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[Beau388]

Originally Posted by Rich9592

Ongoing issue with running Onan Gen., model 4KYFA26100p, not providing enough Volts to engage transfer switch, no house power. Recently had RV into Cummins and they replaced control board with p/n 327-1413. Worked for a couple of weeks but now issue has returned.
How can I check generator voltage with multimeter? Regulator is part of the control board.

The easiest way is to pull the top of the transfer switch, set the volt meter to 120 to 240 volts AC, put the voltmeter probes into the electric cable lugs coming from the generator and then start the generator. Please be careful as 120 volts is enough to injure you badly. I would you tape the voltmeter leads to the terminals if you cannot wedge them in-place.