Scr 3500 7.2 westerbeke fuel tank help

[Mbam]

Hi Guys,

I have spent a lot of time to get the generator to run great. Now a few weeks later I have went to start it up and find her not starting. Checked all the usual suspects and everything works as it should. Now I am wondering how much fuel needs to be in my feeder tank. Starboard tank is just below 50% it has 60 gallons of fuel. I do not want to pull the fuel tube to measure. Does anyone know what it the typical amount of fuel required to run it. I dropped a little fuel manually and she runs great.

Any info would be appreciated.