On Thu, 06 Jul 2006 12:08:35 -0400, Big gus
wrote:

I hit the start button again, and its good for another 30-90 minutes.

any thoughts?

Does it restart instantly after a shut down?

It's really hard to say, but if it restarts instantly with no cool
down period or any thing else, it is possible that an automatic
shutdown sensor for temperature, oil pressure, overload, etc is
becoming inadvertantly activated because of a bad connection or
defective sensor.

Does it display any shut down codes on a panel somewhere? If so,
that's where you need to start looking.

It's also possible that a fuel line screen becomes clogged with
debris, that then falls away after it shuts down, or some other fuel
delivery issue.

Does it make a difference whether or not it is running under heavy
load?