outboard motor

WARNINGEWM02620

● USE CARE when transporting fuel tank,whether in a boat or car.

● DO NOT fill fuel container to maximumcapacity. Gasoline will expand consid-erably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential firehazard.

● Leaking fuel is a fire hazard. Whentransporting and storing the outboardmotor, disconnect the fuel line from theoutboard motor to prevent fuel fromleaking.

● Never get under the outboard motorwhile it is tilted. Severe injury could oc-cur if the outboard motor accidentallyfalls.

● Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tiltsupport and fall. If the outboard motorcannot be trailered in the normal run-ning position, use an additional sup-port device to secure it in the tiltposition.

When storing or transporting the outboardmotor, make sure to follow the procedure list-ed below.

● Disconnect the fuel line from the outboardmotor.

● Tighten the fuel tank cap and its air ventscrew.

● When the outboard motor is tilted pro-longed time for mooring or trailering theboat, disconnect the fuel line from the out-board motor. Tighten the fuel tank cap andits air vent screw.

The outboard motor should be transportedand stored in the normal running position. Ifthere is insufficient road clearance in this po-sition, then trailer the outboard motor in thetilt position using a motor support devicesuch as a transom saver bar. Consult yourYamaha dealer for further details.

EMU28280

Storing outboard motorWhen storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealerprior to storage. However, you, the owner,with a minimum of tools, can perform the fol-lowing procedures.

NOTICEECM01080

● To prevent problems which can becaused by oil entering the cylinder from

ZMU03659


Maintenance

72

the sump, keep the outboard motor inthe attitude shown when transportingand storing it. If storing or transportingthe outboard motor on its side (not up-right), put it on a cushion after drainingthe engine oil.

● Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder throughthe exhaust port and cause engine trou-ble.

● Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

EMU28305

ProcedureEMU30007

Flushing with the flushing attachment1. Wash the outboard motor body using

fresh water. NOTICE: Do not spray wa-ter into the air intake. [ECM01840] For fur-ther information, see page 75.

2. Fill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” to each gallon of fuel.

TIP:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system isto be drained instead.3. Remove the top cowling and propeller.4. Install the flushing attachment over the

cooling water inlet. NOTICE: Do not runthe engine without supplying it withcooling water. Either the engine waterpump will be damaged or the enginewill be damaged from overheating.Before starting the engine, be sure tosupply water to the cooling waterpassages. Avoid running the out-

board motor at high speed while onthe flushing attachment, otherwiseoverheating could occur. [ECM02000]

5. Cooling system flushing is essential toprevent the cooling system from clog-ging up with salt, sand, or dirt. In addi-tion, fogging/lubricating of the engine ismandatory to prevent excessive enginedamage due to rust. Perform the flush-ing and fogging at the same time.WARNING! Do not touch or removeelectrical parts when starting or dur-ing operation. Keep hands, hair, andclothes away from the flywheel andother rotating parts while the engineis running. [EWM00091]

TIP:● When using the flushing attachment, main-

tain adequate water pressure and a steadywater flow.

● If the overheat alert device is activated,turn the engine off, and consult yourYamaha dealer.

6. Run the engine at a fast idle for a fewminutes in neutral position while supply-ing fresh water.

7. Just prior to turning off the engine, quick-ly spray “Yamaha Stor-Rite EngineFogging Oil” alternately into the intake

1. Flushing attachment


Maintenance

73

silencer or the fogging hole of the silenc-er cover, if equipped. When properlydone, the engine will smoke excessivelyand almost stall.

8. Remove the flushing attachment andwipe off any excess water.

9. Install the top cowling and propeller.10. Drain the cooling water completely out of

the motor. Clean the body thoroughly.

TIP:A flushing attachment is available from yourYamaha dealer.EMU28402

Lubrication1. Install the spark plug(s) and torque to

proper specification. For information onspark plug installation, see page 82.

2. Change the gear oil. For instructions,see page 87. Inspect the oil for the pres-ence of water that indicates a leaky seal.Seal replacement should be performedby an authorized Yamaha dealer prior touse.

3. Grease all grease fittings. For further de-tails, see page 80.

TIP:For long-term storage, fogging the enginewith oil is recommended. Contact yourYamaha dealer for information about foggingoil and procedures for your engine.

EMU30266

Cleaning and anticorrosion measures1. Wash down the exterior of the outboard

motor with fresh water and dry off com-pletely. NOTICE: Do not spray waterinto the air intake. [ECM01840]

2. Spray the outboard motor exterior with“Yamaha Silicone Protectant”. NOTICE:Do not spray when the engine is run-ning. Also, do not spray near the si-lencer or into the engine. Otherwisethe engine could be damaged. [ECM01402]

3. Wax the cowling with a non-abrasivewax such as “Yamaha Silicone Wax”.

EMU28444

Flushing power unitPerform this procedure right after operationfor the most thorough flushing.

