Kohler REACH K-3991T-HC Installation Instructions Manual Download Page 7

PUSH BUTTON INSTALLATION

NOTE:

Remove the package and screw out the nut. Make the

button through the tank cover as shown. Be noted that the
button shall be kept level. Arrange big and small flush buttons
according to the label of water consumption on the tank.
Tighten the nut from beneath the tank cover.

TANK COVER INSTALLATION

NOTE:

Press down the spring and insert the button into the

installation position on the tank cover. Release the spring to
lock it. Be noted not to let the steel wire of the flush valve
resting on the lever of the fill valve.

-7-

Fig.#16

16

Fig.#17

17

Spring

SYMPTOMS

CORRECTIVE ACTION

1. Poor Flush

A. Adjust the tank water level to match the waterline.
B. Fully open the water supply shut-off valve.
C. Clear obstructions from the trapway, jet, or bowl rim holes.
D. Clear obstructions from the waste line.

A. Adjust the chain for proper slack so the seal is not held off the flush valve seat.
B. Clean or replace the seal if it is worn, dirty, or misaligned with the flush valve seat, or

if the flush valve seat is damaged. Replace the flush valve seal or flush valve.

C. Clean the fill valve seat/seat washer of debris, or replace the piston/seat washer

assembly.

D. Remove the tank and tighten the flush valve nut if flush valve gasket is leaking. Do

not overtighten. If leakage continues, replace the gasket.

E. Adjust the tank water level if it is too high.

2. No Flush

IMPORTANT:

Use only genuine Kohler parts as shown to avoid property damage.

4. Tank takes excessive time to fill.

5. There is excessive noise when the

tank is filling.

3. The fill valve turns on/off by itself

without the toilet being flushed, or it
runs allowing water to enter the tank.

A. Reconnect the chain to the trip lever or flush valve.
B. Adjust the chain assembly to remove excessive slack.

A. Fully open the water supply shut-off valve.
B. Clean the valve inlet, valve head, or supply line. Flush the lines.

A. Partially close the water supply shut-off valve if the water pressure to the toilet is too

high. Check the toilet performance following any such adjustment.

B. Remove dirt or obstructions from the valve head. Flush the lines.

1388677-T01-A

Summary of Contents for REACH K-3991T-HC

Page 1: ... HC K 3836T MHC Includes REACH Tank 305mm HC K 4979T HC3 REACH Skirted 2PC Toilet 400mm HC K 4153T HC Includes REACH Skirted Bowl 400mm HC K 4074T MHC Includes REACH Tank 400mm HC K 4979T HC4 305mm K 3991T HC 305mm K 3836T MHC 305mm K 4979T HC3 400mm K 4153T HC 400mm K 4074T MHC 400mm K 4979T HC4 1 Copyright Kohler China Investment Co Ltd 2019 2019 NOTES Observe all local plumbing and building cod...

Page 2: ...asket wax seal Toilet T bolts 2 8mm 5 16 diameter Toilet supply shut off valve 10mm 3 8 recommended If the existing toilet does not have a supply shut off valve below the tank install one before installing the new toilet NOTICE 254mm 305mm 8mm T 2 10mm Unit mm Reference Value K 3991T HC OF OUTLET C L 305 340 275 FRONT OF BOWL Finished Wall Supply 732 170 388 394 200 160 790 For new construction re...

Page 3: ...talled immediately temporarily stuff a rag into the closet flange NOTICE T NOTICE Do not use white cement or high lime content cements to install this toilet The expansion of cement due to a rise in temperature may make the toilet crack or cause damage Kohler is not responsible for any damage caused by installation with the use of cement Closet Flange mm 67mm 200mm 160 Fig 3 3 TO INSTALL SUPPLY SH...

Page 4: ...of plastic trap Wax ring type toilet gasket should not be installed at temperatures less than 21 C If you are using a toilet gasket with an integral plastic sleeve make sure the gasket is positioned with the sleeve facing away from the toilet NOTE 1 NOTE 2 o 1 21 2 o C Install brackets Plastic Trap Outlet Toilet Gasket Fig 8 8 Install plastic to ground and mounted with 3 set of bolts firmly not su...

Page 5: ...er gasket over the flush valve nut Carefully position the tank on the bowl by centering the gasket on the bowl inlet Line up the tank and bowl bolt holes The hook which is outside the front of the bowl is for arranging the inlet pipe and wire of the electronic seat Overtightening may cause breakage or chipping of the vitreous china Install the bolt gaskets onto the tank bolts and slide the tank bo...

Page 6: ...8 turn counterclockwise While holding a container over the uncapped VALVE to prevent splashing turn water supply on and off a few times Leave water supply off Replace END by engaging lugs and rotating 1 8 turn clockwise Turn on water supply Check that water level is at the marked water line 1 8 1 8 Fig 15 15 FILL VALVE ADJUSTMENT Fill float with ballast Adjust the cam clockwise or counter clockwis...

Page 7: ... misaligned with the flush valve seat or if the flush valve seat is damaged Replace the flush valve seal or flush valve C Clean the fill valve seat seat washer of debris or replace the piston seat washer assembly D Remove the tank and tighten the flush valve nut if flush valve gasket is leaking Do not overtighten If leakage continues replace the gasket E Adjust the tank water level if it is too hi...

Page 8: ...an seriously damage fittings in the tank This damage can cause leakage and property damage Kohler Company shall not be responsible or liable for any damage to these tank fittings caused by the use of cleaners containing chlorine calcium hypochlorite WARNING Risk of property or product damage Please do not use hard materials like scouring pad to clean product surface especially the product logo CAU...

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