My drive belt split up when I was driving. Right after my Piaggio zip started when I tried it. But after some minutes the scooter just drowned. After I cleaned the variator and changed the driving belt it is the same problem. It doesn't start''! I have checked my spark plug, and this is ok. My air filter is also clean! Some other things I should check? sorry the place I posted this, but I don`t know where I should place it:s

Motorcycles - Piaggio - Ovetto - 2005 Piaggio Zip SP