The time saved will outweigh the cost of fussing with an aged flapper. However, some flappers might have a shorter lifespan depending on the pH level of the water or use of chemicals in cleaning the toilet. If the flapper is less than 5 years old, check the rubber surface for debris. Because these flappers are constantly exposed to the water inside the toilet tank, they can eventually begin to wear out. These can go bad after years of service and requiring replacement. I called Toto, explained the problem, and they sent me a replacement flapper(THU331S to replace the THU175S) and also spacers. The 5051 flapper is for a toilet manufactured after 1994. Inspecting the flapper. (in wall tank) toilet leaks water at what would normally be the flapper,it slowly leaks the tank down until it has to fill … If the flapper is more than 5 years old, simply change it. The flapper itself, which is usually made of rubber, can leak, causing the toilet to run. Toto Toilets. These can corrode the flush valve and its components causing your toilet not to function properly. Toilet leak usually caused by flapper or flush valve assembly Q: My toilet is causing me fits. At the bottom of a toilet tank is the flapper, or flush valve ball. If the toilet still leaks after performing these toilet flapper troubleshooting tips, contact a professional plumber at Sobieski Services, Inc. for more help. I have a Toto Drake II (ST454E) from 2011. If the edges of the flapper start to crack or wear, the flapper won't seal properly when it seats back down on the flush opening. Toto Toilets have been available in the market since 1985. After a period of time this part can begin to deteriorate or become defective. Because water had been leaking from tank to bowl, I replaced the flapper, using the Korky "Universal Flapper" (2023 BP). In some cases, you might need to replace parts for the toilet to function well. just installed a toto aquis toilet. Fit the new flapper in place, reattach the chain, turn the water back on and test the replacement. The spacers are nothing more than two pieces of plastic tubing about 3/16" long. When this occurs, water begins to leak around it into the toilet bowl. A worn out flapper is easy to replace, and the replacement flapper is inexpensive. The water from the tank is slowly leaking into the bowl, and I can’t figure out why. NOTE: Never place any cleaning tablets in the water tank of your toilet. If you have a Toto Toilet fill valve, this article will guide you on how to fix it. 3. Take the old flapper to the hardware store to ensure you pick a correct replacement. The trip handle is on the left side (facing) of the toilet and it pulls the flapper to the front of the toilet. They have redefined the domestic gravity flush toilet design with their new systems on a regular basis. 1- Worn flush valve flapper. 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