Ducati MONSTER 821 2016 Owner's Manual page 168

Adjuster (2), located on the lever, allows a maximum
value (Q) of 0.43 in (11 mm), whereas the (factory)
standard setting is 0.2 in (5 mm). If working on such
adjuster proves insufficient, work on the secondary
adjuster (3).
Attention
In case of a slipping clutch due to clutch wear,
adjuster (2) on the lever must NEVER be loosened,
but screwed, as described above.
If the clutch is still slipping, go to a Dealer or a Ducati
Authorized Service Center.
166
3
Q
2
Fig 86