Specifications

WARNING: Many troubleshooting procedures or replacement of parts present hazards
WARNING: Contact with a hot generator set can cause severe burns. Always allow the
5. Troubleshooting 12-2008
that can result in equipment damage and severe personal injury or death.
Only trained and experienced service personnel with knowledge of fuels,
electricity, and machinery hazards should perform service procedures.
Review the Safety Precautions section of this manual.
generator set to cool before performing any maintenance or service.
ENGINE WON'T START
Logic: The generator set will not start.
Possible Causes:
· Out of fuel
· Fuel value closed
· Loose spark plug cable
· Defective spark plug
· Low oil level
Corrective Action:
1. Make sure the fuel tank is full.
2. Make sure the fuel valve is fully open.
3. Make sure the spark plug cable is connected.
4. Remove and clean the spark plug; replace it if necessary.
5. Check the oil level and add oil as necessary.
-----
BLACK EXHAUST
Logic: The exhaust is dark.
Possible Causes:
· Choke stuck in the closed position
· Dirty air cleaner
· Rich fuel mixture
Corrective Action:
1. Make sure the choke is open.
2. Clean the air cleaner.
3. If the problem is still not corrected, contact a Cummins Onan service center for information
on fuel mixtures.
38 914-0103 (Issue 3)