How to Replace a Worn-Out Toilet Flapper

Remove the old flapper:
  • Turn off the water supply to your toilet.
  • Flush the toilet; the tank should empty and will not refill.
  • Remove the lid from the tank, and gently place it on a soft towel.
  • Remove the bowl refill tube (a) from the overflow tube.
  • Remove the chain from the flush lever.
  • Slide the old flapper (b) up and off the overflow tube (c). Note the toilet manufacturer and the model number to purchase the correct replacement flapper


Install the new flapper:
  • Slide the new flapper down over the overflow tube until the ring touches the bottom of the tank; adjust the bulb of the flapper so that it is centered on the valve opening.
  • Attach the chain to the flush lever; adjust the length if necessary.
  • Turn on the water supply to your toilet. Once the tank has refilled, flush the toilet to check that the flapper is installed correctly. The water should quickly shut off.