How do you tighten a moen faucet?

To tighten a Moen faucet, first, turn off the water supply and open the faucet to relieve any pressure. Use an adjustable wrench or a basin wrench to tighten the mounting nut underneath the sink, which secures the faucet to the countertop. Check for any loose screws on the handle and tighten them as needed. Finally, turn the water supply back on and test the faucet for leaks to ensure it is securely tightened.