The flapper is a large semicircular sheet of rubber that sits over the hole that releases the water from the tank into the toilet. Now the absolutely best possible thing to do is run to the store and buy a new seal disk. Install The Replacement To install a new flapper, you can either drop, snap, slide or screw the replacement into place. Take note of the parts in your tank: the flushing handle should be connected to a long metal or plastic handle arm that connects to the flapper chain. If a Mansfield toilet uses a flush valve that employs a flapper, it is a breeze to replace the Mansfield flapper with a Fluidmaster flapper. But Mansfield replacement parts are far less expensive, because they are mostly mass-produced plastic parts.
Replace the flapper with a matching new part. If the flapper chain has a float on it, lower the float closer to the flapper. Next, unclip the lift chain from the flapper and remove the flapper by pulling it free from the pegs. It takes about five minutes. It lifts when you flush and allow water to flow in to rinse and fill the bowl. Lift off the toilet tank lid and set it aside carefully. The Mansfield toilet lever is exactly the same as any other toilet lever.
There is usually a small clip on the top end of the chain that hooks into one of the holes on the handle lever. Turn the valve handle clockwise to shut off the water supply to the toilet. Turn the dial clockwise until it stops moving. Purchase The Replacement Toilet flapper comes in three different types; they are tank ball, rubber and seat disk. Empty the tank if it runs again.
Now, take the flapper off the flush valve, which is the piece the supply tube was connected to. The toilet should flush forcefully and immediately, and refill within about 30-45 seconds. When a toilet continues to run after you flush it, there are several possible causes, but a good place to start is by simple observation. When the screw is turned in, the float will shut off the water at a lower level. Slide the holes on either side of the rubber seal over the pegs on the valve, then clip the lift chain to the lower end of the toilet handle lever.
If you take the cover off the tank of your toilet and peer inside, you will see an unusual component down in the bottom: a kind of hinged flap valve made of plastic and soft rubber usually black or red that is connected to the chain hanging down from the flush handle lever. Replacing this seal should make your toilet flush with one finger again. If your new one has a chain, disconnect the existing chain from the flush lever. This led me to suspect that the fill valve simply needed an adjustment. Turn off the water supply at the shut-off valve behind the toilet. Things You'll Need Slide the retaining nut over the toilet lever arm and tighten the nut until the it is hand tight.
The Adjust-A-Flush is no more difficult to install than a standard flapper and does not require any special tools. I can and have changed out my toilet Fill and Flush valves and all, but before I go through any of that again, just want to confirm what makes most sense. After that, you'll need to connect the new flapper by sliding the holes on the rubber seal over the pegs and reattaching the lift chain. While sometimes there are to the flapper, in other instances it happens because the rubber of the flapper hardens over time and can no longer seal the valve. Wait a few moments for the water level to rise well above the flush valve, then press the handle. Slip the side ears of the flapper off of the pegs extending from the sides of the flush valve tube. Afterward, turn your water supply back on by turning it counterclockwise and wait for the toilet to fill up.
Basic observation can tell you what's causing the problem. Finally, press down on the toilet handle to check how it's flushing and adjust the paper clip location as needed until you achieve the right tightness. I knew I had to take the fill valve apart and inspect it for wear. Start by opening up the paper clip until it's straight. I just unscrewed the plastic ring.
If the water in the bowl has changed colors, you most likely need a new flapper. Doing this will make it easier to replace the flapper without spilling any toilet water. Set it down on a piece of cardboard to avoid getting your floor wet. I could lift up the float the big blue ball on the right side, in the top photo about an inch and make the water shut off. If it were torn, I would have definitely replaced it.