Step 2 · Remove the Faucet Handle
With the water off, you can begin disassembling the faucet. First, locate the set screw that secures the handle to the valve stem. On many single-handle Moen faucets, this screw is an Allen screw located in a small hole on the underside of the handle. Use the appropriate size from an Allen wrench set to turn the screw counter-clockwise. You do not need to remove the screw completely, just loosen it enough so the handle can be pulled straight off the valve stem. If the handle is stuck due to corrosion, you may need to gently wiggle it back and forth while pulling. If there's a decorative cap on the front of the handle, use a small flathead screwdriver to gently pry it off to access a Phillips screw underneath.