How To Replace A Two Handle Bathtub Faucet Cartridge References. For a cartridge faucet with one handle: The process is the same whether you have a single handle faucet or one with multiple controls.

3 wrap a piece of friction tape around the packing nuts on top of the. Use an allen wrench or small screwdriver to remove the screw, then carefully use your hand or pliers to remove the handle of the faucet. Pull the cartridge straight up to remove it from the faucet body.