1997 Mercury Mountaineer Owner's Manual - Page 157

Maintenance and care To make reaching the wiper blades easy, simply turn the ignition to the ON position and turn the wipers on. Wait for them to reach a vertical position and turn the ignition to LOCK. Do not move the wipers manually across the windshield as this may cause damage to the wipers. Inspect the wiper arm pivots on a regular basis to ensure that the wiper arms move freely. Lubricate the pivot points as necessary. Replacing wiper blades If the wiper blades do not work properly after cleaning, replacement of the blade assembly or the blade element may be necessary. There are two different length wiper blades on your vehicle. The windshield wiper blades are 45 cm (17.75 in) long and the liftgate wiper is 34.9 cm (13 3/4 in) long. Make sure you install the correct size wiper blade in the correct location. To replace windshield wiper blades: 1. Pull the wiper 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 the new wiper blade by pulling wiper mounting arm down 157