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Troubleshooting Guide
Symptoms
1. Poor flush.
2. No flush.
3. The fill valve
turns on/off by
itself without
the toilet being
flushed or it
runs, allowing
water to enter
the tank.
4. Long tank fill
cycle.
5. Noisy tank fill
cycle.
IMPORTANT: Use only genuine Kohler parts to avoid property damage.
1258066-X2-A
Recommended Action
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. Reconnect the chain to the trip lever or flush valve.
B. Adjust the chain assembly to remove excessive slack.
A. Adjust the chain for proper slack so flush ball isn't
held off flush valve seat.
B. Clean or replace the flush valve seal if it is worn, dirty,
or misaligned with the valve seat or flush valve seat is
damaged. Replace flush valve seal or flush valve.
C. Clean the fill valve seal of debris or replace the seal
washer assembly.
D. Remove the tank lid and tighten flush valve nut if flush
valve gasket is leaking. Do not overtighten. If leakage
continues, replace gasket.
E. Replace the fill valve if the valve float sinks.
F. Adjust the tank water level if it is too high.
A. Fully open the water supply shut-off valve.
B. Check the flexible supply line (if applicable) for a kink.
Remove the kink.
C. Clean the valve inlet, valve head, or supply line. Flush
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 lines.
10
Kohler Co.
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