Ducati MONSTER 1200 Owner's Manual page 255

- spring preload: 14 mm (0.55 in).
Warning
To turn the preload adjuster ring nut use a pin
wrench. Pay attention to avoid hand injuries by hitting
motorcycle parts in case the wrench tooth suddenly
slips on the ring nut groove while moving it.
Warning
The shock absorber is filled with gas under
pressure and may cause severe damage if taken apart
by unskilled persons.
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