Step 2 · Disconnect Water Supply Line

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

Position a small bucket or towels directly under the point where the water supply line connects to the bottom of the toilet tank's fill valve. Using an adjustable wrench, grip the coupling nut on the supply line. Turn the nut counter-clockwise to loosen and disconnect it from the tank. A small amount of water may drip out, which the bucket or towels will catch.