How do you replace a moen single handed faucet cartridge?

To replace a Moen single-handle faucet cartridge, first, turn off the water supply and open the faucet to relieve pressure. Use a flathead screwdriver to pry off the handle's decorative cap, then remove the handle screw and lift off the handle. Next, use pliers to pull out the cartridge, and install the new cartridge by sliding it into place. Finally, reassemble the faucet by reversing the steps and turn the water supply back on to test for leaks.