Ducati MONSTER 821 Workshop Manual page 1077

Connect the generator cable connector to the main wiring (A).
Refit the gearchange mechanism (Refitting the gearchange
mechanism).
Refit the front sprocket cover (Refitting the front
sprocket).
Change the engine oil (Changing the engine oil and filter
cartridge).
Refit the left lower cover and release wirings (Separating the crankcase
halves).
Refit the cooling system hoses (Refitting cooling system hoses and
unions).
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