The time saved will outweigh the cost of fussing with an aged flapper. If the toilet still leaks after performing these toilet flapper troubleshooting tips, contact a professional plumber at Sobieski Services, Inc. for more help. One of the common causes of a leaking toilet is a bad flapper on the flush valve. just installed a toto aquis toilet. Old Toto toilet flappers, for instance, typically last four to five years due to wear and tear. A worn out flapper is easy to replace, and the replacement flapper is inexpensive. After a period of time this part can begin to deteriorate or become defective. (in wall tank) toilet leaks water at what would normally be the flapper,it slowly leaks the tank down until it has to fill … Because these flappers are constantly exposed to the water inside the toilet tank, they can eventually begin to wear out. Toto Toilets. Take the old flapper to the hardware store to ensure you pick a correct replacement. 1- Worn flush valve flapper. Toilet leak usually caused by flapper or flush valve assembly Q: My toilet is causing me fits. 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. 3. Fit the new flapper in place, reattach the chain, turn the water back on and test the replacement. The reason for the leaking may just be the flapper being a bit loose. If you have a Toto Toilet fill valve, this article will guide you on how to fix it. Inspecting the flapper. Toto Toilets have been available in the market since 1985. 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. Because water had been leaking from tank to bowl, I replaced the flapper, using the Korky "Universal Flapper" (2023 BP). I called Toto, explained the problem, and they sent me a replacement flapper(THU331S to replace the THU175S) and also spacers. Toilets can leak or flush poorly when the chain connecting the flapper to the flush handle is too short or too long. At the bottom of a toilet tank is the flapper, or flush valve ball. These can corrode the flush valve and its components causing your toilet not to function properly. The ball or flapper is supposed to form a watertight seal. If the flapper is less than 5 years old, check the rubber surface for debris. The 5051 flapper is for a toilet manufactured after 1994. NOTE: Never place any cleaning tablets in the water tank of your toilet. If the flapper is more than 5 years old, simply change it. These can go bad after years of service and requiring replacement. The water from the tank is slowly leaking into the bowl, and I can’t figure out why. When this occurs, water begins to leak around it into the toilet bowl. 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