BMW 61617253386 Windshield Wiper Arm

The wiping performance is much better if the angle between the wiper blade and the plane of the windshield is correct and this is determined by the twist position of the wiper arm. First, remove the wiper blade off the wiper arm pin. When removing the wiper blade it should not be allowed to swing back on the wiper arm with a bang on the windshield. Then insert the BMW special tool 61 6 100 onto the wiper arm pin and align it with the windscreen then read the degree on the scale. If the angle was applied incorrectly, then utilizing the BMW special instructions of tool set 61 6110 one should twist the wiper arm to the proper wiper blade contact angle.