No fuel to Generator.

2000 Itasca Suncruiser 35u. Bought the coach 2 weeks ago and am going through a few things that need attention. On of which is the Genset. This unit has the Onan Emerald 5000 generator. It's got spark but has a no fuel situation. I figured it was a gummed carb but much to my surprise it's a fuel supply issue. Is there a valve of some sort that can be turned on and off to supply the generator with fuel? I pulled the fuel supply line which I'm assuming comes directly from the coach's fuel tank and there wasn't anything there. I was pulling the line from the inlet side of the generators fuel pump. I tried tracing the line back to the tank but it runs up into the coaches center section and I couldn't do so. I currently have a little over half tank of fuel in the fuel tank.

Any help with this is appreciated!