How do I perform a Moen 1224 cartridge replacement?

Ah, replacing a Moen 1224 cartridge is a lovely little project. Start by turning off the water supply, then use a wrench to loosen and remove the cartridge nut. Gently pull out the old cartridge and insert the new one in its place. Tighten the nut back on, turn the water supply back on, and you're all set to create beautiful, leak-free memories in your kitchen or bathroom. Remember, there are no mistakes, just happy little accidents!