Pilot Air Screw Adjustment; Vent Lines; Fuel Filter - Polaris PREDATOR 50 2009 Manual

Pilot Air Screw Adjustment

CAUTION
The pilot air screw is calibrated at the factory to
meet EPA / CARB regulations for air quality
standards. Cleaning of the pilot circuit must be
performed by a certified repair shop to ensure
air quality standards are not exceeded.
1. Set idle speed to specification. Always check throttle cable
freeplay after adjusting idle speed and adjust if necessary.
2. To adjust the mixture screw setting, you will need to use
the "D" shaped Carburetor Adjustment Screwdriver PA-
47361. Slowly turn the mixture screw clockwise until
engine idle RPM begins to decrease. Stop turning at this
point.
Pilot Screw
Pilot Air Screw Base Setting:
50cc Mikuni: 2.5 turns out
90cc Keihin: 2.25 ± .5 turns out
3. Slowly turn mixture screw counterclockwise until idle
speed returns to maximum RPM. Continue turning
counterclockwise until idle RPM begins to drop. Stop
turning at this point.
4. Center the mixture screw between points in Step 2 and 3.
5. Readjust idle speed if not within specification.

Vent Lines

1. Check fuel tank, crankcase, carburetor, battery and
transmission vent lines for signs of wear, deterioration,
damage or leakage. Replace every two years.
2. Verify vent lines are routed properly and secured with
cable ties.

Fuel Filter

The fuel filter should be replaced in accordance with the
"Periodic Maintenance Chart" or whenever sediment is visible
in the filter.
Fuel Filter Location - Located in-line between fuel valve and
carburetor inlet.
LH side of ATV
To service the fuel filter:
1. Shut off fuel supply at fuel valve.
2. Remove line clamps at both ends of the filter.
3. Remove fuel lines from filter.
4. Install new filter and clamps onto fuel lines.
5. Turn fuel valve to 'ON'.
6. Start engine and inspect for leaks.
MAINTENANCE
Fuel Filter
2.13
2