NOTICEECM01530

Do not perform this procedure while theengine is running. The water pump maybe damaged and severe damage fromoverheating can result.

1. After shutting off the engine, unscrewthe garden hose connector from the fit-ting on the bottom cowling.

ZMU07083


Maintenance

74

2. Screw the garden hose adapter onto agarden hose, which is connected to afresh water supply, and then connect itto the garden hose connector.

3. With the engine off, turn on the water tapand let the water flush through the cool-ing passages for about 15 minutes. Turnoff the water and disconnect the gardenhose adapter from the garden hose con-nector.

4. Reinstall the garden hose connectoronto the fitting on the bottom cowling.Tighten the connector securely.NOTICE: Do not leave the gardenhose connector loose on the bottomcowling fitting or let the hose hangfree during normal operation. Waterwill leak out of the connector instead

1. Fitting2. Garden hose adapter3. Garden hose connector

1

32

ZMU05096

1. Fitting2. Garden hose adapter3. Garden hose connector

1

32

ZMU07087


Maintenance

75

of cooling the engine, which cancause serious overheating. Be surethe connector is tightened securelyon the fitting after flushing the en-gine. [ECM00541]

TIP:● When flushing the engine with the boat in

the water, tilting up the outboard motor un-til it is completely out of the water willachieve better results.

● For cooling system flushing instructions,see page 71.

EMU28451

Cleaning the outboard motorAfter use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.

EMU28461

Checking painted surface of outboard motorCheck the outboard motor for scratches,nicks, or flaking paint. Areas with damagedpaint are more likely to corrode. If necessary,clean and paint the areas. A touch-up paint isavailable from your Yamaha dealer.EMU2848A

Periodic maintenance

WARNINGEWM01871

These procedures require mechanicalskills, tools, and supplies. If you do not

have the proper skills, tools, or suppliesto perform a maintenance procedure,have a Yamaha dealer or other qualifiedmechanic do the work.The procedures involve disassemblingthe motor and exposing dangerous parts.To reduce the risk of injury from moving,hot, or electrical parts:● Turn off the engine and keep the key(s)

and engine shut-off cord (lanyard) withyou when you perform maintenance un-less otherwise specified.

● The power trim and tilt switches oper-ate even when the ignition key is off.Keep people away from the switcheswhenever working around the motor.When the motor is tilted, keep awayfrom the area under it or between it andthe clamp bracket. Be sure no one is inthis area before operating the powertrim and tilt mechanism.

● Allow the engine to cool before han-dling hot parts or fluids.

● Always completely reassemble the mo-tor before operation.

Maintenance, replacement, or repair ofthe emission control devices and sys-tems may be performed by any marineengine repair establishment or individual.All warranty repairs, however, includingthose to the emission control system,must be performed by an authorizedYamaha marine dealership.A service manual is available for purchasethrough your Yamaha dealer for owners whohave the mechanical skills, tools, and otherequipment necessary to perform mainte-nance not covered by this owner’s manual.EMU28511

Replacement partsIf replacement parts are necessary, use only

ZMU02550


Maintenance

76

genuine Yamaha parts or parts of equivalentdesign and quality. Any part of inferior qualitymay malfunction, and the resulting loss ofcontrol could endanger the operator andpassengers. Yamaha genuine parts and ac-cessories are available from your Yamahadealer.EMU35521

Maintenance interval guidelinesThe service intervals provided in the Mainte-nance Chart were developed based upon“typical” use that includes operating at variedspeeds, with sufficient time for engine warmup and cool-down, a medium to light load,and an average cruising speed near the3000 to 4000 rpm range. As with any engine,however, if your normal operating conditionsare different, you should consider servicemore often than shown, especially how oftenyou change your engine oil and gear oil. Ex-amples might include extended wide-open-throttle use or long periods of trolling oridling, carrying heavy loads, or frequentstarting and stopping or shifting. More fre-quent maintenance will often pay off manytimes over in increased engine life and great-er owner satisfaction. Consult your Yamahadealer for additional maintenance recom-mendations.


Maintenance

77

EMU34446

Maintenance chart 1TIP:● Refer to the sections in this chapter for explanations of each owner-specific action.● The maintenance cycle on these charts assume usage of 100 hours per year and regular

flushing of the cooling water passages. Maintenance frequency should be adjusted whenoperating the engine under adverse conditions such as extended trolling.

● Disassembly or repairs may be necessary depending on the outcome of maintenancechecks.

● Expendable or consumable parts and lubricants will lose their effectiveness over time andthrough normal usage regardless of the warranty period.

