How to How to Fix a Running Toilet
A running toilet wastes 200 gallons per day and adds $70/month to water bills. Fix it in 15 minutes with these simple repairs.
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0 of 5 steps completedStep-by-Step Instructions
1 Step 1: Identify the Problem
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 1: Identify the Problem
Remove tank lid. Flush and watch: flapper not sealing, fill valve running continuously, or float stuck? Most common: worn flapper.
2 Step 2: Check and Replace Flapper
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 2: Check and Replace Flapper
Turn off water. Flush to empty tank. Remove old flapper from overflow tube. Clean flapper seat. Install new flapper - match size and type.
3 Step 3: Adjust Fill Valve
Mike Johnson: "Pro tip: Make sure to double-check this before moving to the next step..."
Step 3: Adjust Fill Valve
Water should stop 1" below overflow tube. Adjust float height by pinching clip and sliding up/down or turning adjustment screw.
4 Step 4: Check Chain Length
Step 4: Check Chain Length
Chain should have 1/2" slack when flapper is closed. Too tight: won't seal. Too loose: won't open fully. Adjust hook position.
5 Step 5: Test and Fine-Tune
Step 5: Test and Fine-Tune
Turn water back on. Let tank fill. Flush. Watch for leaks. Add food coloring to tank - if color appears in bowl after 15 min, flapper still leaking.