Polaris Offroad Vehicle Owner's Manual page 105

MAINTENANCE
Air Cleaner
Trail Boss, Xpress 300,
Xplorer 300, Xplorer 400
Dual Stage Air Cleaner
The Polaris ATV is equipped with a
dual stage engine air filtration system.
The primary pre-cleaner foam boot is
designed to remove the majority of
dust particles before they reach the
secondary dry filter element.
Primary Pre-cleaner Foam Boot
Inspect the primary air cleaner boot
daily or on a regular basis depending
on running conditions and dust.
1. Remove the ATV seat.
2. Remove the primary air filter box.
3. Remove the yellow pre-cleaner
foam boot, held in place by a gray
collar, from the air box. Do not re-
move the collar.
4. Carefully wash the yellow foam
boot in soapy water and dry it.
5. Oil the foam boot with engine injec-
tion oil (1 to 2 teaspoons).
Squeeze out the excess into an ab-
sorbant cloth.
6. Reinstall the yellow foam boot onto
the air filter box.
7. Reinstall the primary air filter box
removed in step 2. NOTE: There
will be some resistance. Be sure
the black rubber sealing ring is se-
curely positioned over the main fil-
ter neck.
CAUTION: When installing the prima-
ry air filter box be sure the gray foam
collar (B) is below the intake opening of
the air box intake (A). Improper instal-
lation will restrict airflow to the engine
possibly resulting in engine damage.
95
Primary Air Filter Box
Pre-cleaner Boot
Main Filter Neck
B
A