Step 1 · Preparation and Safety

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

Begin by preparing the work area for a safe and clean project. Clear everything from the under-sink cabinet. Turn off the hot and cold water supply by twisting the shutoff valves clockwise until they stop. Turn the faucet on to release any remaining pressure and water in the lines. Place a bucket and some old towels under the drain pipes (P-trap) to catch any residual water during disassembly. If there is a garbage disposal, disconnect it from the power source. If it's hardwired, turn off the corresponding circuit breaker at the main electrical panel.