I bought a 60 cc engine kit but I think I have overtighten one of the nuts and now oil is leaking. I'm planning to get a new crankcase only. can anyone point me to the right direction. Thanks
Welcome to Motoredbikes Glag, but before you go with an new case- try to fix what you have. I don't know the details, but I am guessing you can tap deeper and use a longer bolt / or and use a sealer on it.