Onan 5.5 HJAB-901A starting problem
We don't use the generator very often, other than exercising it to prevent varnish build up in the carb. It's in an '02 Georgetown. I had used the drain screw to empty the float bowl when we parked...
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That's why I think it's the mechanical regulator arm. See if it moves freely with the gen off. Should be just a bit of spring tension holding it in the up position.
