Ducati Diavel Workshop Manual page 69

Maintenance operations
tab (B) of the gasket (6) matches with slot (C) of the RH conveyor (2) as shown in the figure.
Note
Check for no abnormal wrinkles during gasket fitting.
Start the screws (1) and screw (3) with washer (4).
Tighten the screws (1) to a torque of 3.5 Nm ± 10% (Sect. 3 -
Nm ±10% (Sect. 3 - 3,
Important
If the motorcycle is used in very damp or dusty conditions, the air filter cartridge must be changed more frequently.
Check the air filter in the horizontal timing belt cover.
Loosen the screws (8) securing the central external cover (9) and remove it from the central side.
Frame torque settings).
3Frame torque settings) and screw (3) to a torque of 10