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Replacing a Toilet Flapper

easyHome Repair15-30 minutes9 steps

Safety Warnings

  • Ensure water supply is completely shut off to prevent flooding
  • Handle toilet tank components carefully to avoid cracking porcelain

Tools Needed

Sponge — check locally
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Materials

Replacement Flapper — check locally(1)
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Steps

1
Shut off the water supply to the toilet.
Tip: Turn the shut-off valve clockwise until tight.
2
Drain the tank by flushing the toilet.
Tip: Hold the handle down to allow maximum water release.
3
Empty the remaining water from the tank and bowl by siphoning or sponging out the water.
Tip: Ensure the bottom of the tank is dry to avoid debris entering the drain.
4
Disconnect the chain connecting the flush handle lever to the old flapper.
Tip: Note the length of the chain for the new installation.
5
Remove the old flapper from the overflow tube pegs.
Tip: Slide the rubber ears off the pegs carefully.
6
Install the new flapper by attaching its ears to the overflow tube pegs.
Tip: Ensure the flapper sits flat against the flush valve seat.
7
Attach the flapper chain to the flush lever arm.
Tip: Leave a small amount of slack in the chain so it doesn't pull the flapper open.
8
Turn the water supply back on to fill the tank.
Tip: Check for immediate leaks around the base of the overflow tube.
9
Test for leaks by flushing the toilet a few times.
Tip: Observe if the flapper seals completely after the flush cycle.

Pro Tips

  • Always ensure the flapper is compatible with your specific toilet model for a watertight seal.

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Sources

Synthesized from 5 verified sources:

USDA Farmers' Bulletin (Gutenberg)View →
Gutenberg: Economical Farmhouse PlansView →
Gutenberg: Dwelling ConstructionView →
Gutenberg: Electrical GuideView →
Gutenberg: Electricity for the 4-H ScientistView →