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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Generac 5734 GP15000E Portable Generator Starts but dies

Customer Question

Generac 5734 GP15000E Portable Generator Starts but dies approx. 3 seconds after the starter is released. Oil pressure is good (pressure switch picks up) but the engine will continue to run only if the start switch is held on with the selenoid wire removed to keep the starter from being engaged. We are getting fuel but the spark is being shut off. It appears to be coming from a start up bypass control circuit in the control panel. No schematic available.
Submitted: 1 year ago.
Category: Small Engine
Expert:  Hank F. replied 1 year ago.

The most common cause of this is a bad Start/Stop relay.

If you get me the serial number of the genset, I can get you a schematic.