In most cases, you will turn the water shutoff valve clockwise to turn it off. Be sure to continue turning it until it stops moving.
If you don’t have a turkey baster or wet-dry vacuum, use an old towel or sponge to soak up the remaining water and any sediment left in the tank.
The fill valve also has a tube attached to it that connects to the overflow pipe. [4] X Research source
As you unscrew the nut, a bit of water may drip out of the tank. Keep a towel on hand or on the floor below the opening to catch any water that comes out.
Even if your old toilet fill valve had a separate float, a newer valve with the float integrated onto the shaft will work.
Remember to also clip the new refill tube to the overflow tube.
Washers on the inside and outside of the tank ensure that there is a water-tight seal around this connection point.
Tightening the nut on the bottom of the fill valve with a wrench or pliers could crack the toilet tank or the valve.
Be careful not to overtighten the washer, or the nut could crack and the connection will leak. If you see any leaks, immediately turn the water off at the shutoff valve. When you turn the water on, the tank should start filling right away.
Look at the directions of your new toilet fill valve for exact directions for float adjustment. When positioned correctly, the top of the float should be set at about 1 inch (2. 5 cm) below the top of the overflow pipe. The goal is that the float comes up and shuts off the water before the water gets high enough to flow over the top of the overflow pipe.
