If water from your toilet tank is leaking into the bowl, the first suspect generally is the flush valve. Here are a few simple steps you should follow in order to replace the flush valve by yourself:
Remove the lid from tank.
Shut off the water by turning the shut-off valve clockwise.
Drain as much water out of the tank as possible by holding the flush lever down until the toilet is completely flushed.
Sponge or towel out any remaining water in the tank. A shop vac also works well.
Disconnect the water supply tube or hose to the tank.
Disconnect flapper chain from tank lever arm.
Disconnect the refill tube attached to the top of the overflow pipe.
Underneath the tank, unscrew bolts that hold the tank to the bowl. You may need to spray them with some penetrating oil first before trying to loosen them.
Lift the tank off of the bowl and set it aside on a towel.
Underneath the tank, unscrew the locknut holding the flush valve to the tank using a plumber’s wrench. Remove the old flush valve.
Install the new flush valve the same way you removed the old one, following the manufacturer’s instructions.
Once installed, reattach the tank to the bowl with tank bolts.
Reattach flapper chain to flush lever arm.
Reattach the fill tube to the new overflow pipe.
Reconnect the water supply to the tank.
Turn on the water, test the new flush valve and check for leaks.
If you need help replacing your toilet tank system, we can help you. We are experts with more than 20 years of experience.
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