Clutch System - Ducati Diavel Owner's Manual

Clutch system

If the control lever has exceeding play and the transmission
snatches or jams as you try to engage a gear, it means that
there might be air in the circuit. Contact your Ducati Dealer
or authorised Service Centre to have the system inspected
and air drained out.
Warning
The clutch fluid level in the reservoir tends to rise as
the friction material on the clutch plates wears out. Do not
exceed the specified level (3 mm above the minimum level).
E
147