Air Cleaner - Trail Boss, Xpress 300, Xplorer 300, Xplorer 400; Dual Stage Air Cleaner; Primary Pre-Cleaner Foam Boot - Polaris Magnum 2x4 Service Manual

MAINTENANCE
2 Stroke Engine 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 be-
fore 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 injection oil (1 to 2 tea-
spoons). Squeeze out the excess into an absorbant
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 securely positioned over
the main filter neck.
CAUTION: When installing the primary air filter box be
sure the gray foam collar (B) is below the intake opening
of the air box intake (A). Improper installation will re-
strict airflow to the engine possibly resulting in engine
damage.
5/98 2.22
Primary Air Filter Box
Pre-cleaner Boot
Polaris Industries Inc.