How to Replace a Toilet Flush Valve

You may either buy a shorter chain, cut the chain, or connect the handle to a different link in the chain so that there is less slack between the handle and flapper.  If your toilet continuously or periodically runs, you may have a problem with the toilet flapper.  This will save time when installing the new flapper.  The manufacturer's name is often stamped on the outside of the bowl near the seat hinges and the model number is normally on the inside at the back of the tank.  Once the toilet tank has stopped filling with water, flush the toilet toensure that the toilet is flushing and filling properly.  (If not, go directly to step Remove the chain from the flush lever, then remove the old flapper by sliding it up and off of the overflow tube. 

Give the chain a little slack, and then test the seal with a cupful of water before refilling the tank.  When you you push the handle, it should quickly take off the slack and lift the flapper to the fully open position.  If you have a .  If there's no valve or the valve is stuck, turn off the water to the house.  Turn off the water supply and once again flush the toilet. 

.  It's not a big deal if the valve does not stop 00 percent This is an old universal flapper, it got damaged by bleach drop in tablets.  You shouldn't need any tools, but you will need to flush your toilet.  Step : Remove the Old Flapper If the problem is not with the chain, then you probably have an old flapper.  Close the water supply to your toilet.  To fix this, simply shorten and reattach the chain.  If you find sediment beneath the flapper, clean away with a scrub pad and wipe clean. 

Once you have the chain set properly so that it is not too long or too short, then connect the chain permanently to the tank handle and then cut off the excess chain using a pair of snips or dikes.  You may also choose to buy a replacement from an online retailer if the local hardware store does not carry the model you need.  gpf toilet, the store should have information on the correct replacement flapper and settings for adjustable flappers.  The flapper covers the opening inside the base of the toilet tank and regulates the flow and amount of water that refills the toilet tank after each flush.  Generally, when a toilet tank begins to intermittently fill with water (the aftermath of flushing) when no one is using it, this is a sign that the toilet flapper needs replacing.  Make sure to keep up with maintenance of the toilet to prevent problems in the future.   So if you hear your toilet running at night or even during the day, you should call a licensed plumber to repair and rebuild the internal parts of your toilet.  Take the old flap with you if you think it might be difficult to match your flapper with what's available now.