● When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine shouldbe flushed with clean water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.The “ ” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial Every

20 hours (3

months)

100 hours

(1 year)

300 hours

(3 years)

500 hours

(5 years)

Anode(s) (external)Inspection or replace-ment as necessary

Anode(s) (cylinder head, thermostat cover)

Inspection or replace-ment as necessary

Anodes (exhaust cover, cooling water passage cover, Rectifier Regula-tor cover)

Replacement

Battery (electrolyte level, terminal)

Inspection

Battery (electrolyte level, terminal)

Fill, charging or replac-ing as necessary

Cooling water leakageInspection or replace-ment as necessary

Cowling lock lever Inspection

Engine starting condi-tion/noise

Inspection

Engine idle speed/noise

Inspection

Engine oil Replacement

Engine oil filter (car-tridge)

Replacement


Maintenance

78

Fuel filter (can be dis-assembled)


Fuel line (High pres-sure)

Inspection

Fuel line (High pres-sure)


Fuel line (Low pres-sure)

Inspection

Fuel line (Low pres-sure)


Fuel pumpInspection or replace-ment as necessary

Fuel/engine oil leakage Inspection

Gear oil Replacement

Greasing points Greasing

Impeller/water pump housing


Impeller/water pump housing

Replacement

Power trim and tilt unit Inspection

Propeller/propeller nut/cotter pin


Shift link/shift cableInspection, adjustment or replacement as nec-essary

Spark plug(s)Inspection or replace-ment as necessary

Spark plug caps/spark plug wires


Water from the cooling water pilot hole

Inspection

Throttle link/throttle cable/throttle pick-up timing

Inspection, adjustment or replacement as nec-essary

ThermostatInspection or replace-ment as necessary

Timing beltInspection or replace-ment as necessary

Valve clearanceInspection and adjust-ment

Item Actions

Initial Every

20 hours (3

months)

100 hours

(1 year)

300 hours

(3 years)

500 hours

(5 years)


Maintenance

79

EMU34451

Maintenance chart 2

Cooling water inlet Inspection

Main switch/stop switchInspection or replace-ment as necessary

Wire harness connec-tions/wire coupler con-nections


(Yamaha) Meter/gauge Inspection

Fuel tank (Yamaha por-table tank)

Inspection and clean-ing as necessary

Item ActionsEvery

1000 hours

Exhaust guide/exhaust manifold


Timing belt Replacement

Item Actions

Initial Every

20 hours (3

months)

100 hours

(1 year)

300 hours

(3 years)

500 hours

(5 years)


Maintenance

80

EMU28933

GreasingYamaha marine grease (Water resistant grease)F50, F60, T50, T60

ZMU05087


Maintenance

81

F70A

ZMU07089


Maintenance

82

F70HA

EMU28957

Cleaning and adjusting spark plugThe spark plug is an important engine com-ponent and is easy to inspect. The conditionof the spark plug can indicate somethingabout the condition of the engine. For exam-ple, if the center electrode porcelain is verywhite, this could indicate an intake air leak orcarburetion problem in that cylinder. Do notattempt to diagnose any problems yourself.Instead, take the outboard motor to aYamaha dealer. You should periodically re-move and inspect the spark plug becauseheat and deposits will cause the spark plugto slowly break down and erode.1. Remove the spark plug caps from the

spark plugs.2. Remove the spark plug. If electrode ero-

sion becomes excessive, or if carbon

and other deposits are excessive, youshould replace the spark plug with an-other of the correct type. WARNING!When removing or installing a sparkplug, be careful not to damage the in-sulator. A damaged insulator couldallow external sparks, which couldlead to explosion or fire. [EWM00561]

3. Be sure to use the specified spark plug,otherwise the engine may not operateproperly. Before fitting the spark plug,

ZMU07088

Standard spark plug:F50TR DPR6EB-9F60TR DPR6EB-9F70A LKR7ET50TR DPR6EB-9T60TR DPR6EB-9


Maintenance

83

measure the electrode gap with a wirethickness gauge; replace it if out of spec-ification.

4. When fitting the plug, wipe off any dirtfrom the threads, and then screw it in tothe correct torque.

TIP:If a torque-wrench is not available when youare fitting a spark plug, a good estimate ofthe correct torque is 1/4 to 1/2 a turn past fin-ger-tight. Have the spark plug adjusted to thecorrect torque as soon as possible with atorque-wrench.

EMU29044

Inspecting idle speed

WARNINGEWM00451

● Do not touch or remove electrical partswhen starting or during operation.

● Keep hands, hair, and clothes awayfrom the flywheel and other rotatingparts while the engine is running.

NOTICEECM00490

This procedure must be performed whilethe outboard motor is in the water. Aflushing attachment or test tank can beused.

If the boat is not equipped with a tachometerfor the outboard motor, use a diagnostic ta-chometer for this procedure. Results mayvary depending on whether testing is con-ducted with the flushing attachment, in a testtank, or with the outboard motor in the water.1. Start the engine and allow it to warm up

fully in neutral until it is running smooth-ly.

