Locate and turn off the shutoff valves for both hot and cold water supplies to prevent leaks during removal.
Open the faucet to release any remaining water in the lines and drain it into a bucket or drain.
Use an adjustable wrench to disconnect the supply lines from the faucet or shutoff valves.
Remove any clips, brackets, or mounting hardware holding the sink in place using a putty knife or screwdriver.
Carefully lift the old sink out of the countertop, supporting it to prevent damage or injury.
Clean the surface of the countertop thoroughly to remove old sealant, debris, and residue for a proper seal.
Apply a bead of plumber's putty around the drain opening on the new sink to create a watertight seal.
Insert the drain assembly into the drain opening, tightening it securely from underneath.
Position the new sink into the countertop cutout, ensuring it fits properly and is level.
Secure the sink in place with clips or mounting brackets, tightening them evenly to avoid stress on the sink.
Reconnect the supply lines to the faucet or shutoff valves, tightening fittings with an adjustable wrench.
Apply a continuous bead of silicone sealant around the perimeter of the sink where it contacts the countertop to prevent leaks.
Turn on the water supply valves slowly, checking for leaks around connections and drain areas.
Run water through the faucet to verify proper drainage and that no leaks are present.