Ducati SPORT TOURING Owner's Manual page 32

Warning
Use a specific pin wrench only to turn the preload
adjusting ring nut. Be careful when turning the nut with
the wrench, as the pin may slip out of the nut recess and
you may hurt your hand hitting motorcycle parts.
Important
The shock absorber is filled with gas under
pressure and may cause severe damage if taken apart by
unskilled persons.
E
When carrying a passenger and luggage, set the rear
shock absorber spring to proper preload to improve
motorcycle handling and keep safe clearance from the
ground. You may find that rebound damping needs
adjusting as well.
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