Slide the dishwasher straight out from the wall a few inches. Lower the dishwasher door. Locate the mounting bracket screw holes in the top edge of each side of the dishwasher.
Line up the holes in the mounting brackets supplied with your dishwasher with the screw holes located previously. Secure the brackets by driving in the retaining screws provided, with a Phillips screwdriver.
Slide the dishwasher back into the opening under the countertop.
Drive self-tapping screws through the horizontal mounting holes in the brackets into the underside of the countertop with a Phillips screwdriver. Ensure the screws used are not longer than the thickness of your countertop.
Close the dishwasher door.