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Read installation guide in illustration and word filecarefully, and install the tank according toinstructions in the guide to avoid product damageand installation inconvenience caused byinappropriate operation.All data contained is based upon the last productinformation available at the time of publication.Kohler Co. Reserves the right to implement changesof product characteristics, packaging and availabilityat any time without further notice.Do not apply erosive cleanser and solvent in the

tank, which will damage tank spares and result inleakage in the tank. Kohler will not be responsiblefor any damage related to above mentionedcleanser or solvent.Do not apply spares that are not provided by Kohler,and please note that glass adhesive tape shall notbe applied to the installation of Kohler spares.Kohler will not be responsible for any damagerelated to installation with spares not provided byKohler.

Ordering Information

OVE Tank Cover...........................................K-6288T-** OVE In-Wall Tank II (Without Iron Rack For Wall-HungToilet) ........................................................K-6287IN-NAOVE In-Wall Tank With Flexible Outlet ..K-6287IN-F-NA

Function Explanation

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Anti flow-backwards

Adjustment of inlet water level Single/double gear

� Adjustment of flushing volume

flushing

Design And Installation Concept Of In-wall

Tank

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Installation of shorten in-wall tank is much easier

and nice-looking comparative to that of traditional

tank. Meanwhile, the space layout will be more

reasonable due to the application of in-wall tank

pipes and connectors.

The most remarkable advantage of shorten in-wall

that the installation will never be limited to

certain area, and can be installed wherever as you wish,

which will make the bathroom layout more reasonable

and nice-looking, and make good use of every inch of

the bathroom space.

tank is

Advantages Of In-wall Tank

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�Will not affect the structure of the wall and providesexcellent sound insulation.

Easy installation and time efficient..

.Clean, garbage free, and space .

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Made ofmacromolecular materials thatpreventscorrison and leaking.Adjustable dual flush design which conserves water.

Do notneed toprepare any other spare partsEasymaintenance and servicing

saving

INSTALLATIONINSTRUCTIONS

-1- Copyright 2010 Kohler Co.C

IN-WALL TANK II

WITHOUT IRON RACKK-6288T/K-6287IN-NA/K-6287IN-F-NA

OVE

1078530-K02-C

ROUGHING-IN

UNIT: mmInstallation dimensions without iron rack for wall-hung K-6287IN-NA

Installation dimensions without iron rack for wall-hung K-6287IN-F-NA

-2-

400kg

440

140

190

348

700-8

00

94

196

0-48

0-48

440

190

348

100

135

140

40

520

620

(Adjustable Range)

1078530-K02-C

INSTALLATION

Installation Method

K-6287IN-NA K-6287IN-F-NA

100 Flexible

1.Drill four holes with diameter of 12mm and depth of60mm as shown in Fig. A, fix expanding bolt, then installthe fixing frame and tighten the long screw.

Align tank with fixing hole of the fixing frame as shown inFig. B, adjust and wrap it with washer, and then tightenscrews.

A.Install the in-wall tank

Expanding bolt

Long screw

Fixing frame

WasherScrews

A

B

2. Adjust the tank to level position with leveller as shownin the below figure and tighten screws with hex keywrench.

Note: it is necessary to keep the tank balanced.

Leveller

Tank

Loosen

Hex Key Wrench

Screws

-3-

OVE In-Wall Tank With Flexible OutletIn-wall Tank II Without Iron RackFor Wall-Hung Toilet

1078530-K02-C

B. Installation methods for front push andtop push buttons

The product features two kinds of push buttons, toppush and front push respectively.

-4-

1. Installation method for top push buttons

1) Use scissors to cut the protective panel as shown inthe figure.

Cover

Knife

Connecting hose for tank

Water hose

3. Connect the water hose to tank supply pipe and fill thewater. (Note: inlet valve shall be shut off at this time)

1078530-K02-C

2) Fix the square mask into the roof panel of the tank,and then tighten four screws to make the mask fit thetank enough. For flexible outlet (K-6287IN-F-NA), pushthe pipe up or down to get proper height of outlet.

3) Fix protective cap to the drain hole as shown in thefigure.

4) Clear the finished wall as shown in the figure. Takethe protective cap out and use scissors to cut the part ofthe square mask that protrudes out of the wall.

Square mask

Screws

Square mask

Small protective cap

-5-

Scissors

Protective panel

2. Installation method for front push

1) Use scissors to cut the protective panel as shown inthe figure.

Push up (For flexible outlet)

Push down (For flexible outlet)

Protective cap

1078530-K02-C

-6-

3) Fix the protective cap on the drain hole as shown inthe figure.

