Mercury 1996 Sable Manual page 346

Horizontal aim adjustment
1. Open the hood and locate the horizontal
indicator and adjusting screw.
2. Use a 4mm wrench to turn the horizontal
adjusting screw until the reference mark on
the reflector extension aligns with the "0"
reference mark on the horizontal indicator
when viewed from directly above. If the
vehicle has been in an accident requiring the
front end of the vehicle to be repaired, the
horizontal indicator should be recalibrated
by a servicing facility using the Taurus/Sable
Service Manual instructions.
Vertical aim adjustment
1. With the hood open, locate the bubble level
vertical aim indicator. It is visible when
viewed from above and to the rear of the
headlamp.
2. With the vehicle on a level surface, use a
4mm wrench to turn the vertical aim
adjustment screw (outboard screw) located
on the back of the lamp assembly clockwise
or counterclockwise until the bubble in the
spirit level is centered when viewed from
directly above the bubble.
3. Close the hood.
If the vehicle is on a downward or upward
slope of not more than 1.2˚, the VHAD's bubble
level can be used to correct for the effects of the
surface slope, provided that the slope is
accurately known.
Each graduation of the bubble level represents
0.19˚ of downward or upward slope. To correct
for the effects of a surface slope, turn the
vertical aim adjustment screw until the bubble is
centered at a position corresponding to the slope
of the surface.
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