16 hp Briggs Vanguard on my leaf loader. Went to start it last week for the first time since last December. Started right up on the 2nd pull. Let it run for about 5 minutes. 10 minutes later, went to start it up and nothing. Tried pouring a little gas in the carb. Nada. Not sure that I put any Stabil in the tank last fall, probably didn't. I thought for sure that putting a little gas in the carb directly would get it to start at least. Any help is appreciated.