Arctic Cat Sno Pro 120 Service Manual page 470

 NOTE: There should be an "average" operating load
on the snowmobile when adjusting headlight aim.
2. Measure the distance from the floor to midpoint of
the headlight.
3. Using the measurement obtained in step 2, make a
horizontal mark on the aiming surface.
4. Make a vertical mark intersecting the horizontal
mark on the aiming surface directly in front of the
headlight.
5. Engage the brake lever lock and start the engine.
Select the headlight dimmer switch HIGH beam
position. DO NOT USE LOW BEAM.
6. Observe the headlight beam aim. Proper aim is when
the most intense beam is centered on the vertical
mark 5 cm (2 in.) below the horizontal mark on the
aiming surface.
8-36
7. Adjust the headlight using the adjusting screw on the
backside of the headlight housing until correct aim is
obtained. Shut the engine off; then disengage the
brake lever lock.
PC014A