Man I just purchased a 07 polini for my son.. Ive raced all my life and im pretty polished when it comes to wrenching on bikes.. First off the guy that I bought the bike from was mixing the ration 60.1 I wanted to run 40.1 so I drained the gas and washed the bike up and put the tank back on an replaced with the proper fuel ratio and now the thing wont start.. I see that the spark plug is firing by the old placing the plug on the head trick.. I went and purchased a new spark plug and still nothing.. I removed the carb and cleaned and still nothing.. Im stuck scratching my head.. never had this problem before with the big bikes .. NEED SOME POiNTERS PLEASE
