Doesn't change when I open the fuel cap but I've been in touch with the manufacturer and they think it could be an issue with the fuel tank so going to have a look at that, thanks

Hi there, I have just bought a Yamimoto 50 for my daughter, she filled up the fuel tank and it immediately started leaking, a steady stream from what looked like an overfill pipe which then slowed after about 20 mins. The fuel indicator on the bike is saying that the bikes tank is half full. The ...