Ducati SPORT 1000 Manuel D'utilisation page 117

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 is air in the circuit. Contact your Ducati
Dealer or an Authorised Workshop to have the system
inspected and air drained out.
Warning
Clutch fluid level will increase as clutch plate friction
E
material wears down. Do not exceed specified level
(3 mm above minimum level).
42
fig. 33
fig. 34