Yamaha RAPTOR 700 Owner's Manual page 158

1. Do not touch the glass part of the bulb.
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Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of
the bulb, and the bulb life will be adversely
affected. Thoroughly clean off any dirt and
fingerprints on the headlight bulb using a
cloth moistened with alcohol or thinner.
6. Push the headlight bulb holder in and turn
it clockwise to install.
7. Install the headlight bulb holder cover.
8. Connect the headlight coupler.
9. Install the headlight assembly by installing
the bolts.
10. Adjust the headlight beam if necessary.
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