90
MAINTENANCE AND LUBRICATION
Adjustments
Carburetor
IMPORTANT: Your Polaris ATV is calibrated at the factory for
optimal performance at altitudes ranging from zero to 6,000 feet (1800
m) and temperatures of +40 degrees F. (4 degrees C.) or higher. Above
6000 feet (1800 m) the engine air/fuel mixture becomes overly rich and
the engine loses approximately 3% of its power for each 1000-foot
(304.8 m) 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, available from your
Polaris dealer, are required for operation above 6,000 feet and
temperatures below +40 degrees F. (4 degrees C.)
NOTE: Continuous operation of the engine without proper jetting
when required can cause poor perform ance, overheating and engine or
PVT damage. See your P olaris dealer for more information about
jetting the ATV for conditions in your area.
If the engine idle speed is not satisfactory, and all other conditions are
favorable, the carburetor can be adjusted.
1. Warm up the engine by running the
vehicl e for approximately five minutes.
2. Place the t ransmission in gear and engage
the parking brake.
3. Adjust the carburet or idle screw (1) either
in or out until the desired idle RPM is
reached. Refer to the specifications
section beginning on page 114 for the
proper setting.
NOTE: Turn the screw in (clockwise) to
raise RPM. Turn the screw out
(counterclockwise) to lower RPM.
1
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