4) Clear the finished wall as shown in the figure. Takethe protective cap out and use scissors to cut the part ofthe square mask that protrudes out of the wall.

Square mask

Small protective cap

2) Fix the square mask into the roof panel of the tank andtighten four screws to make it fit the tank.

Roof Panel

Screw

Square mask

Protective cap

1078530-K02-C

1) Install the adjusting panel on the wall, then turn thelocking pipe manually to fix the panel. Alignmentbetween the locking pipe and "LOCK" logo indicates thepanel is right in position.(Please refre to the alignmentmark on the adjusting panel during installation.)

2) Insert the long screw through the fixing hole andtighten screws.Note: Mark on the long screw shall be alighed with thefixing hole during the process.)

3. Installation method for front push buttons

3) Align the groove of the panel with tab of the adjustingpanel, then push upward and lock them forward. Theinstallation shall be carried out from the bottom to the top.

4) Complete the installation and the in-wall tank is readyto be put into use.

-7-

Adjusting panel

Locking pipe

Fixing hole

Mark

Long screw

Panel

Groove

PanelAdjusting panel

Big push buttonSmall push button

1078530-K02-C

REMOVE AND MAINTENANCE OF OUTLET VALVEREMOVE AND MAINTENANCE OF OUTLET VALVE

1. Hold the cover with both hands and push upward totake down the cover.

Cover

Cover

Long Screw

2. Loosen the long screw as shown.

3. Tighten the locknut to the marked position ofOPEN to take out the adjustable board.

Locknut

Adjustable Board

-8-1078530-K02-C

Adjustable Board

4. Take out the adjustable board as shown.

5. Take out the pole lock and the reversed lock asshown.

Reversed Lock

Pole Lock

6. Take out the inlet valve as shown. Loosen theterminal of the pipe, then grasp the top of the inletvalve and push back.

Pipe

Top

Inlet Valve

-9-1078530-K02-C

9. Turn the outlet valve in according to the arrowdirection, then the outlet valve can be taken out.Installing and removing the outlet valve will click.

Outlet Hole

Outlet Valve

7. Hole the pole bracket with your hands as shown.Then take out the pole bracket by pulling it.

Pole Bracket

Cover

Close

Lock

8. Move the lock on or off by hand.

Move the lock on and open the cover, then theoutlet valve can be loosen.

Note:

Open

-10-1078530-K02-C

A. Wash Filtration Net

Close corner valve first, then loosen and take out the

tighten nut, and wash the waste on filtration net with

clean water. Then reset the tighten nut to the original

position.

Tighten

Close

Open

Corner

Open

A

Tighten

Close

C

Filtration Net

B

Floating Box

Drainage valve

Adjustment Switch

B. Adjust Drainage Valve

Drainage volume and overflow level of the tank can

be adjusted by drainage valve: 1) Heavy drainage

adjustment: Open adjustment switch to open the

small hole. 2) Slight drainage adjustment: adjust the

height of floating box and the water level of slight

drainage will be at the bottom of the floating box.

Control Pole

Inlet Valve

Floating Box

C. Adjust Inlet Valve

Hoist and reduce the water level in the tank by

adjusting the control pole. Turn the control pole

counterclockwise to lower down the floating box and

reduce the water level of the tank. Turn the control

pole clockwise to hoist the floating box and increase

the water level in the tank.

-11-1078530-K02-C

TROUBLE SHOOTING PROCEDURESTROUBLE SHOOTING PROCEDURES

No water fills in via inletvalve

The inlet valve is closed Open inlet valve (refer to page 14)

Floating box of inlet valve is blocked by tankwall

Adjust floating box to appropriateposition

Floating box of inlet valve is block by waste Wash the floating box with clean water

Long screw is tighten too far. Loosen the long screw, make sure thesign the long screw accords with thehole on (refer to page 7).

Pole lock is not locked tight enough with thereversed lock.

Relock the pole lock with the reversedlock.

Water level of the inlet valve is not appropriate

No drainage whenpressing the heavy andslight drainage button

Too high or too lowwater level

Leak of the toilet andsquat

Symptoms Probable Causes Recommended Action

The outlet valve is not installed tight enoughwith the outlet hole.

The rubber gasket of the outlet valve isblocked by waste.

Toilet swing Hexagonal nut is loose

Readjust water level (refer to page 14)

Retighten the outlet valve (refer to page13)

Clean the rubber gasket of the outletvalve.

Tighten the hexagonal nut (refer to page9)

Kohler plumbing fixtures and fittings are warranted tobe free of manufacturing defects.

