How do I clean the spray arm nozzles?

To clean the top spray arm, first remove the empty top rack and turn it upside down. The spray arm is held by a locking nut—turn it counterclockwise to remove the arm. Look for obstructions in the spray nozzles and flush them under running water if needed. For the bottom spray arm, grasp and lift it from the installed position, check for obstructions, and flush the nozzles under running water. Reinstall both arms by reversing these steps.