2. Once the engine has warmed up, verifywhether the idle speed is set to specifi-cation. For idle speed specifications, seepage 14. If you have difficulty verifyingthe idle speed, or the idle speed requiresadjustment, consult a Yamaha dealer orother qualified mechanic.

EMU37494

Changing engine oil

NOTICEECM01710

Change the engine oil after the first 20hours of operation or 3 months, and ev-ery 100 hours or at 1-year intervals there-after. Otherwise the engine will wearquickly.

1. Spark plug gap2. Spark plug part number3. Spark plug I.D. mark (NGK)

Spark plug gap:0.8–0.9 mm (0.031–0.035 in)

Spark plug torque:F50TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)F60TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)F70A 17.0 Nm (1.73 kgf-m, 12.5 ft-lb)T50TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)T60TR 18.0 Nm (1.84 kgf-m, 13.3 ft-lb)


Maintenance

84

The engine oil should be extracted with an oilchanger.1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out-board motor is not level, the oil levelindicated on the oil dipstick may notbe accurate. [ECM01861]

2. Start the engine. Warm it up and keepthe idle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10minutes.

4. Remove the top cowling.5. Remove the oil filler cap. Pull out the dip-

stick and use the oil changer to extractthe oil completely.

6. Add the correct amount of oil through thefiller hole. Put back the filler cap and thedipstick. NOTICE: Overfilling the oilcould cause leakage or damage. If the

oil level is above the upper levelmark, drain until the level meets thespecified capacity. [ECM01850]

7. Leave the outboard motor for 5-10 min-utes.

8. Remove oil dipstick and wipe it clean.9. Insert the dipstick and remove it again.

Be sure to completely insert the dipstick

1. Oil changer

ZMU03659

1

ZMU06187

1. Oil filler cap

1. Oil filler cap

Recommended engine oil:4-stroke outboard motor oil

Replacement engine oil quantity (at peri-odic maintenance):

Without oil filter replacement: 1.9 L (2.01 US qt, 1.67 Imp.qt)

With oil filter replacement: 2.1 L (2.22 US qt, 1.85 Imp.qt)

1

ZMU05101

1

ZMU07091


Maintenance

85

into the dipstick guide, otherwise the oillevel measurement will be incorrect.

10. Recheck the oil level using the dipstickto be sure the level falls between the up-per and lower marks. Consult yourYamaha dealer if the oil level is out ofspecified level.

11. Start the engine and make sure that thelow oil pressure-alert indicator remainsoff. Also, make sure that there are no oilleaks. NOTICE: If the low oil pressure-alert indicator comes on or if thereare oil leaks, stop the engine and findthe cause. Continued operation witha problem could cause severe enginedamage. Consult your Yamaha dealerif the problem cannot be located andcorrected. [ECM01622]

12. Dispose of used oil according to localregulations.

TIP:● For more information on the disposal of

used oil, consult your Yamaha dealer.● Change the oil more often when operating

the engine under adverse conditions suchas extended trolling.

EMU29114

Inspecting wiring and connectors● Inspect that each connector is engaged

securely.● Inspect that each ground lead is properly

secured.

EMU32112

Checking propeller

WARNINGEWM01881

You could be seriously injured if the en-gine accidentally starts when you arenear the propeller. Before inspecting, re-moving, or installing the propeller, placethe shift control in neutral, turn the mainswitch to “ ” (off) and remove the key,and remove the clip from the engine shut-off switch. Turn off the battery cut-offswitch if your boat has one.

Do not use your hand to hold the propellerwhen loosening or tightening the propeller

1. Lower level mark2. Oil dipstick3. Upper level mark

1 3 2

ZMU05091

ZMU07106

ZMU07107


Maintenance

86

nut. Put a wood block between the anti-cavi-tation plate and the propeller to prevent thepropeller from turning.

Checkpoints● Check each of the propeller blades for ero-

sion from cavitation or ventilation, or otherdamage.

● Check the propeller shaft for damage.● Check the splines for wear or damage.● Check for fish line tangled around the pro-

peller shaft.

● Check the propeller shaft oil seal for dam-age.

EMU30662

Removing propellerEMU29197

Spline models1. Straighten the cotter pin and pull it out

using a pair of pliers.2. Remove the propeller nut, washer, and

spacer (if equipped). WARNING! Do

not use your hand to hold the propel-ler when loosening the propeller nut.[EWM01890]

3. Remove the propeller, washer (ifequipped), and thrust washer.

EMU30672

Installing propellerEMU29234

Spline models

NOTICEECM00501

Make sure to use a new cotter pin andbend the ends over securely. Otherwise,the propeller could come off during oper-ation and be lost.

