1998 Buick Park Avenue Owner's Manual - Page 312

For the vertical. adjustment, state inspection stations generally wiJl allow a reading of plus 0.76 degrees or minus 0.76 degrees from the center of the bubble. ... It is recommended that the upper limit not exceed plus 0.4 degrees from the center of the bubble. Other drivers may flash their high beans at you if your adjustment is much above plus 0.4 degrees. The headlamp aiming device is under the hood, directly behind the headlamps. If you find that the headlamp aimingneeds adjustment, follow these steps: Stat with the vertical headlamp aim. Adjustment screws can be tannedwith an E8 Torn@socket or T 5 Tom screwdriver. I 1. Check the vertical aim for each headlamp (A). The vehicle must be on a Bevel surface. Turn the vertical aiming screw (B) until the bubble in the levelis lined up with the 0 (zero).