To install a new wiper arm, first mark the wiper park position on the windshield with a suitable non-permanent marker. Lift off the cover of the wiper arm nut, unscrew off the wiper arm retaining nut and carry off the wiper arm from the wiper transmission drive shaft. For installation, place it in line with marks drawn on the windshield and press it down onto the wiper transmission drive shaft completely. Fit the retaining nut to the wiper transmission drive shaft and the wiper arm, and torque it to 23 N.m (17 lb ft). Lastly, after inserting the washer inside the washer hole, reinstall the cover on the wiper arm nut.