Turn off the main water supply to prevent water flow during the repair.
Open the leaking shutoff valve to relieve any pressure and drain residual water.
Use a flathead screwdriver to remove the screw holding the valve handle in place.
Pull off the handle to expose the packing nut underneath.
Use an adjustable wrench to loosen the packing nut without removing it completely.
Inspect the packing material around the valve stem for wear or damage.
Remove old packing material using pliers or a small screwdriver if necessary.
Wrap new packing string around the valve stem or insert a new packing washer.
Apply a small amount of plumber's grease to the stem to ensure smooth operation.
Re-tighten the packing nut securely with the adjustable wrench.
Reattach the valve handle and secure it with the screw.
Turn the valve on and off a few times to ensure smooth movement.
Turn the main water supply back on slowly.
Check the valve stem area for any signs of continued leaking.
If leaking persists, slightly tighten the packing nut further.
Wipe the area dry with a rag to monitor for new leaks.
Do not overtighten the packing nut to avoid damaging the valve.
Ensure the valve is functioning properly without resistance.
Clean up any tools and materials used during the repair.
Monitor the valve over the next day to confirm the leak is resolved.
