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Cummins/Onan — Starting at Control Panel

Operation

From a Cummins/Onan owner's manual covering: 450 DFW, 450 DM, 500 DM, 600 DFY, 750 DFZ. Check it applies to your exact model before use.

Applies to: Cummins/Onan 450 DFW, Cummins/Onan 450 DM, Cummins/Onan 500 DM, Cummins/Onan 600 DFY, Cummins/Onan 750 DFZ, Cummins/Onan VTA-28-GI engine, Cummins/Onan VT-28-G engine, Cummins/Onan VTA28-G2 engine, Cummins/Onan KTA-38-GI engine

Procedure

  1. Move Run-Stop-Remote switch on the DC panel to the RUN position.
  2. Starter begins cranking; engine should start after a few seconds.
  3. Starter disconnects when engine reaches 450 to 570 r/min.
  4. If engine does not start, control indicates an overcrank fault after up to 75 seconds.
  5. To clear overcrank fault, place switch in STOP and momentarily depress Reset.
  6. Wait two minutes for starter motor to cool, then repeat starting procedure.

Specs & values

  • Starter disconnect 450 to 570 r/min
  • Overcrank 75 seconds

Source: Cummins/Onan owner'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.

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