Performing proper maintenance on your garage door opener isimportant to the safety and security of your and your family. Toconduct tests and maintenance you will need a flat headscrewdriver, a ladder, a light penetrating oil such as WD-40 and apiece of scrap wood. Before beginning your maintenance andinspection of your garage door opener, disconnect the power to thedoor. Never wear loose fitting clothing or jewelry that can getcaught in the garage door mechanisms while inspecting them.Clean and Lubricate The Garage DoorPeriodically you will need to clear debris, such as dir, leavesand dead insects from the metal parts of the garage door openerwith a soft brush. Using your light penetrating oil, lubricate therive chain of the garage door opener.Adjust The Garage Door ChainWhen inspecting th