Guardian 4000 has 147 hrs, starts right up runs for a few minutes than quits, but if you keep push ing the start buttion it will keep running? The start button inside or on generator,
You say Guardian that is Generac???? Then you indicate Onan 4.0KY. If it is a Onan and it stops after you release the button there are a couple of things. 1 st check the brushes, and polish the rotor slip rings, check the resisitance of the rotor, the electrical harness plugs are tight. The control requires a voltage feedback while cranking to engage the PCB run circuits, if all those check out you have a bad control board.
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