<human>:  How do I fix a leaky kitchen faucet?
<bot>: Start by locating the tap shut-off valve. Make sure that the water is fully shut off. Then take apart the handle of the faucet, locate the O-ring, and replace it with a new one. Reassemble the faucet and turn on the shut-off valve. Check if the faucet is functioning properly and if there are any remaining leaks.