Carb float failure!!!
Only an hour or so on this engine now.... Drove it today after work... got about 3 blocks away, when the engine quit. I looked down, and fuel was pouring out of the air intake. I shut off the tank fuel valve and pedaled home. I suspected the carb float was stuck. Took off the carb bowl to find that the float was full of fuel!!!! Anyone else heard of a leaking float? Looks like I will just buy a new float. Hope this isn't a common thing.