Cummins/Onan — Break-In
Operation · Generator set
From a Cummins/Onan operator's manual covering: 12.0 DJC, 4.5 DJB, 4.5 DJE, 6.0 DJB, 6.0 DJE, 9.0 DJC. Check it applies to your exact model before use.
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Procedure
- One half hour at 1/2 load
- One half hour at 3/4 load
- Full load
- Drain and replace crankcase oil after first 50 hours
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.