Ducati Monster 796 Workshop Manual page 639

Flywheel - alternator
Refitting the flywheel-alternator assembly
Fit the washer (17), duly lubricated, the needle roller bearing (19), and the inner ring (18) to the crankshaft. Make sure
the inner ring is centred on the washer.
Fit the previously assembled flywheel-rotor-driven gear on the crankshaft, taking care not to alter the position of inner
ring (18) with respect to the washer (17).
The flywheel reference mark must be aligned with the groove on the crankshaft, in correspondence with the keyway.
Lubricate the contact surfaces of Belleville washer (33) with engine oil.
Fit the Belleville washer (33) on the end of the crankshaft.
Apply recommended threadlocker to the crankshaft thread and to the flywheel nut thread (34).