Step 4 · Install the New Tub Spout
Take the new replacement tub spout and ensure the setscrew is loose enough to allow the spout to slide over the pipe. Align the spout and slide it onto the copper pipe until its base is completely flush against the finished wall. Make sure the diverter pull-knob is facing up and the setscrew opening is facing down. Hold the spout firmly against the wall and use the Allen wrench to tighten the setscrew clockwise until it is snug. Do not overtighten, as this can crimp or damage the copper pipe. Give the spout a gentle tug to confirm it is secure.