Cummins/Onan — Operating in Hot Weather
Maintenance · Genset
From a Cummins/Onan operator's manual covering: 5.5 HGJAA, 5.5 HGJAB, 5.5 HGJAC, 6.5 HGJAA, 6.5 HGJAB, 6.5 HGJAC, 7.0 HGJAA, 7.0 HGJAB, 7.0 HGJAC. Check it applies to your exact model before use.
Applies to: Cummins/Onan HGJAA, Cummins/Onan HGJAB, Cummins/Onan HGJAC
Procedure
- Make sure nothing blocks airflow to and from the genset.
- Make sure engine oil viscosity is appropriate for the ambient temperatures.
- Keep the genset clean.
- Perform maintenance that is due.
- If equipped, reset the carburetor for altitude.
Full service-parts list: Cummins/Onan HGJAA →, Cummins/Onan HGJAB →, Cummins/Onan HGJAC →
Source: Cummins/Onan operator's 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.