Remove the lock nut securing the old fill valve to the bottom of the tank using an adjustable wrench or pliers. Gently lift out the old fill valve. Inspect it to understand the cause of the malfunction.
Step 3 · Remove the Old Fill Valve
Remove the lock nut securing the old fill valve to the bottom of the tank using an adjustable wrench or pliers. Gently lift out the old fill valve. Inspect it to understand the cause of the malfunction.
