Was mowing the other day and about 3/4 of the way thru, the Cub was running and then stopped. Nothing caught, everything free, just shut down. Had the tank a little low on fuel, filled up and tried again. Nothing, cranks over freely. (I hand crank to start, pops off right away)Let it set a couple of hours, started right up, made a few passes, the quit again. This time it was too late, went out the next morning, cranked it over and started right up. Almost finished mowing, then quit again. Didn't get back to it till today, now, no start. Am I missing something, got fuel, checked vent on tank, that's good. Haven't checked spark yet, what's the best way to check and proceed forward? Maybe coil, condenser, points? I'm venturing into foreign territory here, electrically wise. Thanks, Brett