All the manuals are posted on here - have you looked through them? THe front of TM9-2320-360-20-3 has a bit of troubleshooting but its a preface to the engine controller.
All the manuals are also at: www.liberatedmanuals.com/
I will try to find the one that contains the schematic.
All the manuals are also at: www.liberatedmanuals.com/
I will try to find the one that contains the schematic.