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1.
Park tractor on a level surface with headlights (A) 7.5 meters (25 ft) from a vertical wall.
2.
Measure the distance (B) from the center of a headlight to the ground.
3.
Mark a horizontal line (C) on the wall, the same distance from the ground as (B).
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4.
Set headlights on low beam and observe bright areas on the wall.
5.
Adjust headlights so the upper border of bright area (D) is at least 10% of distance (B) below line (C). (See Adjusting Headlights in this section.)
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