Most likely in the oil pressure or coolant temp circuit - most generators have a high temp/low oil pressure shutdown which is bypassed when starting. Trace the sensor wires and look for a relay..if you can find a wiring diagram for the generator it will help. Holding down the start button will kill the starter...
1995 BlueBird BMC 37
2013 Jeep Wrangler Rubicon Unlimited
1984 BlueBird Wanderlodge FC35RB-Sold