Ducati Scrambler 1100 Owner's Manual page 205

Aligning the headlight
The vertical alignment of the headlight can be
manually set by turning screw (1).
Important
Headlight beam adjuster screw has no limit
stop.
Warning
The headlight might fog up if the motorcycle is
used under the rain or after washing. Switch headlight
on for a short time to dry up any condensate.
204
1
Fig. 174