2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 24Get this manual
MAINTENANCE 5Hold rod end parallel to mounting surface and tighten jam nuts securely
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 outletCAUTION:
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