Cummins/Onan 12.0 RDJC — Starting the Set
Operation · Generator set
For the Cummins/Onan 12.0 RDJC, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan RDJC
Before you start
- Do not exceed the one minute preheat period.
- Do not apply overvoltage to the starting circuit.
- Do not use ether starting aids.
Procedure
- Engage Preheat switch for one minute (60 seconds at or below 55 F/13 C; 30 seconds above 55 F/13 C).
- Engage Start switch and hold in Start position until engine comes up to speed.
- If engine fails to start after 20 seconds of cranking, wait one minute to conserve battery and repeat steps 1 and 2.
Specs & values
- Preheat 60 seconds at or below 55 F (13 C)
- Preheat 30 seconds above 55 F (13 C)
Full service-parts list: Cummins/Onan RDJC →
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.