1. Apply Yamaha marine grease or a corro-sion resistant grease to the propellershaft.

2. Install the spacer (if equipped), thrustwasher, washer (if equipped), and pro-peller on the propeller shaft. NOTICE:Make sure to install the thrust washerbefore installing the propeller. Other-wise, the lower case and propellerboss could be damaged. [ECM01881]

ZMU01897

1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer


Maintenance

87

3. Install the spacer (if equipped) and thewasher. Tighten the propeller nut to thespecified torque.

4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.NOTICE: Do not reuse the cotter pin.Otherwise, the propeller can come offduring operation. [ECM01891]

TIP:If the propeller nut does not align with thepropeller shaft hole after tightening to thespecified torque, tighten the nut further toalign it with the hole.EMU29289

Changing gear oil

WARNINGEWM00800

● Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you.

● Never get under the lower unit while itis tilted, even when the tilt support lever

or knob is locked. Severe injury couldoccur if the outboard motor accidental-ly falls.

1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.

2. Place a suitable container under thegear case.

3. Remove the gear oil drain screw andgasket. NOTICE: If there is an exces-sive quantity of metal particles on themagnetic gear oil drain screw, thiscan indicate lower unit problem. Con-sult your Yamaha dealer. [ECM01900]

TIP:● If a magnetic gear oil drain screw is

equipped, remove all metal particles fromthe screw before installing it.

● Always use new gaskets. Do not reuse theremoved gaskets.

4. Remove the oil level plug and gasket toallow the oil to drain completely.NOTICE: Check the used gear oil afterit has been drained. If the gear oil ismilky or contains water or a largeamount of metal particles, the gearcase may be damaged. Have aYamaha dealer check and repair the

Propeller nut tightening torque:F50TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)F60TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)F70A 34.0 Nm (3.47 kgf-m, 25.1 ft-lb)T50TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)T60TR 35.0 Nm (3.57 kgf-m, 25.8 ft-lb)

ZMU020631. Gear oil drain screw2. Oil level plug

ZMU03273

2

1


Maintenance

88

outboard motor. [ECM00713]

TIP:For disposal of used oil, consult yourYamaha dealer.5. Put the outboard motor in a vertical posi-

tion. Using a flexible or pressurized fill-ing device, inject the gear oil into thegear oil drain screw hole.

6. Put a new gasket on the oil level plug.When the oil begins to flow out of the oillevel plug hole, insert and tighten the oillevel plug.

7. Put a new gasket on the gear oil drain

screw. Insert and tighten the gear oildrain screw.

EMU29302

Cleaning fuel tank

WARNINGEWM00920

Gasoline is highly flammable, and its va-pors are flammable and explosive.● If you have any question about properly

doing this procedure, consult yourYamaha dealer.

● Keep away from sparks, cigarettes,flames, or other sources of ignitionwhen cleaning the fuel tank.

● Remove the fuel tank from the boat be-fore cleaning it. Work only outdoors inan area with good ventilation.

● Wipe up any spilled fuel immediately.● Reassemble the fuel tank carefully. Im-

proper assembly can result in a fuelleak, which could result in a fire or ex-plosion hazard.

● Dispose of old gasoline according to lo-cal regulations.

1. Empty the fuel tank into an approvedcontainer.

2. Pour a small amount of suitable solventinto the tank. Install the cap and shakethe tank. Drain the solvent completely.

3. Remove the screws holding the fuel jointassembly. Pull the assembly out of thetank.

Recommended gear oil:Hypoid gear oil SAE#90

Gear oil quantity:F50TR 0.430 L (0.455 US qt, 0.378 Imp.qt)F60TR 0.430 L (0.455 US qt, 0.378 Imp.qt)F70A 0.670 L (0.708 US qt, 0.590 Imp.qt)T50TR 0.670 L (0.708 US qt, 0.590 Imp.qt)T60TR 0.670 L (0.708 US qt, 0.590 Imp.qt)

Tightening torque:9 Nm (0.9 kgf-m, 6.6 ft-lb)

ZMU03274

Tightening torque:9 Nm (0.9 kgf-m, 6.6 ft-lb)


Maintenance

89

4. Clean the filter (located on the end of thesuction pipe) in a suitable cleaning sol-vent. Allow the filter to dry.

5. Replace the gasket with a new one. Re-install the fuel joint assembly and tightenthe screws firmly.

EMU29313

Inspecting and replacing anode(s)Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal anodes periodically. Remove scalesfrom the surfaces of the anodes. Consult aYamaha dealer for replacement of externalanodes.

NOTICEECM00720

Do not paint anodes, as this would renderthem ineffective.

TIP:Inspect ground leads attached to externalanodes on equipped models. Consult aYamaha dealer for inspection and replace-ment of internal anodes attached to the pow-er unit.EMU29323

Checking battery (for electric start models)

WARNINGEWM01902

Battery electrolyte is poisonous andcaustic, and batteries generate explosivehydrogen gas. When working near thebattery:● Wear protective eye gear and rubber

gloves.● Do not smoke or bring any other source

of ignition near the battery.

