How do I remove and clean the spray arms?

For the lower spray arm, check that water jet holes are not blocked by food particles and remove any residue with a pin or stiff wire. For the upper spray arm, pull the upper rack forward, turn the nut on the bottom counter-clockwise, pull down, rinse or shake the spray arm to remove food particles, then press it back up and turn the nut clockwise to lock it into place. It is recommended to clean spray arms once every two weeks.