Have a drip in the faucet. Have disassembled down to removing the retaining clip and can't see how to remove the cartridge. Appears the collar diverter should screw off,but does not.What do I remove to remove
The cartridge?

With all moen cartridges you PULL on the cartridge once that clip has been removed. Try using a pair of pliers on the cartridge. If that fails, screw the handle back on and try pulling the cartridge out using the handle.

Finally, if that fails, moen makes a cartridge puller... sold at most plumbing supply stores and even many home improvement stores (just call and ask before going there).

Hope that helped!

Mark