I have replaced the cartridge on my single faucet single handle moen kitchen tap, but water still leaks out under the central area that holds the cartridge. Is there a schematic that shows where and what washer rings should be located.

first the water needs to be shut off, then with an allan wrench if i remember it should be 1/8. the allan screw is located in the handle. remove the screw completely and under the handle should be a nut, with a crescent wrench remove the nut and the cartridge should be ready to be removed. it is going to be difficult to come out with out the proper moen tool but vise grips will help as you have to pull straight up. if you find a plumping wholesale and give them the model # they should be able to give you the right cartridge. or if you call moen the will ship you one either way it should be free as that is a warranty item.

Cartridge removal is a simple matter of exposing and pulling out the old cartridge. Before getting started, turn off both water valves underneath the sink and allow the water to run until the line is clear. Using a screwdriver, gently pry off the cap on the lever of the faucet handle to expose the cartridge. Remove the U-shaped retaining clip that holds the cartridge in place and pull the cartridge out. If dirt or residue makes removal difficult, use a Moen cartridge puller to assist you. A cartridge puller fits over the cartridge and gives you greater pulling power.

Soak the dirty cartridge in vinegar for four hours and replace.

If cleaning the cartridge does not work, call the Moen Helpline at 1-800-465-6636 or Customer Service at 1-800-465-6130 to order a free replacement. Locate the part number on the cover page of your instruction manual. If you no longer have the manual, look on the underside of the spout.

The water supply should have no bearing on the working motion of the faucet cartridge or handle. On both models of Moen faucet, the handle needs to be hooked under the cartridge's top cam bearing. It is a bit tricky sometimes. Here's the parts view for 7300 and 7310 Moen Kitchen faucet. Parts view for 7100 Moen.
If you need further assistance please let us know.

if memory serve's me,you will need to remove a stem extension,screw in center,and you may need a tool #103462 to remove cartridge.1'st stem ex't is red,(hot) blue (cold), remove, look down,white piece w/ 2 notch'es, this hold's cartridge down, ya might try needle nose plier's to remove,a little lube help's upon re assembly, carefull w/plastic thread's

Hot water line connected to left side of faucet? Did you replace tap set, or just cartridge? Cartridge may be out 180 degrees.

You need to get the assembly back together properly there is a notch that needs to lock on cartridge area

turn off water remove handle and check retaining nut remove cartridge and check o-rings for damage or replace replace and tighten cartridge check for leak

ur cartridge needs service or replacement u can turn off water supply remove lever and retaining nuts pull up cartridge and inspect the o rings for debris and or damage if good inspect cartridge for damage if looks check gaskets/o-rings in stem for same add a little vasline around o-rings and reinstall test for leak if leaking still replace all o-rings or if cartridge order and replace

There will be a set screw on back or under cap on top. Remove handle, next use a phillips screw driver to remove the part that holds on to the cartridge. Then a bonnet that unscrews leaving the cartridge easily repaired or replaced. And there you have it.

Yes, a cartridge will probably solve it. There are two different Moen cartridges so be sure to take the old one with you so you get the correct one.