Polaris Phoenix 9922500 - Manual (Page 65)

63
MAINTENANCE
Carburetor
Your Polaris vehicle is calibrated at the factory for optimal performance
at altitudes ranging from zero to 1800 meters and at temperatures of 4
degrees C. or higher. Above 1800 meters the engine air/fuel mixture
becomes too rich and the engine loses approximately 3% of its power
for each 300 meter increase in elevation. Although this power cannot be
regained, adjustments to the carburetor and drive system can be made to
allow more efficient operation. Optional jets and clutch components,
available from your Polaris dealer, are required for operation above
1800 meters. Jetting is required only when operating below 4 degrees C.
at 1800 meters and lower.
Tip: Continuous operation of the engine without proper jetting when required
can cause poor performance, overheating or engine damage. See your
Polaris dealer for more information about jetting.
Carburetor/Engine Idle RPM Adjustment
If necessary, the carburetor can be adjusted.
1. Position the vehicle on a level sur-
face. Place the transmission in gear.
Lock the parking brake.
2. Start the engine. Allow it to idle for
approximately five minutes. Stop
the engine.
3. Turn the carburetor idle screw in
(clockwise) to raise RPM. Turn the
screw out (counterclockwise) to
lower RPM.
Adjuster