Tips for installing a Korky toilet fill valve include turning the top of the valve counterclockwise and fully extending it before installation, adjusting the water level after installation and only hand tightening the supply line to the valve. Place a bucket under the supply line before removal for any drips.
Korky valves fit many different height toilet tanks, and you must adjust them to fit. Once the valve is in place, press down on the valve so the fill mark is at the toilet fill line and the critical level line on the silver top of the valve is 1 inch above the top of the overflow valve. Turn the top assembly clockwise to lock it in place. Consult the instruction manual to determine the supply line parts you must replace to connect the line, and avoid using tools or overtightening it during the installation.