Cummins/Onan — Starting the Genset
Operation · Genset control
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAJ, Cummins/Onan HDKAK
Before you start
- Exhaust gas is deadly. Do not crank more than 30 seconds at a time; wait at least 2 minutes before trying again.
Procedure
- Check fuel, oil and coolant levels; prime fuel system if necessary.
- Turn off air conditioners and other large electrical loads.
- Push control switch to Start and hold while status light blinks rapidly (preheat).
- Release when light comes on continuously (genset running, starter disconnected).
- Let genset warm up a few minutes before connecting vehicle loads.
- Monitor engine gauges: oil pressure approximately center of scale, temperature 160-220 deg F, DC voltage 14-15 volts.
- Check for fuel, coolant and exhaust leaks; stop genset immediately if a leak is found.
Specs & values
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAJ →, Cummins/Onan HDKAK →
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.