To adjust a ball float, you'll need a flathead screwdriver. Locate the toilet valve shaft, typically on the left side of the tank. "Look for a screw head on the valve that controls the float and ...

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.

Nobody likes to toilet troubles. Nobody.

The float, the flapper, or the fill valve are the most likely causes of a toilet running continuously. You can perform easy tests like monitoring water movement to help identify the cause.

Adjust the float higher or lower so the water is right at the fill line. Ostroff also notes that this is a good time to assess the water supply hose. If you have a rubber line, consider replacing ...

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.