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Remove the Old Flapper — Inspect and Replace the Toilet Flapper

Beginner2 hours

Part of project

Toilet Won't Flush? Troubleshooting & Repair Guide · Step 3 of 3

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If the flapper is old, it can become misshapen or degraded, preventing a good seal. To replace it, you will first need to turn off the water supply to the toilet and flush it to drain most of the water from the tank. Unhook the chain from the flush lever arm. Then, gently pull the rubber ears of the old flapper off the two pegs on the sides of the overflow tube to remove it completely.

Goal: Remove the faulty flapper from the toilet tank

  • Make sure the water supply is completely turned off before removing the flapper to avoid a mess.
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Ace Hardware

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FAQs

Is this project genuinely suitable for beginners, and can I realistically complete it within the estimated 2 hours?

Yes, this project is rated as beginner-friendly, primarily involving basic hand tools and simple component replacement. Most common issues, like a low water level or a faulty flapper, can often be resolved within 30-60 minutes. Replacing a fill valve might take slightly longer, but the 2-hour estimate provides ample time for troubleshooting and completion.

What crucial safety precautions should I take before starting any work inside my toilet tank?

Always turn off the water supply to the toilet using the shut-off valve located at the wall behind or beneath the toilet. After turning off the water, flush the toilet to empty the tank and bowl as much as possible, which prevents spills and allows you to work in a dry environment. Consider laying down towels around the base to catch any residual drips.

How can I determine if the problem lies with my toilet's flapper or the fill valve?

If your toilet is constantly running or 'ghost flushing' (refilling itself without being flushed), the flapper is usually the issue, as it's not sealing correctly. If the toilet flushes but takes an excessively long time to refill, or doesn't refill at all, the fill valve is more likely the problem. A simple dye test (adding food coloring to the tank) can confirm a leaking flapper if color appears in the bowl without flushing.

How do I ensure I purchase the correct replacement flapper or fill valve for my specific toilet model?

Before purchasing, open your toilet tank and measure your existing flapper; they are commonly 2-inch or 3-inch, like the TOTO 3 in. model mentioned. For the fill valve, most are universal, but checking your toilet's brand and model number (often inside the tank or on the underside of the tank lid) can help ensure compatibility and a perfect fit for optimal performance.

Transcript
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now if that flapper is old what can happen is it can become mis shapen over time and so it's a good idea to replace that flapper there are many different flappers out there universal ones that you can buy you just want to make sure you get the right one that fits your toilet and then take it off and replace it and just make sure that when you replace it you clean the little rim that

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