Headlight Aim - Monster 659 Owner's Manual

Headlight aim

To check the headlight aim, place the motorcycle upright
with the tyres inflated to the correct pressure and one person
sitting astride the motorcycle. The motorcycle should be
perfectly vertical, with its longitudinal axis at right angles to a
wall or screen at a distance of 10 metres. Draw a horizontal
line at the height of the centre of the headlamp and a vertical
one at the longitudinal axis of the motorcycle.
If possible, perform this check in dim light.
Switch on the low beam.
The height of the upper limit between the dark area and the
lit area must not be more than nine tenths of the height of
the centre of the headlamp from the ground.
Note
This is the procedure specified by Italian regulations for
checking the maximum height of the light beam.
Owners in other countries will adapt said procedure to the
provisions in force in their countries.
9
x
10
10 m
E
x
fig. 107
101