While a gear puller can be helpful for stubborn faucet handles or cartridges, standard pliers or a screwdriver often suffice for removal. A torque wrench is typically unnecessary for residential faucet cartridges; hand-tightening followed by a snug turn with a crescent wrench is usually adequate.

Always turn off the main water supply valves located directly under the sink for the specific faucet you're working on. After turning off the water, open the faucet briefly to relieve any residual water pressure and drain remaining water from the lines.

For a stuck handle, try applying penetrating oil around the base and letting it sit for a few minutes before attempting removal with a gear puller or pry tool. If the cartridge is stuck, ensure you've removed all retaining clips or nuts, and consider using a cartridge-specific puller if available for your faucet model.

For a beginner, this project typically takes 30-60 minutes, assuming you have the correct replacement part and encounter no major complications. The cost is primarily for the new cartridge, usually ranging from $10 to $40, making it a very cost-effective repair.