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Step 1
Check to see if the water level in the basin is too high. Try lowering the water level by lowering the float arm if you have a diaphragm style ball cock. Turn the adjustment screw counterclockwise to lower the water level if your toilet has a floatless ball cock. Pinch the spring clip, and slide the float cup down to lower the water level if your toilet has a floating-cup ball cock. If your toilet has a an older plunger-valve style ball cock, replacing it with a diaphragm style ball cock will update and improve your toilet's valve system.
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Step 2
Make sure the bowl refill tube is properly inserted into the overflow tube. Toilets will often splash if this trap is not sufficiently refilled after flushing.
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Step 3
Check to see if the fill valve is cracked. Replace the fill valve if so.
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Step 4
Watch the flapper valve during a flush. It should stay up until almost all of the water is gone from the tank. If it drops too fast, install a new flapper.
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Step 5
Minimize the flow of water by installing a timed flapper. Set it to the shortest flush time.









