Yamaha actually doesn't give specs for fuel air mixture. The manuals state that each bike is individually tuned at the factory, and if you clean the carb, you're supposed to screw it in, record the number of turns and put it back to that setting.I have one, and currently it's at 2 turns out, and for all little bikes, between 1 and 3 is where they should be at. If it won't idle, the pilot jet is wrong or dirty. Good luck!
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