To obtain warranty service, contact Kohler eitherthrough your Dealer or Plumbing Contractor or bywriting Kohler Co., Attn: Consumer Affairs Department,Kohler, WI 53044 U.S.A.

Some states do not allow limitations on how long animplied warranty lasts or the exclusion or limitation ofincidental or consequential damages, so this limitationand exclusion may not apply to you. This warrantygives you specific legal rights. You may also haverights which vary from state to state.

This is our exclusive written warranty.

Kohler Co., Kohler, Wisconsin 53044

Kohler Co. will, at its election repair, replace, or makeappropriate adjustment where Kohler Co. inspectiondiscloses any such defects occurring in normal usagewithin one year after installation.

Co.

Kohler Co. is notresponsible for installation costs.

Implied warranties, including that ofmerchantability and fitness for a particular purpose,are expressly limited in duration to the duration of

this warranty. To the extent permitted by law,Kohler Co. disclaims all implied warrantiesincluding merchantability and fitness for aparticular purpose. Kohler Co. disclaims anyliability for special, incidental, or consequentialdamages.

LIMITED ONE-YEAR WARRANTYLIMITED ONE-YEAR WARRANTY

-12-1078530-K02-C

SHORTEN IN-WALL TANKK-6288T/K-6287IN-NA

OVE

-13-

Service Parts

1045070G12 Filter

KL01

KL02

KL03

KL05

KL06

KL04

1059145Filter Connection1045071G06 Valve1045072Tank Inlet Connection1045073Washer1045074Locknut

1059146Tank, Top

1059147Paster, Front

1059148Wrap

1059149Paster, Rear

1059668Cap

1059150Tank, Bottom

1059151Bracket, Right

1059152Bracket, Left

1059153Tank, Carve

1111013Melt Seal

1045140Rubber Gasket

1045142Outlet Pipe

1045092Rubber Gasket

1045143Plug, Small

1059154Pipe

1045129Joint Nut

1045096747 Side Fill Valve

1059155Hook, Left

1059156Hook, Right

1111019Tundish

1059157P60A Flush Valve

1045102Rubber Gasket

1045081Expanding Bolt Cap

1078341 Fixing Frame Assembly

1045161Washer1045082Self-tapping Screw1045080Washer1051401Screw A

1078342Fixing Frame

1078530-K02-C

SHORTEN IN-WALL TANKK-6287IN-F-NA

OVE

Service Parts

-14-

1045070G12 Filter

KL01

KL02

KL03

KL05

KL06

KL04

1059145Filter Connection1045071G06 Valve1045072Tank Inlet Connection1045073Washer1045074Locknut

1059146Tank, Top

1059147Paster, Front

1059148Wrap

1059149Paster, Rear

1059668Cap

1059150Tank, Bottom

1059151Bracket, Right

1059152Bracket, Left

1045138O Ring

1045088Connection Pipe

1111013Melt Seal

1045137 Tank Outlet Pipe

1045140Rubber Gasket

1045139Adjustment Pipe

1045142Outlet Pipe

1045092Rubber Gasket

1045143Plug, Small

1059154Pipe

1045129Joint Nut

1045096747 Side Fill Valve

1059155Hook, Left

1059156Hook, Right

1111019Tundish

1059157P60A Flush Valve

1045102Rubber Gasket

1045081Expanding Bolt Cap

1078341 Fixing Frame Assembly

1045161Washer1045082Self-tapping Screw1045080Washer1051401Screw A

1078342Fixing Frame

1078530-K02-C

SHORTEN IN-WALL TANKK-6288T/K-6287IN-NA/K-6287IN-F-NA

OVE

Service Parts

-15-

1059169Fixation Shank

1059170Location Panel

1059172Push Bar

1059132Spring

1059133ST3 X 8 Screw

1059134Fixation Cover

1059137Cover

1045119Screw

1059166Roof Panel

1059167ST3.5 Screw

1059168Square Mask

1059136Big Push Button

1059159Clip

1059158Location Block

1059160Push Arm

1059161Location Piece

1059162Tank Bracket

1059163Small Push Pole

1059164Screw Sheath

1059165Big Push Pole

Big Push Arm1065474

Small Push Arm1065473

1065472Foam Baffle

1059135Small Push Button

1053792Cap

1053793Rubber Gasket

1084328PE Outlet Pipe

1053796Elow Rubber Gasket

KL11

KL10

KL09KL07

KL08

1045170Outlet Pipe, Rear

1045171Rubber Gasket

Straight Outlet Pipe System

1045172Outlet Pipe, Front

1045173Outlet Pipe

1045174Rubber Gasket1045175Plug, Big

1078530-K02-C