Yamaha BIG BEAR 400 Owner's Manual page 150

1. Do not touch the glass part of the bulb.
CAUTION:
_
Do not touch the glass part of the head-
light bulb to keep it free from oil, otherwise
the transparency of the glass, the luminos-
ity of the bulb, and the bulb life will be ad-
versely affected. Thoroughly clean off any
dirt and fingerprints on the headlight bulb
using a cloth moistened with alcohol or
thinner.
_
7. Connect the headlight coupler.
8. Place the headlight unit in the original po-
sition, and then install the screws.
9. Place the headlight assembly in the orig-
inal position, and then install the screws.
10. Connect the coupler which was discon-
nected in step "1".
11. Adjust the headlight beam if necessary.
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