[fredjacksonsan]

Since it runs fine when you put some gas in the carb, the fuel delivery system is in question. Not to be insulting, but is there gas in the tank? If so, check the fuel pump and the lines to make sure they're not corroded or clogged. If all that is ok, then maybe the carburetor itself needs some help.

When carbs sit for awhile, they can get gummed up. A carb rebuild kit (or an entirely new carb) will help in this regard. If it's the original carb, you may be better off putting on a new one.