Daelim S4 50cc Service Manual - Mojo

FUEL SYSTEMTHROTTLE STOP SCREW Extend the hose(60mm) at the tail pipe and insert theprobe of the emission analyzer to the tail pipe andadjust the pilot screw with a 1/8, the Co to became3~4%. Adjust by the throttle stop screw, repeat step and until according the idle rpm (1,700rpm) and theCo(3~4 %). Snap lightly in idling and check to see if the rotationis smoothly and to return is normal.● Install the carburetor maintenance cover.ACCELERATINGNOTE•If the engine cannot be adjusted by turning thepilot screw within a ¼ turn, check for other engineproblems.EMISSION ANALYZER IS NOT EXIST Turn the pilot screw clockwise until its seats lightly,then back it out to the specification given. (1 1/2) Warm up the engine until the engine oil temperaturereaches to approximately 60°C. Adjust the idle speed with the throttle screw.IDLE SPEED: 1700 °±100 RPMPILOT SCREWNOTE•Before adjustment the pilot screw, check thefollowing items.•Fuel system electrical system for troubling.•Do not force the pilot screw against its seat. Theseat will be damaged.•The spark plug for cleaning and gap adjusting.•Valve clearance for adjusting.THROTTLE STOP SCREW