Ducati MH900 evoluzione Manuel De L'utilisateur page 111

Beam setting (fig. 49)
When checking for proper beam setting, put the
motorcycle upright. Tyres should be inflated at the
correct pressure and one person should be sitting astride
the motorcycle, keeping it at right angles to its
longitudinal axis and opposite a wall or a screen, 10
metres apart from it. Then draw a horizontal line dictated
by headlamp centre and a vertical one in line with the
longitudinal axis of motorcycle.
If possible, perform this check in dim light.
Switch on the low beam:
the height of the light spot (measured at the upper limit
between dark and lighted-up area) should not exceed
9/10th of the height above ground of headlamp centre.
Note
The procedure described here is in compliance with
the "Italian Standard" establishing the maximum height
of the light beam.
Owners in other countries will adapt said procedure to
the provisions in force in their countries.
The height of the light beam can be corrected using the
headlamp top mounting screw (1, fig. 50). Remove the
headlight fairing to expose the screw (see page 33).
Slacken screw and set headlamp angle as required.
E
fig. 49
1
fig. 50
45