I have a Kohler generator and not getting fuel to the fuel filter. I have replaced all fuel lines, fuel filter, fuel pump and main circuit board. also the remote switch does not work as well but did work before this issue. I have had a mechanic isolate the pump and use a gas can with about 5’ of line attached directly to the fuel pump and turns right over and runs. The run from my fuel tanks to the generator is about 10-15 feet. The board is not producing 12 volts when tested in the starting process and have seen in other forums that is an issue and that is why I replaced the board. I’m wondering if there could be an electrical issue somewhere else causing this like in the harnesses or something to do with the remote switch connection. Just would like some ideas.

Thank you
Tom