Turn the water supply back on slowly. Check for any leaks around the fill valve and supply line connections. Adjust the fill valve height as needed to achieve the correct water level in the tank (usually about ½ inch below the overflow tube).
Step 5 · Test and Adjust the New Fill Valve
Turn the water supply back on slowly. Check for any leaks around the fill valve and supply line connections. Adjust the fill valve height as needed to achieve the correct water level in the tank (usually about ½ inch below the overflow tube).
