Polaris Trail Boss 330 2003 Service Manual page 32

MAINTENANCE
ENGINE-TO-FRAME GROUND
Inspect engine-to-frame ground cable connection. Be
sure it is clean and tight.
Engine Ground Strap
MAIN AIR FILTER CLEANING
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.
G
Never immerse the filter in water
since dirt can be transferred to the
clean air side of the filter.
G
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.
G
Replace the air filter every 50 hours,
and possibly more often in very dirty
conditions.
AIR FILTER/PRE-FILTER
SERVICE
It is recommended that the air filter and pre filter be
replaced annually. When riding in extremely dusty
conditions, replacement is 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 from air box cover (A) and remove
cover. Inspect the gasket (E). It should adhere
tightly to the cover and seal all the way around.
4. Loosen clamp and remove air filter assembly (B &
C).
C
B
Ill.1
Cleaning:
5. Slip the pre-filter element (C) 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 filter 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. Reinstall filter on main filter mount.
clamp over the assembly and tighten.
A
E
Place filter
2.15