Polaris PTV 6x6 SERIES 10 Owner's Manual page 91

MAINTENANCE AND LUBRICATION
Adjustments
Carburetor Adjustments
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 performance, overheating or engine
damage. See your Polaris dealer for more information about jetting the
ATV for conditions in your area.
NOTE: Pilot screws are sealed with metal plugs and are serviceable
only by Polaris dealers.
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