Not sure, Jerseyjim. I am under the impression that the genset, being generally so close to the fuel tank, has it's own hose dipped into the fuel. And uses it's own fuel pump. Since most gensets have a built in fuel pump, you'd think the RV manufacturer would take advantage of that.
I'm pretty sure this is true because of all the posts I've read where experts have had posters disconnect the fuel feed hose and dip it into a gallon can of gas as a test of the gensets fuel pump.
It seems that a typical issue with gas and diesel powered gensets is the rubber hose going into the fuel tank gets crushed or squeezed closed quite often.
