2009 Polaris Trail Blazer Owners Manual - Page 80
2009 Polaris Trail Blazer Manual
Page 80 highlights
MAINTENANCE Carburetor 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.) Tip: Continuous operation of the engine without proper jetting when required can cause poor performance, overheating or PVT or engine damage. See your Polaris dealer for more information about jetting the ATV for conditions in your area. Carburetor/Engine Idle RPM Adjustment If the engine idle speed is not satisfactory, and all other conditions are favorable, the carburetor can be adjusted. 1. Place the transmission in gear. Lock the parking brake. 2. Start the engine and allow it to warm up for approximately five minutes. 3. Turn the screw in (clockwise) to raise RPM. Turn the screw out (counterclockwise) to lower RPM. Idle Adjuster 77