How to Replace a Toilet Flap Valve

Written by kelly nuttall
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If you have a leak in your toilet, chances are you need a new toilet flap valve. You may be surprised at just how simple it is to remove your old toilet flap valve and replace it with a new one. In no time at all, your toilet will be working leak-free.

Skill level:

Things you need

  • Scissors
  • Wire cutters

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  1. 1

    Turn the water supply to the toilet off and flush the toilet to drain the water out of the toilet tank. It's OK if some of the water remains in the bottom of the tank.

  2. 2

    Unhook the flapper chain from the toilet tank lever and pull the old flapper's mounting ears out of the fitting.

  3. 3

    Place the new flapper over the centre of the tank drain, where the water flows out of the tank and into the bowl, and attach the mounting ears to the fitting in the toilet tank.

  4. 4

    Clip the flapper chain to the appropriate hole in the toilet tank lever. You may have to try a few holes to find the ideal hole in the tank lever. The chain should have a little slack in it when it is connected correctly. Cut away the excess chain with a pair of wire cutters.

  5. 5

    Turn the water supply to the toilet tank back on and allow the tank to fill with water. Flush the toilet a few times to test the flapper and the chain position. Replace the tank cover when you are satisfied with the operation of the new flapper.

Tips and warnings

  • Trim the flapper by cutting the areas on the flapper marked "Cut" with a pair of scissors.

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