Moen Kitchen Faucets
Turn the water off under the sink. Locate the locking hardware, which is a round collar, underneath the faucet. Loosen the collar by unscrewing the nut with pliers, and remove the collar. Disconnect the faucet hoses from the two water pipes under the sink and lift the faucet off the sink base. Scrape off the plumber's putty from the sink top with a plastic scraper.
Moen Bath Faucets
Turn off the water by closing both water valves under the sink. Remove the mounting hardware under the sink with a wrench. Use a basin wrench to reach up and into the cabinet where the sink lock nuts are located. Once you remove all the mounting hardware, disconnect the faucet hoses by unscrewing the connectors. Unscrew the bracket on the sink drain pull rod, and pull out the handles and spout.
Shower and Bath Faucets
Shower faucets install into the wall of the shower. Shut off the home's main water line by turning the valve on the incoming water pipe to the closed position. Unscrew the set screw at the base of the Moen faucet with an Allen wrench and pull the handle off. Take off the cap cover under the handle by unscrewing it and pulling it off. Remove any adapters on the cartridge by unscrewing them, and then pull out the Moen cartridge. (Not all Moen faucets have an adapter, but some do.) Unscrew and remove the faucet baseplate with a screwdriver.
Double-Handle Moen Faucets
Moen makes both double-handle and single-handle faucets. When removing any double-handle faucet always remove each handle separately. This goes for both bath and kitchen faucets. Disconnect the water lines running to both handles, and remove both lock nuts. If the handles install separately without a connecting base plate, one handle can be removed at a time, while the other is left in place. However, this means the spout uses its own hardware to mount to the sink. Removing this hardware is necessary to remove the spout.