Air Filter / Pre-Filter Service - Polaris 2009 Sportsman XP 850 Service Manual

Air Filter / Pre-Filter Service

It is advisable to replace the filter when it is dirty. However, in
an emergency, it is permissible to clean the main filter if you
observe the following practices.
• Never immerse the filter in water since dirt can be
transferred to the clean air side of the filter.
• If compressed air is used never exceed a pressure of 40
PSI. Always use a dispersion type nozzle to prevent
filter damage and clean from the inside to the outside.
It is recommended that the air filter and pre filter be replaced
annually. When riding in extremely dusty conditions,
replacement is required more often.
Removal:
1. Remove the seat to access the airbox cover.
2. Unscrew the two knobs retaining the airbox cover and open
the cover.
3. Remove the air filter assembly from the airbox.
Cleaning:
4. Slip the pre-filter screen off of main element. Clean the pre-
filter with hot soapy water.
5. Rinse and dry thoroughly.
6. Inspect pre-filter screen for tears or damage.
7. Inspect main filter and replace if necessary. If the filter has
been soaked with fuel or oil it must be replaced.
Installation:
8. Inspect airbox cover seal for damage. It should adhere
tightly to the cover and seal all the way around. Replace
seal as needed.
9. Reinstall pre-filter screen over main filter. Be sure the
screen covers entire surface of main filter without folds,
creases, or gaps.
NOTE: Apply a small amount of general purpose grease
to the sealing edges of the filter before reinstalling.
10. Install air filter assembly into the airbox and position it
correctly before closing the airbox cover.
NOTE: Proper placement of the air filter is important to
prevent air leaks.
11. Close airbox cover and secure cover by tightening the
retaining knobs.
12. Check the intake boot for cracks, deterioration, abrasion, or
leaks. Replace as needed.
MAINTENANCE
2.11
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