Thanks I measured the tank and it appears to be a 90 gallong tank, by 231 cu in to a gallon. It has approximately 30 gallons of fuel, but it will not feed the generator, even with an alternative electric pump. I will assume that it should have pleanty of fuel and there is a problem with the pick up, for the generator, in the tank. Does that sound correct, to you?
I pulled the tank out and found that the factory fitting for the fuel pump pick up line was actually sucking air, past the Oring. I did away with the factory fitting and plumbed the line directly to the tank and it is working fine.
Again, thanks for the responses.