"I started the motor, however it would not stay running. It would run for maybe 30 seconds and run out of fuel"
Dave, look for a vent screw on the fuel tank, or a shutoff on the vent hose. That's the classic symptom of a perfectly good engine--which can't suck any more gas out of the tank because the vent wasn't opened.
Don't ask me why I know and remember this. :-)