Aragon GP50 scrap???????

Hello, I bought the Aragon GP50 and was completely fucked up. Supposedly fully running but nothing.. Turn through, need to drive tomorrow afternoon. To my questions… 1.) Gasoline tap has 3 openings in / out / vent There’s nothing on Vent… Is that right? 2.) When it comes to the right noise from the Vario, it runs loudly (not the exhaust) 3.) When starting R4. What exactly does that mean? 4.) Air filter is a round blue one.. Presumably sport Please help m Ir, the scooter goes very badly, goes out quickly again and makes noise without end.. I don’t know any more.