[Tom Wesenberg]

Do an easy check first. With the coil wire about 1/4" from a head nut, do you get a hot blue spark?

Another easy check.......pull the choke a little when it starts to bog down, and see if it picks up speed. Have you removed the fuel line at the carb and let the gas flow into a quart jar for a couple minutes. It needs to keep a good steady stream flowing.