5. FUEL SYSTEM ATV 50 Remove the jet needle by removing the needle clip. Check the jet needle and throttle valve for Needle Clip wear or damage. Needle Retainer 2nd Notch (STD) Jet Needle Throttle Valve Carburetor Cap Rubber Seal THROTTLE VALVE INSTALLA-TION Install the jet needle on the throttle valve and secure with the needle clip. Install the rubber seal on the throttle cable and then install the carburetor cap and throttle valve spring. Throttle Valve Spring Connect the throttle cable to the throttle valve. Throttle Valve Throttle Cable 5-4