Kohler 6.5kw gas generator

[Franklt1]

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

[bud37]

Welcome to the forum......from my perspective your mechanic has just gravity fed the system which may not prove whether the pump actually works. Did he test the pump separately ?

[Franklt1]

Yes, he tested the pump alone and it ran fine he said.

[km1125]

Did he already eliminate the anti-siphon valve as a possible culprit?

[buster53]

QR_BBPOST Did he already eliminate the anti-siphon valve as a possible culprit?

That was my first thought when I read the OP’s post. I have a Kohler as well and when I started having problems, my mechanic pulled the anti-siphon valve to find it gunked up. Replaced it and all was good.

[tomschauer]

Don't ask me how I know this, but the pump is polarity sensitive, and it can be plugged in with reverse polarity making the pump run, but run backwards and not pump any fuel.