Section or 
Publication 
Reference*
 
Electrical System (DC Circuits)
 
Scheduled 
Maintenance 
Section, I/M
 
Scheduled 
Maintenance 
Section, I/M
 
   ATS - Automatic Transfer Switch; Eng. 
- Engine; Gen. 
- Generator Set; I/M 
- Installation M
anual; O/M 
- Operation Manual; 
M/M – Maintenance Manual; S/M 
- Service Manual; 
 
S/S - Spec Sheet; W/D 
- Wiring Diagram Manual
 
†   Have an authorized service distributor/dealer perform this service.
 
Replace the 
inoperative switch.
 
Replace the inoperative switch.
 
Clean and retighten the connection.
 
Reduce the electrical load. See the generator set
 
installation manual for wattage specifications.
 
Inspect the exhaust system. Replace the 
inoperative
 exhaust system components.
†  
Inspect the exhaust system. Tighten the loose 
exhaust
 system components.
†  
Tighten all loose hardware.
 
Troubleshoot the engine ECM and/or sensors.
 
Reset the controller. If the
 overspeed fault occurs 
again, contact the distributor/dealer.
 
High exhaust temperature switch
 
inoperative.
 
High water temperature switch
 
inoperative.
 
Faulty ground 
connection.
 
Exhaust system not securely installed.
 
Valve clearance incorrect.
 
Engine ECM and/or sensors.
 
Exercise run 
time and/or 
event records 
inoperative 
Displays error 
message/locks 
up 
Excessive or 
abnormal noise 
Cranks but 
does not start