How to Repair a Dripping Single-Handled Faucet

A single-handled cartridge faucet is easy to disassemble. Just pry off the decorative cap on the handle, remove the handle screw, tilt the handle back and pull it off. If there's a threaded retaining clip holding the cartridge in place, use needle-nose pliers to remove it, and then pull the cartridge straight up. In Richard's case, only the cartridge needed replacing. If the O-rings are cracked, remove the spout and cut off the old O-rings using a utility knife. After coating the new O-rings with nontoxic, heat-proof plumber's grease, reassemble the unit.