Honda Civic Service Manual page 1642

Headlights
Adjustment (cont'dl
Turn the low beams on.
Determine if the headlights are aimed properly.
Vsrtical adiustmsnt:
Measure the height of the headlights (A). The lights
should reflect 52 mm \2.1 in.) below (B) headlight
height.
Horizontal adi$tment:
The width of the refracting points (C) should be the
same as the width of the headlight central points (D,
23-170
7. lf necessary, adjust the headlights to local require-
ments by turning the horizontal adjuster (A) and the
vertical adjuster (B).
After headlight replacement, it may be necessary to
readjust the horizontal indicator gear.
. First installthe headlight, and adjust its horizontal
and vertical aimings according to local require-
ments.
. Then check that the arrow on the horizontal indi-
cator gear is aligned with the mark on the hori-
zontal indicator,
-
lf they are not aligned, remove the screw, adjust
the indicator gear, and retighten the screw.
NOTE: As the outer lenses are made of an acryli-
coated, polycarbonated material, do not cover the
headlights when they are turned on.