I assume you are able to start/stop from the rocker switch at the generator?
If so, you might have a poor connection in the control cord plug from the generator to the dash. Follow the cord form the generator to the plug, pull the plug apart, spray liberally with Electronic Contact Cleaner and then add a dab of Dielectric Grease to the pins and reassemble. Good Luck.
Dennis & Carol
2003, 4006, 41' DutchStar,
Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.