How to Fix Toilet Flushing Twice
Does your toilet flush twice with only one press of the toilet handle? With a simple adjustment of your toilet flapper, this is quickly resolved. If your toilet is flushing twice, it is most likely due to the fact that it is staying open too long and flushing too much water. If you have an adjustable flapper, this can be corrected by adjusting your toilet flapper to close quicker. If you do not have an adjustable flapper, your toilet may have the incorrect flapper installed. Additionally, please make sure the flapper chain is going as straight up and down as possible from the flush lever and has minimal slack. If the chain has excess slack or is too tight, the flapper may not perform adequately.
Choose from the following options:
- Learn how to fix your double flushing toilet - Video and step-by-step instructions below.
- Click find part to find the correct replacement flapper for your toilet.
- If this doesn't quite describe your toilet issue, choose from the other common troubleshooting topics.
Step 1
Check out the video to learn how to fix your double flushing toilet.
Step 2
Video didn't help? Check out the step-by-step instructions below.
Step 3
You can always give our Technical Support team a call too...We are here and happy to help! U.S.A: (262) 763-2434 & outside U.S.A.: (800) 528-3553. Available: Monday through Friday, 7:30 AM to 5:00 PM CST.

STEP 1: If your flapper is adjustable, adjust it to flush less water. With a float style flapper, this is accomplished by raising the float. With an adjustable cone style flapper, this is accomplished by turning the dial on the flapper to open up larger holes - this will allow the flapper to closer quicker and avoid double flushes. If your flapper is not adjustable, you have an incorrect flapper for your tank and it needs to be replaced.
STEP 2: The first step is to shut off the water supply to your toilet.
STEP 3: Next, flush your toilet to drain the excess water and the remove the old flapper.
STEP 4: Install your Korky flapper by attaching the flapper ears to the tabs of the flush valve. This may vary slightly depending on the Korky flapper model you have. Still need to find a new flapper? Start your search here.
STEP 5: Attach the flapper chain to the flush lever. Making sure the flapper chain is going as straight up and down as possible from the flush lever and has minimal slack. If the chain has excess slack or is too tight, the flapper may not perform adequately.
STEP 6: Turn the water supply back on to complete you installation.