[dpaull]

Sounds like there may be a problem with the engine getting fuel somehow...If it's run by a fuel pump, I'd say start there. If it's a carb where the vacuum feeds the fuel to the carb, then I'd say you have a vacuum leak. Basically it's running until the fuel that's sitting in the carb is used up, then it stops.

It doesn't sound like anything with the carb, but it probably wouldn't hurt to get a rebuild kit...sometimes if a gasket in the carb bowl is leaking, it can cause it to not get fuel.

That's my guess...not great with small engines, but I've fixed enough...I'm normally better when I can play with the engine in person though.