Turn off the water supply to the outdoor faucet
Open the faucet to drain any remaining water
Inspect the faucet for leaks, cracks, or corrosion
Remove the handle screw and take off the handle
Remove the packing nut with a wrench
Pull out the stem assembly
Replace the washer, O-rings, and any worn seals
Clean mineral buildup from the faucet parts
Reassemble the stem, packing nut, and handle
Tighten all connections securely
Turn the water supply back on
Check for leaks and tighten or replace parts as needed
Replace the entire faucet if the body is cracked or badly corroded