Onan Manuals and Bulletins - Click here.
GMC Onan Power Drawer Electrical Trouble Shooting Demo - Duane Simmons, - Click here.
— General Information
— Pre-Trouble Shooting Activity
— Board to 12 Pin Connector (J2) Cable Wire Definition
— General Repair Comments
— Trouble Shooting Aid - No Power Output
— Trouble Shooting Aid - Will Not Respond to Stop Switch
— Trouble Shooting Aid - RC Panel is Non Functional
— Trouble Shooting Aid - No Starter Action
— Data Form - Trouble Shooting Aid
Onan Control Board Operation - Circuit Board Schematic, General Repairs,Trouble Shooting Aids, - Click here.
Onan Preventive Maintenance Videos - Duane Simmons - Click here.
Duane Simmons was known as "Mr. Onan". His vast knowledge of the Onan made him the expert!
Onan Generator Trouble Diagnoisis (video by Onan) - Click here.
Onan Maintenance Schedule - Click here.
Onan Bridge Rectifier Replacement - Click here.
Onan Overhaul Slideshow - Click here.
How to Convert Your Onan to Run on Propane by Jerry Work - Click here.
Numerous Onan Info Links from Gene Fisher's Website - Click here.
Western States Presentation 10/6/19 - Onan the Barbarian - What Every Owner Should Know - Click here.
Onan Presentation - GMC Western States Fall Rally 2019 - Click here.
Want Your 4KW or 6KW Onan Generator to Run Much Smoother, Start Easier, Be More Reliable!
Do Like So Many Other satisfied GMCers Owners Have Done - Convert It To Bovee's Electrontic Ignition. Click here.