Ducati MONSTERS4R Manuel De L'utilisateur page 121

Changing air filter (fig. 45)
Replace the air filter at the required intervals shown in
the routine maintenance chart (see Warranty Card) . The
air box is accessible after lifting the fuel tank as
described on page 45.
To remove the filter, release the cover clips (1) on both
sides of the air box and take off the cover (2).
Remove the filter cartridge (3, fig. 46) and fit a new one.
Important
E
A clogged filter will reduce air intake, increase fuel
consumption, reduce engine power, and foul the spark
plugs. Do not use the motorcycle without filter or
suspended matters could get into the engine and cause
damage.
Install the filter into the seat in the air box as shown in
the figure and refit all the parts you have removed.
Important
If you are using the motorcycle on dusty or very
wet roads, replace filter more frequently than
recommended intervals shown in the routine
maintenance chart (see Warranty Card).
46
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1
2
fig. 45
3
fig. 46