Please dont say your using 16:1 gas oil mix. If you are go to 25:1 for break in. Take the plug out and reattach the wire to it. Hold it to the engine, side of the plug body (metal part) touching, and try to start it. Does it spark. If it does then your gap might be off not wanting to fire properly inside the engine. I have mine at .028 and it works for me. You can run anywhere from .020 - .030. No spark double check your wire and cap. If not that, then your mag has probably gone AWOL. Could also be flooded. While you have the plug out (if no spark) turn off the fuel (you did turn the petcock on in the first place right?) and ride it with the clutch engaged for a hundred feet or so. It will spatter everywhere so put a cloth loosely over the spark plug hole. Here will be the most likely solution. Figure out a way to use your choke. Without the choke on, mine will take forever to start in the cold. Anything above 50 and it kicks over without it. Try this and get back to us. The more info you can give us the more info we can give you.
