How to How to Replace a Toilet Flapper
5 steps
25 min Beginner
Toilet flappers wear out every 3-5 years, causing constant running. Replace in 10 minutes to stop water waste.
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0 of 5 steps completedStep-by-Step Instructions
1 Step 1: Turn Off Water and Drain Tank
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 1: Turn Off Water and Drain Tank
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Turn shutoff valve clockwise (under toilet). Flush to empty tank. Sponge out remaining water.
2 Step 2: Remove Old Flapper
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 2: Remove Old Flapper
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Disconnect flapper chain from flush lever. Remove flapper from posts on overflow tube (slide or unhook ears). Note flapper type.
3 Step 3: Clean Flapper Seat
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 3: Clean Flapper Seat
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Use pumice stone or ScotchBrite to clean rim where flapper seals. Remove mineral deposits, algae. Smooth surface essential for seal.
4 Step 4: Install New Flapper
Step 4: Install New Flapper
Slide new flapper onto overflow tube posts. Ensure ears are properly hooked. Attach chain to flush lever with 1/2" slack.
5 Step 5: Turn On Water and Test
Step 5: Turn On Water and Test
Turn water on slowly. Let tank fill. Flush several times. Adjust chain if needed. Check for leaks around flapper seal.