Moen Bathroom Faucet Single Handle Repair

A leaky faucet can be a major annoyance, not to mention a waste of water. If you're dealing with a Moen bathroom faucet that has a single handle, repairing it is a relatively simple task that you can do yourself with a few basic tools. Here's a step-by-step guide to help you get the job done.

Tools and Materials You'll Need

Phillips head screwdriver
Allen wrench
Replacement cartridge (if necessary)
Plumber's putty
Rags

Step-by-Step Repair Instructions

1. Turn Off the Water Supply

Before you start working on the faucet, make sure to turn off the water supply to the bathroom. There should be two shut-off valves under the sink, one for hot water and one for cold water. Turn both valves clockwise until they are completely closed.

2. Remove the Handle

Use a Phillips head screwdriver to remove the screws that are holding the handle in place. Once the screws are removed, the handle should come off easily. If it doesn't, you may need to use a little bit of force.

3. Remove the Cartridge

Once the handle is removed, you will see the cartridge. It is held in place by a C-shaped clip. Use an Allen wrench to loosen the clip and remove it. Then, pull the cartridge straight out of the faucet body.

4. Inspect the Cartridge

Once the cartridge is removed, inspect it for any damage. If the cartridge is damaged, it will need to be replaced. You can purchase a replacement cartridge at your local hardware store or online.

5. Install the New Cartridge

If the cartridge is not damaged, you can simply reinstall it. To do this, insert the cartridge into the faucet body and push it in until it is fully seated. Then, replace the C-shaped clip and tighten it with the Allen wrench.

6. Reinstall the Handle

Once the cartridge is installed, you can reinstall the handle. To do this, simply align the handle with the faucet body and push it on until it is fully seated. Then, replace the screws that are holding the handle in place.

7. Turn On the Water Supply

Once the handle is installed, you can turn on the water supply to the bathroom. Check for any leaks around the faucet. If there are any leaks, you may need to tighten the C-shaped clip or the handle screws.

Additional Tips

If your Moen bathroom faucet is still leaking after you have followed these steps, there may be a problem with the faucet body itself. In this case, you will need to call a plumber for assistance.
If you are not comfortable working on your own faucet, you can always call a plumber to do the repair for you.
Moen faucets come with a lifetime warranty. If your faucet is still under warranty, you can contact Moen for a free replacement.