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Step 3 · Clean the Flush Valve Seat

With the old flapper removed, carefully inspect the flush valve seat, which is the circular rim that the flapper seals against. It must be perfectly smooth to prevent leaks. Use a non-abrasive sponge or cloth to thoroughly wipe down the entire surface of the valve seat, removing any grime, mineral deposits, or leftover rubber residue.

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Step 3 · Clean the Flush Valve Seat

With the old flapper removed, carefully inspect the flush valve seat, which is the circular rim that the flapper seals against. It must be perfectly smooth to prevent leaks. Use a non-abrasive sponge or cloth to thoroughly wipe down the entire surface of the valve seat, removing any grime, mineral deposits, or leftover rubber residue.

Tools and Materials

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How to Replace a Toilet Flapper to Fix a Running or Weak Flushing Toilet

Step 3 of 6·14 min left

Shut Off Water Supply & Drain Tank
5 mins3 itemsBeginner
Remove Old Flapper
2 mins2 itemsBeginner
3
Clean the Flush Valve Seat
3 mins2 itemsBeginner
4
Install New Flapper
2 mins2 itemsBeginner
5
Connect and Adjust the Chain
4 mins2 itemsIntermediate
6
Turn Water On and Test
5 mins1 itemsBeginner
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