The procedure for checking the battery var-ies for different batteries. This procedure

ZMU02324

ZMU04721

ZMU02820

ZMU04722


Maintenance

90

contains typical checks that apply to manybatteries, but you should always refer to thebattery manufacturer’s instructions.

NOTICEECM01920

A poorly maintained battery will quicklydeteriorate.

1. Check the electrolyte level.

2. Check the battery’s charge. If your boatis equipped with the digital speedome-ter, the voltmeter and low battery alertfunctions will help you monitor the bat-tery’s charge. If the battery needs charg-ing, consult your Yamaha dealer.

3. Check the battery connections. Theyshould be clean, secure, and covered byan insulating cover. WARNING! Badconnections can produce shorting orarcing and cause an explosion.[EWM01912]

EMU29343

Connecting the battery

WARNINGEWM00572

Mount the battery holder securely in adry, well-ventilated, vibration-free loca-tion in the boat. Install a fully charged bat-tery in the holder.

NOTICEECM01124

Do not reverse the battery cables. Other-

wise, the electrical parts could be dam-aged.

Connect the RED cable to the POSITIVE (+)terminal first. Then connect the BLACK cableto the NEGATIVE (-) terminal.Using a single batteryConnect both red cables to the (+) terminal.

WARNINGEWM00590

Do not leave cable unconnected. If it acci-dentally contacts the NEGATIVE (-) termi-nal of the battery, there will be a shortcircuit. Electric system damage and a firecould result.

Using an accessory batteryUse a connecting cable between the (-) ter-minals of the starting battery and accessorybattery. See the illustrations of the wiringconnections. This cable must be made fromwire equivalent to the starting battery cable.

WARNINGEWM00600

Use of smaller wire could lead to a fire.

TIP:Consult your Yamaha dealer about correctwiring if a battery selector switch is desired.

1. Red cable2. Black cable3. Battery

ZMU01811

1

23


Maintenance

91

EMU29371

Disconnecting the battery1. Turn off the battery cut-off switch (if

equipped) and main switch. NOTICE: Ifthey are left on, the electrical systemcan be damaged. [ECM01930]

2. Disconnect the negative cable(s) fromthe negative (-) terminal. NOTICE: Al-ways disconnect all negative (-) ca-bles first to avoid a short circuit anddamage to the electrical system.[ECM01940]

3. Disconnect the positive cable(s) and re-move the battery from the boat.

4. Clean, maintain, and store the batteryaccording to the manufacturer’s instruc-tions.


92

Trouble RecoveryEMU29427

TroubleshootingA problem in the fuel, compression, or igni-tion systems can cause poor starting, loss ofpower, or other problems. This section de-scribes basic checks and possible remedies,and covers all Yamaha outboard motors.Therefore some items may not apply to yourmodel.If your outboard motor requires repair, bringit to your Yamaha dealer.If the engine trouble-alert indicator is flash-ing, consult your Yamaha dealer.

Starter will not operate.Q. Is battery capacity weak or low?A. Check battery condition. Use battery ofrecommended capacity.

Q. Are battery connections loose or corrod-ed?A. Tighten battery cables and clean batteryterminals.

Q. Is fuse for electric start relay or electric cir-cuit blown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.

Q. Are starter components faulty?A. Have serviced by a Yamaha dealer.

Q. Is shift lever in gear?A. Shift to neutral.

Engine will not start (starter operates).Q. Is fuel tank empty?A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?A. Clean or replace filter.

Q. Is starting procedure incorrect?A. See page 58.

Q. Has fuel pump malfunctioned?A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.

Q. Are spark plug cap(s) fitted incorrectly?A. Check and re-fit cap(s).

Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.

Q. Are ignition parts faulty?A. Have serviced by a Yamaha dealer.

Q. Is engine shut-off cord (lanyard) not at-tached?A. Attach cord.

Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls.Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.


Trouble Recovery

93

Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.

Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.


Q. Have ignition parts failed?A. Have serviced by a Yamaha dealer.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.


Q. Is specified engine oil not being used?A. Check and replace oil as specified.

Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.

Q. Are carburetor adjustments incorrect?A. Have serviced by a Yamaha dealer.

Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.

Q. Is air vent screw on fuel tank closed?A. Open air vent screw.

Q. Is choke knob pulled out?

A. Return to home position.

Q. Is motor angle too high?A. Return to normal operating position. Q. Is carburetor clogged?A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?A. Connect correctly.

Q. Is throttle valve adjustment incorrect?A. Have serviced by a Yamaha dealer.

Q. Is battery cable disconnected?A. Connect securely.

Alert buzzer sounds or indicator lights.Q. Is cooling system clogged?A. Check water intake for restriction.

