It’s about the SYM scooter type:XS50QT Variant:AF05W. The engine turns sporadicly but 80% much too fast. Occasionally it has the correct idle speed after starting. Crazy is that it more often after turning off the ignition like an old treaker continues up to a minute. The thing is not harmless because I can only bring the scooter to a stop with both brakes because it turns on with almost full throttle. At the traffic light ignition from….er tuckers then continues. In green need ic h just turn on the ignition without starter and it “rests” immediately. I look forward to receiving information. MfG Norbert