How should I adjust the dishwasher door tension if it closes too quickly?

To decrease spring tension, unhook the spring from the rear leg of the dishwasher. Using a 1/4 inch nut driver or hex socket, remove the screw from the tensioner. Move the tensioner to a higher number hole (1, 2, or 3) and replace the screw. Reattach the door spring to the rear leg. Make sure tensioners on both sides of the dishwasher are secured at the same holes. (Page 17)