Customer Questions and Answers for Dishwasher Middle Spray Arm by Whirlpool

Mac, the spray arm lock nut would need to be rotated before pulling the spray arm away from the manifold.

Norman, the spray arm can be cleaned using a pipe cleaner or straw brush while rinsing in the sink. However, it is common for the debris to not clear from the inside of the spray arm, and replacing it can often be the most efficient repair.