Barb; could you add info about you RV to your "about me " section and consider setting up a " Signature Line " so members know exactly what you're working on.
The gen set fuel pick up doesn't extend to the bottom of the RV fuel tank , so first thing to check , is the fuel tank well over 1/3 full ?
Generator use depends on when/where you use the RV . I use the gen set to operate the coffee maker and microwave during lunch stops on the road . On rare occasions to power up the roof air conditioners during highway travel when the dash air can't keep up . Pretty much anytime you need a 120 volt system in the RV when not on shore power .