Step 4 · Install the New Cartridge

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

Carefully install the new cartridge, making sure it's properly aligned with any tabs or slots in the faucet body. Push it firmly into place until it's secure. Reassemble the faucet handle and screw in the same order you removed them.