Q. Is engine oil level low?A. Fill oil tank with specified engine oil.

Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.

Q. Is specified engine oil not being used?A. Check and replace oil with specified type.

Q. Is engine oil contaminated or deteriorat-ed?A. Replace oil with fresh, specified type.

Q. Is oil filter clogged?A. Have serviced by a Yamaha dealer.

Q. Has oil feed/injection pump malfunc-tioned?A. Have serviced by a Yamaha dealer.


Trouble Recovery

94

Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.

Q. Is water pump or thermostat faulty?A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter cup?A. Drain filter cup.

Engine power loss.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?A. Install correct propeller to operate out-board at its recommended speed (r/min)range.

Q. Is trim angle incorrect?A. Adjust trim angle to achieve most efficientoperation.

Q. Is motor mounted at incorrect height ontransom?A. Have motor adjusted to proper transomheight.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is boat bottom fouled with marine growth?A. Clean boat bottom.

Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.

Q. Are weeds or other foreign matter tangled

on gear housing?A. Remove foreign matter and clean lowerunit.

Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.


Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.

Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.


Q. Have electrical parts failed?A. Have serviced by a Yamaha dealer.

Q. Is specified fuel not being used?A. Replace fuel with specified type.

Q. Is specified engine oil not being used?A. Check and replace oil with specified type.

Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.

Q. Is air vent screw closed?A. Open the air vent screw.

Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.


Trouble Recovery

95

Q. Is fuel joint connection incorrect?A. Connect correctly.

Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.

Q. Is high pressure fuel pump drive belt bro-ken?A. Have serviced by a Yamaha dealer.

Q. Is engine not responding properly to shiftlever position?A. Have serviced by a Yamaha dealer.

Engine vibrates excessively.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign matter tangledon propeller?A. Remove and clean propeller.

Q. Is motor mounting bolt loose?A. Tighten bolt.

Q. Is steering pivot loose or damaged?A. Tighten or have serviced by a Yamahadealer.EMU29433

Temporary action in emergency

EMU29441

Impact damage

WARNINGEWM00870

The outboard motor can be seriouslydamaged by a collision while operating or

trailering. Damage could make the out-board motor unsafe to operate.

If the outboard motor hits an object in the wa-ter, follow the procedure below.

1. Stop the engine immediately.2. Check the control system and all compo-

nents for damage. Also, check the boatfor damage.

3. Whether damage is found or not, returnto the nearest harbor slowly and careful-ly.

4. Have a Yamaha dealer check the out-board motor before operating it again.

EMU30682

Replacing fuseIf a fuse has blown, open the fuse holder andremove the fuse with a fuse puller. Replaceit with a spare one of the proper amperage.

WARNINGEWM00631

Substituting an incorrect fuse or a pieceof wire could allow excessive currentflow. This could cause electric systemdamage and a fire hazard.

Consult your Yamaha dealer if the new fuseimmediately blows again.


Trouble Recovery

96

EMU29524

Power trim and tilt will not operateIf the engine cannot be tilted up or down withthe power trim and tilt because of a dis-charged battery or a failure with the powertrim and tilt unit, the engine can be tiltedmanually.1. Loosen the manual valve screw by turn-

ing it counterclockwise until it stops.

2. Put the engine in the desired position,then tighten the manual valve screw byturning it clockwise.

1. Fuse (20 A 3, 30 A)2. Spare fuse (20 A 3, 30 A)3. Fuse puller

1. Fuse (15A, 20 A, 30 A)2. Spare fuse (15A, 20 A, 30 A)3. Fuse puller

3

2

1

12

ZMU05099

2

13

ZMU07093

1. Fuse puller

1. Manual valve screw

1

ZMU04337

1

ZMU03668


Trouble Recovery

97

EMU41460

Water separator-alert indicator blinks while cruising

WARNINGEWM01500

Gasoline is highly flammable, and its va-pors are flammable and explosive.● Do not perform this procedure on a hot

or running engine. Allow the engine tocool.

● There will be fuel in the fuel filter. Keepaway from sparks, cigarettes, flames orother sources of ignition.

● This procedure will allow some fuel tospill. Catch fuel in a rag. Wipe up anyspilled fuel immediately.

● The fuel filter must be reassembledcarefully with the O-ring, filter cup, andhoses in place. Improper assembly orreplacement could result in a fuel leak,which could result in a fire or explosionhazard.

If the water separator-alert indicator on theCommand Link tachometer blinks, performthe following procedure.

F50, F60, T50, T601. Stop the engine.2. Remove the top cowling.3. Remove the plastic tie.

