That is the great thing about this place. After you beat yourself around the head and shoulders for hours, you come here and in 5 minutes find the right way to do something.
My Robin engine died last night... Ran out of gas. Refilled the tank, started it, got big cloud of white smoke. Immediately stopped it. Heard a gurgling noise, pulled off the air filter, and found the carburator overflowing with gas. Pulled the sparkplugs, let it sit awhile. When I started it, gas shot out the exhaust. Not a good sign. Again, pulled the sparkplugs, waited an hour, started again. Still gas shooting out the exhaust. The carburator has not repeated it's trick, so if I did have a stuck float valve, it broke free.
Started to get me worried about valves, so I pulled the crankcase covers, checked that the rockers did indeed cycle up and down while the cylinders moved. Verified with a straw that the cylinders went in and out. Came inside, and read one of Mossroad's cold weather starting/engine flooding stories, and went to bed much relieved that maybe I didn't destroy my engine. I will see how it runs today after it has sat overnight to let gas evaporate out of the cylinders.