To remove the old flapper, shut off the water to the toilet using the shutoff valve below the tank. Flush the toilet to empty the tank as much as possible. With the water supply shut off, it won't refill after you flush it. Taking a picture of the inner workings makes it easier to...
If the water still runs after replacing the flapper, you may need to fix the fill valve or float instead. Part 3 Maintaining a Flapper Download Article 1 Replace your toilet flapper at the first sign of a leak. As soon as you notice your toilet is running, check the flapper and reso...