4. Disconnect the water detection switchcoupler. NOTICE: Be careful not to getany water on the water detectionswitch coupler, otherwise a malfunc-tion could occur. [ECM01950]

5. Unscrew the filter cup from the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen unscrewing the filter cup.[ECM01960]

1. Water separator-alert indicator

1. Plastic tie

1. Water detection switch coupler

1

ZMU05475

1

ZMU05476


Trouble Recovery

98

6. Drain the water in the filter cup by soak-ing it up with a rag.

7. Firmly screw the filter cup onto the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen screwing the filter cup onto thefilter housing. [ECM01970]

8. Connect the water detection switch cou-pler securely until a click is heard.

9. Fasten the water detection switch leadwith the plastic tie.

10. Install the top cowling.11. Start the engine and make sure that the

water separator-alert indicator remainsoff. Have a Yamaha dealer inspect theoutboard motor after returning to port.

F701. Stop the engine.2. Remove the top cowling.3. Remove the cover.

4. Remove the holder.

1. Filter cup2. Water detection switch lead


1

2

ZMU05477

1

ZMU05509

1. Plastic tie

1

ZMU05475

ZMU07095


Trouble Recovery

99

5. Disconnect the water detection switchcoupler. NOTICE: Be careful not to getany water on the water detectionswitch coupler, otherwise a malfunc-tion could occur. [ECM01950]

6. Unscrew the filter cup from the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen unscrewing the filter cup.[ECM01960]

7. Drain the water in the filter cup by soak-ing it up with a rag.

8. Firmly screw the filter cup onto the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen screwing the filter cup onto thefilter housing. [ECM01970]

9. Connect the water detection switch cou-pler securely until a click is heard.

10. Fasten the water detection switch leadwith the holder.

1. Holder


1 ZMU07094

1 ZMU07096

1. Filter cup2. Water detection switch lead


2

1

ZMU07097

1 ZMU07100


Trouble Recovery

100

11. Install the cover.12. Install the top cowling.13. Start the engine and make sure that the

water separator-alert indicator remainsoff. Have a Yamaha dealer inspect theoutboard motor after returning to port.

EMU29542

Starter will not operateIf the starter mechanism does not operate(the engine cannot be cranked with the start-er), the engine can be started manually withan emergency starter rope. However, the en-gine cannot be started manually if the batteryvoltage is low. If the battery is discharged to9 volts or below, the electric fuel pump willnot operate.

WARNINGEWM01022

● Use this procedure only in an emergen-cy to return to the nearest port for re-pairs.

● When the emergency starter rope isused to start the engine, the start-in-gear protection device does not oper-ate. Make sure the remote control leveris in neutral. Otherwise the boat couldunexpectedly start to move, whichcould result in an accident.

● Attach the engine shut-off cord to a se-

cure place on your clothing, or yourarm or leg while operating the boat.

● Do not attach the cord to clothing thatcould tear loose. Do not route the cordwhere it could become entangled, pre-venting it from functioning.


● Make sure no one is standing behindyou when pulling the starter rope. Itcould whip behind you and injuresomeone.

● An unguarded, rotating flywheel is verydangerous. Keep loose clothing andother objects away when starting theengine. Use the emergency starter ropeonly as instructed. Do not touch the fly-wheel or other moving parts when theengine is running. Do not install thestarter mechanism or top cowling afterthe engine is running.

● Do not touch the ignition coil, sparkplug wire, spark plug cap, or other elec-trical components when starting or op-erating the motor. You could get anelectrical shock.

EMU29583

Emergency starting engine1. Remove the top cowling.2. Remove the flywheel cover.

1. Holder

1 ZMU07094


Trouble Recovery

101

3. Prepare the engine for starting. For fur-ther information, see page 58. Be surethe engine is in neutral and that the clipis attached to the engine shut-off switch.

4. Turn on the main switch.

5. Insert the knotted end of the emergencystarter rope into the notch in the flywheelrotor and wind the rope around the fly-wheel several turns clockwise.

6. Give a strong pull straight out to crankthe engine. Repeat if necessary.WARNING! Do not install the topcowling when engine is running.[EWM00621]

EMU33501

Treatment of submerged motorIf the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corrosion may begin almost immedi-ately. NOTICE: Do not attempt to run theoutboard motor until it has been com-pletely inspected. [ECM00401]

ZMU03670

ON STARTOFF

ZMU01906

ZMU07099


102

Consumer informationEMU29830

YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY


Consumer information

103


Consumer information

104

EMU29841

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA


6C1-9-19 Hyoshi.indd 3 2010/02/18 14:41:36

Printed in JapanFebruary 2010–2.1 × 1 ! Printed on recycled paper

6C1-9-19 Hyoshi.indd 4 2010/02/18 14:41:36

Documents

OWNER’S MANUAL - · PDF fileImportant manual information EMU31285 To the owner Thank you for selecting a Yamaha outboard motor. This Owner’s Manual contains infor-mation needed