Step 2 · Remove the Shower Handle
Carefully remove the shower handle. For a single-lever handle, look for a small hole, often on the underside or front of the lever. This hole contains a set screw that holds the handle in place. You will need a matching Allen key (hex key) or a small Phillips/flathead screwdriver to loosen this screw. Turn the screw counter-clockwise a few turns until it is loose (it does not need to be fully removed). Once the set screw is loosened, gently pull the handle straight off the valve stem. If it's stuck, you may need to wiggle it carefully or use a handle puller tool. Avoid prying it off with a screwdriver, as this can scratch the finish.