1995brave wrote:
On some models of the Onan generators you can hold the Stop button on the generator and it runs the pump to prime the generator, check your manual.
yes, that.
Also, many later models of Onans have a light in the switch rocker. When there is a problem, that light blinks in a certain pattern, such as 3 blinks, pause, 4 blinks, long pause, start over. this is a troubleshooting aid. try to start the generator, then watch for the blinking light.I didn't know this until the belt broke on my Onan 5500 and it quit. The blinking light told me "No power output".