Cummins/Onan — Manual Starting
Operation · Control panel
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKC, Cummins/Onan HDKCA, Cummins/Onan HDKCB
Before you start
- Excessive cranking can overheat and damage the starter motor.
- Exhaust gas is deadly; carbon monoxide can cause unconsciousness and death.
Procedure
- Perform pre-start checks, prime the fuel system if necessary, and turn off air conditioners and large loads.
- Push and hold Start until the genset starts; status lamp stays on while running.
- Let the genset warm up a few minutes until running smoothly before connecting loads.
- Check for fuel, exhaust and coolant leaks; stop immediately if a leak is found.
Specs & values
- Preheating can take up to 15 seconds
- Do not crank more than 30 seconds at a time; wait at least 2 minutes before trying again
Full service-parts list: Cummins/Onan HDKC →, Cummins/Onan HDKCA →, Cummins/Onan HDKCB →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.