Ducati MONSTER 821 Workshop Manual page 1083

Fit the flange (11) with starter clutch fully home into the flywheel (13), ensuring the centring hole (C) on
flange matches the flywheel centring hole (D).
Insert a pin or a wrench inside rotor flywheel hole (E) so as to align flywheel holes with flange threads.
This precaution can prove useful as flange is mounted by a forced interference fit and holes cannot thus be
aligned after flange is fitted inside flywheel.
Aim flange so that the side with the chamfered edge is facing the flywheel.
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