Float On Fill Valve Stem
Pinch the clip that connects to the wire that runs the length of the fill valve with your fingers and hold the clip.
Move the float up or down the fill valve in small increments to adjust the water level.
Release the clip and test the fill level. Continue making adjustments to the fill valve as necessary.
Ball Float Fill Valve
Locate the adjustment screw where the float ball arm connects to the top of the fill valve.
Turn the screw in small increments to raise or lower the fill level, using a Phillips-head screwdriver.
Grab the float arm between the fill valve and the float ball with both hands if you cannot adjust the screw. Bend the arm up or down as necessary to adjust.