Hi Ronald, Thank you for your question. To access the diverter you will have to remove the spout. First step is shutting off the water supply to the faucet. Next, grab the base of the spout and unscrew in a counter-clockwise direction. Slide up the spout base and then pull up on the spout to remove it from the faucet body. Use a coin to unscrew the diverter from the faucet body. You can soak the diverter in a 50/50 solution of vinegar and water to clean the part.