Things You'll Need
Replacement spray head
Most, but not all, sinks come equipped with a built-in sink sprayer. If that is the case with your sink, you can purchase a hose and sprayer head and attach it to the end of your faucet. You can use the sink sprayer for just about anything that requires water, including washing and rinsing food and cleaning dishes and the sink itself. After lots of daily use, many sink sprayers develop a buildup of mineral deposits and become clogged or the hose cracks or leaks. That's when it's time to remove the sprayer from the faucet and replace it with a new one.
Turn the water supply off at the sink.
Unscrew the sprayer head from the attached hose. Turn it counterclockwise to remove it. If mineral deposits around the threads of the sprayer head made it difficult for you to pull off, soak the sprayer head in a 50-50 solution of white vinegar and water.
Check the diverter valve on the spray head while you have it off. Look for rust or corrosion on the diverter valve to determine if it is causing low water pressure through the spray head aerator.
Unscrew the hose from the faucet lip and drain it. Examine the hose for cracks or leaks. Look all up and down the length of the rubber hose to make sure it's in good condition.
Reinstall the hose on the faucet if it is in good working condition by screwing it back on. If it's not, replace it with a new hose.
Reinstall the spray head to the hose by screwing it back onto the hose. If it is too damaged from mineral deposits, replace it with a new hose.
If the sprayer head has so much mineral deposits on it that you can't remove it, use adjustable pliers to remove it. Grip it around the nut on the sprayer, and turn countercolockwise to remove. You might want to put tape over the head of the sprayer first to avoid damaging the head with the pliers.
Placing a sliding weight on the new hose will help prevent tangles.