Worked fine today for 3 hours. Turned-off and then when I attempted to start--all I heard was the spinning noise of the elec starter. I tried the pull start and it was now jammed. My guess it is something to do with the elec starter pinion gear is not enaging the flywheel gear. But I dont understand why the pull start would also be jammed--unless the engine is seized--I would be surprised--since it was taken very good care of and had the right amount of oil.