Use a pair of pliers to remove the clip that holds the cartridge in place. Be careful to keep a good hold on the clip so it does not fall into the wall. This clip will be reused when the new cartridge is installed.
By Aaron Stickley, About.com Guide
Use a pair of pliers to remove the clip that holds the cartridge in place. Be careful to keep a good hold on the clip so it does not fall into the wall. This clip will be reused when the new cartridge is installed.