IMPORTANT! Use only KOHLER Genuine Parts to avoid property damage and achieve optimal performance.
- The phrase “Standard Toilets” applies to floor-mounted toilets with standard flush and fill valves and dual flush models.
- Refer to In-Wall Toilet Tank Troubleshooting if you have an in-wall toilet tank.
- Refer to Sloan Flushmate® Valve Troubleshooting if you have a Sloan Flushmate Valve.
- The components in your tank may look slightly different than those shown in the illustrations. The troubleshooting steps remain the same.
- Follow the Corrective Actions for your particular troubleshooting problem.
The troubleshooting problems in this help topic include:
- Poor Flush
- No Flush
- Water Running Continuously
- Water Running Sporadically
- Long Tank Fill Cycle
- Noisy Tank Fill Cycle
- Trip Arm Strikes the Underside of the Tank Lid
If you are unable to correct the problem, contact KOHLER Customer Care Center: us.kohler.com/general/contact.jsp.
- Check the trip lever chain for excessive slack. Remove one or two chain links to remove slack, if needed.
- For dual flushing toilets, verify that the rod length is correct.
- Verify that the hose is properly connected to the top of the canister.
- Verify that the water level meets the marked waterline. Adjust the water level in the tank to match the waterline mark.
- Clean the rim holes under the bowl rim.
- Clear any obstructions from the toilet bowl trapway, jet and/or waste line.
- Use a plunger and auger to clear blockage from the trap and waste line.
- Verify that the trip lever chain is attached to the handle. Reconnect the chain to the trip lever or flush valve, if needed.
- Check the trip lever for excessive slack. Remove one or two chain links to remove slack, if needed.
- If applicable: Adjust the trip lever arm to be parallel with the top of the tank.
- If applicable: Adjust the trip arm bracket to fit flat against the inside tank wall, and position it vertically with the tank bottom.
Water Running Continuously
- Clean the fill valve seat or replace the fill valve.
- Replace the fill valve with a KOHLER fill valve if the float sinks.
- If lowering the tank water level does not correct the overflow problem, clean or replace the fill valve.
- If applicable: Adjust the trip arm bracket and flange so they are parallel with the top of the tank.
Water Running Sporadically
- Adjust the chain for proper slack so the seal is not held off the flush valve seat.
- If the water in the tank is overflowing into the toilet, adjust the tank water level.
- 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 seat or flush valve.
- Two-Piece Toilet: Remove the tank and tighten the flush valve nut if the flush valve gasket is leaking. Do not overtighten! If the leakage continues, replace the gasket.
Long Tank Fill Cycle
- Fully open the water supply shut-off valve.
- Verify that the flapper or canister are properly seating after the flush. A loose chain or other object may be interfering with the refill.
- Clean the fill valve inlet or the fill valve seat/seat washer.
- Verify that the water supply is free of debris.
Noisy Tank Fill Cycle
- Partially close the water supply shut-off valve.
- Check the fill valve for debris, and clean as needed.
- Make sure the rim feed hose (if equipped) is connected to the overflow and fill valve.
- Replace the fill valve with a genuine KOHLER fill valve for optimal performance.
Trip Arm Strikes the Underside of the Tank Lid
- Adjust the flush ball chain assembly to remove excessive slack.
- Adjust the trip arm bracket and flange so they are parallel with the tank top.
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