Speedfight 3 AC Hey, now it also caught me and I have to ask in the forum for advice. I screwed the scooter up and down several times after a ride, because my main stand was fixed. After my main stand was free again (about 2 hours after) I wanted to go again and the scooter did not go on any more. No spark! CDI exchanged, rectifier exchanged, spark plug, spark plug, ignition coil exchanged, nothing. I measured after several desperate days now, possibly one can read from it exactly what is broken or what it is about. See Appendix PDF Must currently use the bike to school… Greeting Marc