Hello, I’m a freshman here!!?? my friend, 61 years old, unfortunately has no internet and also no idea of the technology. ( ATU Explorer Spin50- throttled at 25Km/h ) Since I know SIMSON ́s and also the engines quite well I thought that I can help him. But this proves to be more complicated than thought. He switched the petrol canister from his chainsaw and the scooter and thus fuelled wrongly. With the mixture in the main tank he is only a few kilometers, with large Then the box suddenly stopped and doesn’t start any more. So I disassembled the scooter first. Detached and cleaned the tank, cleaned the carburettor, the air filter was already due for a long time and a new candle is also in it. But the box just doesn’t want to start!! Did I forget something there?? Who can help me there very quickly? He needs his BABY very quickly again!! The buses in the countryside don’t drive too often! Greetings to all screwdrivers!!