Finalize and Test — Restore Water and Test Flush

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How to Replace a Toilet Flapper to Fix a Running or Weak Flushing Toilet · Step 6 of 6

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Turn the water supply valve counter-clockwise to allow water to fill the tank. Wait for the tank to fill completely; the fill valve will shut off automatically. Once full, test the system. Press the small button (top section) for a half flush and observe the water level drop slightly. Press the large button (bottom section) for a full flush and see the water level drop significantly. Check for any leaks around the base. Finally, place the tank lid back on the toilet.

Goal: Test the new dual-flush system

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Korky Toilet Repair

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FAQs

What are the essential tools and materials I'll need for this flapper replacement?

Beyond the correctly sized flapper (like a Korky 2-inch or TOTO 3-inch), you'll need cleaning supplies. An E-Cloth Microfiber cloth, A-MAZ The Gripper Scrub Pad, a sponge, and water are useful for thoroughly cleaning the flush valve seat. Always have a towel handy for drips or spills.

How difficult is replacing a toilet flapper, and how long does it typically take for a beginner?

This is a beginner-level DIY project, often taking only 15-30 minutes from start to finish. The most challenging part is usually ensuring a good seal and proper chain adjustment, but with clear instructions, it's quite straightforward and can save you a plumber's fee.

My toilet is still running after replacing the flapper. What should I check?

First, ensure the new flapper is sitting flush on the flush valve seat and isn't obstructed by the chain. Clean the flush valve seat thoroughly again, as mineral deposits or grime can prevent a proper seal. If the problem persists, the fill valve might also need adjustment or replacement.

How do I know if I need a 2-inch or 3-inch flapper, and does it matter for my toilet?

The flapper size depends on your toilet's flush valve opening. Most older toilets use a 2-inch flapper, while newer, high-efficiency models often use a 3-inch flapper. It's crucial to get the correct size; you can measure the old flapper or the flush valve opening, or check your toilet's make and model number.

Transcript

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you don't need that next step what we're going to do is we're going to turn on the water who needs a plumber right now the good thing with this is you're going to save about 10 seconds of water flow per flush and if you do the calculations yourself based upon the amount of times you're flushing it how many people live in their house you're going to save a ton of which means a liquid job and the bottom button which is job number two okay we're just going to wait for this fills up it takes about 50 seconds for job number two and about 35 seconds for job number one once that's done again this is going to be just a little bit lower than in the frame and you'll see how much water goes down when we have a job number one now the water is going to fill up to approximately this level here based upon how we set the float we're almost there and this will obviously cover once we put the top on there and she'll be fine there's enough room there almost to the top okay so when you press number one you see that the water doesn't fall that much but it's enough to get everything down and if

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