First remove the Handle. remove the plastic
cover and remove the screw.
Note if you are repairing a Moen Kitchen faucet,
you will need an Allen wrench key 7/16" to
remove a set screw located behind the little
Moen nameplate, or just a blue and red hold
cover, this can be removed with your thumb nail,
once removed insert the Allen wrench and turn it
counter clockwise till the handle is loose
enough to lift off of the cartridge stem.