How to Repair a Running Toilet 1. Adjust the Float The float arm controls the water level in your tank. If it’s set too high, water will keep running into the overflow tube.

Bend or adjust the toilet float arm so the tank stops filling when the water level is 1/2- to one-inch below the top of the overflow pipe. If the fill valve still leaks, replace it as shown in the ...

You should replace your toilet’s fill valve every four to five years. There should be about 1/2-in. of slack. No, you should turn off the water before replacing a toilet fill valve. To do this, rotate ...

How to Repair a Running Toilet 1. Adjust the Float The float arm controls the water level in your tank. If it’s set too high, water will keep running into the overflow tube. Locate the float: It ...