Carlgrover -

If this is a new or never run engine it may need a bit of help from a big starter. I could not get mine to run with the spring starter until a buddy of mine used his big persuader to crank it over. After a few runs it was fine. Also, be sure to set the needles per the instructions, it should run fine there. Any minor adjustments should be just that - minor, like 1/16 of a turn at a time.

Good luck, Phil