Polaris Sportsman 400 Service Manual page 51

AIR FILTER PRE-FILTER SERVICE
It is recommended that the air filter and pre filter be replaced
annually. When riding in extremely dusty conditions re-
placement will be required more often.
The pre filter should be cleaned before each ride, using the
following procedure.
1. Lift up on the rear of the seat.
2. Pull the seat back and free of the tabs. NOTE: When
reinstalling seat, make sure the slots in the seat engage
the tabs in the fuel tank.
3. Remove clips (6) from air box cover and remove cover.
Inspect the gasket. It should adhere tightly to the cover
and seal all the way around.
4. Loosen clamp and remove air filter assembly.
Cleaning
5. Slip the pre-filter element off of main element. Clean
the pre filter with high flash point solvent, followed by
hot soapy water.
6. Rinse and dry thoroughly.
7. Inspect element for tears or damage.
8. Apply foam filter oil or clean engine oil and squeeze
until excess oil is removed.
9. Inspect main element and replace if necessary. If the
filter has been soaked with fuel or oil it must be
replaced.
Installation
10. Reinstall pre-filter element over main filter. Be sure the
element covers entire surface of main filter without
folds, creases, or gaps.
11. Install air box cover and secure with clips.
NOTE: Apply a small amount of general purpose grease
to the sealing edges of the filter before reinstalling.
8. Reinstall pre-filter in main filter. Replace main filter
as required.
- projex@inbox.lv -
Pre-filter
Main Element
MAINTENANCE
Cover
Gasket
2.23