I have a single source Moen water faucett in my bathroom and it is leaking. I am lost on how to fix it. I am assuming it is a tap washer or an O ring but I have never come across this set up before. How would I change something like that? Help company is on the way.
If the faucet is a tub/shwr valve the it uses a cartridge. Buy a new cartridge and inside the package you will find complete instrictions on replacing that cartridge. John.