Polaris 450 S Offroad Vehicle User Manual

Normal wear from engine vibrations may cause the carburetor to supply an overly rich fuel
mixture. Replace the jet needle and the needle jet after every 180 hours of operation.
Idle Speed
Carburetor idle adjustments affect engine starting behavior. A proper idle speed of 1700-
1800 RPM will result in easier starting. If idle speed is unsatisfactory, make adjustments as
outlined on page 124.