1996 Buick Riviera Owner's Manual - Page 265
1996 Buick Riviera Manual
Page 265 highlights
I NOTICE: . . ' To make sure your headlamps are aimed properly, read all the instructions before beginning. Failureto follow these instructions could cause damage to headlamp parts. It isrecommended that the upperlimit not exceed plus 0.4 degrees from the centerof the bubble. Other drivers may flash their brightlights at you if your adjustmentis much above plus0.4 degrees. 6-36
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