1997 Ford F150 Owner Guide 1st Printing - Page 181

Maintenance and care 1. Pull the arm away from the windshield and lock it into the service position. 2. Turn the blade at an angle from the wiper arm. Depress lock tab and push wiper mounting arm away from wiper blade assembly. 3. Attach new wiper blade by pulling wiper mounting arm down on wiper blade until lock tab is engaged. TIRES Information about tire quality grades New vehicles are fitted with tires that have their Tire Quality Grade (described below) molded into the tire's sidewall. These Tire Quality Grades are determined by standards that the United States Department of Transportation has set. Tire Quality Grades apply to new pneumatic tires for use on passenger cars. They do not apply to deep tread, winter-type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches or limited production tires as defined in Title 49 Code of Federal Regulations Part 575.104(c)(2). U.S. Department of Transportation-Tire quality grades: The U.S. Department of Transportation requires Ford to give you the following information 182