What would cause a toilet tank to not fill?

A common problem with a tank that isn’t filling up is the float. If it is too low, it stops the flow of water coming into the tank leaving you with an empty tank or one with not enough water. Check this by taking off the tank cover. For older toilets, look for a float ball attached to a float arm.

What to do if there is no water in toilet tank?

If there’s no water in the toilet tank, make sure the water supply valve is fully turned to the open position and check the water supply line for leaks. Make sure there’s no problem with the water supply to the bathroom or rest of the house.

Where do I find the part numbers on my Kohler toilet?

The replacement part numbers for the float/fill valve, flush valve, tank gasket and flush ball/flapper are listed for each toilet. To view all the service parts for your toilet, visit for the expanded service parts pages. Part numbers are imprinted on the underside of the tank lid.

How to install a gasket on a Kohler toilet?

This video will show you how to install the tank gasket (GP51487) and toilet tank on most KOHLER two-piece toilets. If playback doesn’t begin shortly, try restarting your device.

What do you call a standard Kohler toilet tank?

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.

What should I do if my Kohler toilet tank overflows?

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.

How to troubleshoot a Kohler toilet water supply?

1 Fully open the water supply shut-off valve. 2 Verify that the flapper or canister are properly seating after the flush. A loose chain or other object may be interfering with the refill. 3 Clean the fill valve inlet or the fill valve seat/seat washer. 4 Verify that the water supply is free of debris.

The replacement part numbers for the float/fill valve, flush valve, tank gasket and flush ball/flapper are listed for each toilet. To view all the service parts for your toilet, visit for the expanded service parts pages. Part numbers are imprinted on the underside of the tank lid.

Where is the Flapper on a Kohler dual flush toilet?

If you have a Dual Flush toilet, you will see a two-button actuator on top of the toilet rather than a trip lever. Inside the tank you will not see a flapper but a cylinder-shaped flush valve. These toilets do not use a flapper, but a seal. If your toilet is leaking water into the bowl, the seal needs to be replaced, not the flush valve. 5

Do you use Kohler flush and fill valves?

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.