2.34
MAINTENANCE
© Copyright 2011 Polaris Sales Inc.
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
4. Set idle speed to 1200 RPM. Always check throttle
cable freeplay after adjusting idle speed and adjust if
necessary.
5. Slowly turn mixture screw clockwise using the pilot
screw wrench until engine begins to miss.
6. Slowly turn mixture screw counterclockwise until idle
speed increases to maximum RPM. Continue turning
counterclockwise until idle RPM begins to drop.
7. Center the pilot screw between the points in Step 5
and 6.
8. Re adjust idle speed if not within specification.
Idle Speed Adjustment (Non EFI)
1. Start engine and warm it up thoroughly.
2. Adjust idle speed by turning the idle adjustment
screw in (clockwise) to increase or out
(counterclockwise) to decrease RPM. (Refer to Ill. at
right).
NOTE: Adjusting the idle speed affects throttle cable
freeplay and electronic throttle control (ETC)
adjustment. Always check throttle cable freeplay
after adjusting idle speed and adjust if necessary.
Fuel Filter (Non EFI)
The fuel filter should be replaced in accordance with the
Periodic Maintenance Chart or whenever sediment is
visible in the filter.
1. Shut off fuel supply at fuel valve.
2. Remove seat and locate filter on right side of atv.
NOTE: Remove side panel if necessary.
3. Remove line clamps at both ends of the filter.
4. Remove fuel lines from filter.
5. Install new filter and clamps onto fuel lines with arrow
pointed in direction of fuel flow.
6. Install clamps on fuel line.
7. Turn fuel valve “ON”.
8. Start engine and inspect for leaks.
Idle speed:
1100 +/- 200 RPM
Arrow Indicates Direction of Flow
To Carburetor
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