Configuration 4-stroke, vertical, water cooled diesel engine

Maximum output at crankshaft * 16.2 kW (22 hp) / 3600 rpm** 15.3 kW (21 hp) / 3600 rpm

Continuous rating output at crankshaft 14.7 kW (20 hp) / 3489 rpm

Displacement 0.854 L (52.1 cu in)

Bore x stroke 70 mm x 74 mm (2.8 in x 2.9 in)

Cylinders 3

Combustion system Indirect injection

Aspiration Natural aspiration

Starting system Electric starting 12 V - 1.4 kW

Alternator 12 V - 60 A (80 A optional)

Cooling system Fresh water cooling with heat exchanger

Lubrication system Enclosed, forced lubricating system

Direction of rotation (crankshaft) Counter clockwise viewed from stern

Dry weight without gear 120 kg (266 lbs)

Environmental BSO II, SAV, EPA II compliant and will meet the 2003/44/EC emission requirements

Engine mounting Rubber type flexible mounting

NOTE: Fuel condition: Density at 15°C = 0.842 g/cm3; 1 hp = 0.7355 kW * Fuel temperature 25°C at the inlet of the fuel injection pump (ISO 3046-1) **Fuel temperature 40°C at the inlet of the fuel injection pump (ISO 8665)

Dimensions (For detailed line-drawings, please refer to our web-site: www.yanmarmarine.com)

Front view Right side view

600.

3 m

m (2

3.6

in)

370 mm (14.6 in)

215 mm (8.5 in)248 mm (9.7 in)

max

. 11

6 m

m (4

.6 in

)m

in.

102

mm

(4.0

in)

178.5 mm (7.0 in)336 mm (13.2 in)178.5 mm (7.0 in)

Exhaust pipeo 51 mm (2.0 in)

3YM20 w/ KM2P-1 marine gear693.5 mm (27.3 in)

463 mm (18.2 in)

115

mm

(4.5

in)

Yanmar type 3YM20The Powerful Gem

Marine Gears/Drive

Instrument Panels

Type of instrument panel

Function Digital B-type Panel1 Switch unit

1-1 Key switch for GLOW/OFF/ON/START (4-position switch) O1-2 Push button switch for engine stop O1-3 Moisture cap for key switch O2 Alarm lamp unit

2-1 Battery low charge alarm O2-2 Coolant high temperature alarm O2-3 Lubricating oil low pressure O2-4 Water in sail drive seal alarm O2-5 Water in fuel filter alarm X2-6 Sea water insufficient flow alarm X3 Meters

3-1 Lubricating oil pressure meter X3-2 Coolant temperature meter X3-3 Hour meter O3-4 Tachometer O4 Audible alarm buzzer O

Note: O = Equipped on panel X = Not equipped on panel

Standard Package• Set of flexible mounting• Exhaust/water mixing elbow (L-type)• V-belt cover• Expansion tank for fresh water cooling system• Alternator 12 V - 60 A• Electric stop solenoid

Optional• Additional Digital B-type instrument panel • Primary 80 A alternator or second 60/80 A alternator• Alternator bracket and cover for second alternator• Exhaust/water mixing elbow, U-type (high riser)• Various extension wire harnesses• Various couplings (straights, tapers, slits)

Accessories

1-1 1-33-4 3-3

2-2 2-3 2-4 2-1

DigitalB-typePanel

140

125

79.5180

165 145

13.5

Texts and illustrations are not binding. Yanmar Marine reserves the right to introduce adaptations without prior notification.

1-2 14 13.55

Model KM2P-1 Saildrive (SD20)

Type Constant mesh gear with servo-cone clutch Constant mesh gear with dog clutch

Dry weight 10 kg (22 lbs) 30 kg (66 lbs)

Reduction ratio (fwd/asn) 2.21/3.06 2.62/3.06 3.22/3.06 2.64/2.64

Propeller speed (fwd/asn) 1580/1140 1332/1140 1083/1140 1321/1321

Direction of rotation Clockwise Counter clockwise(propeller shaft - fwd) viewed from stern viewed from stern

Dry weight engine and gear/drive 130 kg (287 lbs) 151 kg (333 lbs)

Length engine and gear/drive 693 mm (27 in) 873 mm (34 in)

1-21-3 1-1

3-4 3-318

016

5140 79.5

125

2-22-32-42-1

Performance Curves (Output is according ISO 8665 - Output includes +/- 3% tolerance)

3400 3600 3800

21

31

41

51

0

3

6

9

12

15

18

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800

0

2

4

6

8

10

12

14

16

18

20

22

24

0

1

2

3

4

5

6

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 38000

0.3

0.6

0.9

1.2

1.5

30

40

50

60

70

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800

21

31

41

51

0

3

6

9

12

15

18

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800

0

2

4

6

8

10

12

14

16

18

20

22

24

0

1

2

3

4

5

6

1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 38000

0.3

0.6

0.9

1.2

1.5

30

40

50

60

70

1600 1800 2000

Maximum output at crankshaft

Power Torque

Maximum output at prop shaft

Propeller power curve

Fuel Consumption

Outp

ut (c

rank

shaf

t/pro

pelle

r sha

ft) k

W

Outp

ut (c

rank

shaf

t/pro

pelle

r sha

ft) h

p

Cran

ksha

ft To

rque

Nm

Cran

ksha

ft To

rque

lb-

ft

Fuel

Con

sum

ptio

n L/

hr

Fuel

Con

sum

ptio

n ga

l/hr

Crankshaft Speed min-1 Crankshaft Speed min-1 Crankshaft Speed min-1

www.yanmarmarine.com