Replacing a spay head is a super easy fix that anyone can do. Put a stopper in your drain so that nothing can fall into it. Spray heads unscrew by hand. Do not use any tools to remove a spray head as you will likely damage the finish. Be sure to catch the rubber O-ring when unscrewing the spray head. Clean the O-ring and make sure it is free of debris before installing the replacement spray head. Make sure O-ring is seated properly and hand screw the replacement spray head into place. Voila, your finished!