Proper mixing ratio?(MECHANIC TIPS)(Brief Article)

Q I just bought an '01 Yamaha Blaster with an engine that has been bored .60mm over and the oil injector is blocked off. What fuel mixture would you recommend? The guy I bought it from said 30:1, but it is smoking a lot right now. Also, there is only about two hours on the new top end, how long does it take to break it in? Could this be contributing to the ...

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