Ducati Diavel Workshop Manual page 68

Maintenance operations
Changing and cleaning the air filters
The air filter must be replaced at the intervals described in the
Operations
Refit the seat
Remove the tank covers
Remove the fuel tank
Remove the exhaust
Work on the vehicle right side, loosen screws (1) that secure the intake duct (2) to the filter box, and the radiator
retaining screw (3); recover the washer (4).
Remove the intake duct (2).
Pull out the filter cartridge (5) from the seat in the airbox.
The filter cartridge can be cleaned with a jet of compressed air or replace if necessary.
Important
A clogged air filter will reduce air intake and engine power, increase fuel consumption and cause a build up of deposits on
the spark plugs. Do not use the motorcycle without a filter as impurities in the air could get into the engine and cause
damage.
Properly refit the cartridge in the filter box housing.
If the gasket (6) has been replaced, refit the new gasket in the proper seat (A) of the conveyor (2); place it so that the
Section reference
5 - 3, Refitting the seat
5 - 2, Removal of the fuel tank
fairings
8 - 2, Removal of the fuel tank
8 - 8, Removal of the exhaust
system
"Scheduled maintenance chart" (Sect. 4 - 2).