Re: Kinetic Woodruff key?

Scott ... /
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I have nice blue spark, have squirted premix into cylinder, and it will pop, and backfire through carb, this is the adjustment screw, it was out 5 full turns when I checked it, when I pulled carb off to check, I saw that main jet was 41, which from what I've read up on this site is too lean for a stock setup. I thought maybe that's why adjustment screw was out 5 turns.

The reason I suggested woodruff key issues, is because, I have fuel spark, and compression, but maybe it sheared and now the timings all screwed up, but this is my first moped, so didn't know if there was anything else I should check.

Carb.jpg
plug.jpg
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