2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 150Get this manual
CARBURETORSPORTSMAN 500 Pilot Screw
The pilot system supplies fuel during engine operation with the throttle valve closed or slightly openedThe fuelair mixture is metered by pilot screw and discharged into the main bore through the pilot outlet
AirFuel Mixture Ratio
E-Clip Position vsFuel Flow 4
CAUTION
The pilot screw is calibrated at the factory to meet EPACARB regulations for air quality standards and is sealed with brass plug to prevent tamperingRemoval of the tamper proof plug is not permittedFor service purposes, cleaning of the pilot circuit can be done only by certified repair shop to ensure air quality standards are not exceeded
15 Pilot Screw Location