There are generally two causes of water leaking from your moen faucet.
Moen single handle kitchen faucet troubleshooting repair guide.
Then remove the dome see photos which should just slide up and off.
To remove the handle flip open the little red blue plastic nib on the side of the handle see video.
Single two handle the series number may be stamped on the back side of the spout near the base where it swivels on the sink.
Because pull out spray faucets have a single handle the most common cause of the water leaking is the o ring.
If you point your spout aerator where the water comes out so that it is facing the 3 o clock position the series number should be located on the opposite side at the 9 o clock position.
If you re involved with a moen kitchen faucet repair and the faucet has only one handle the job will entail taking the faucet apart.