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Cummins/Onan — TYPICAL PROBLEMS

For these Cummins/Onan models: 15.0 HA, 7.5 HA.

Applies to: Cummins Onan 15 0 Ha, Cummins Onan 7 5 Ha

Procedure

  1. 1.
  2. 3-2
  3. 6. For HA controllers with time delay preheat, engine cranking is delayed an additional twenty seconds after bilge

Source: manual:907-0501 Onan HA Auto Demand Control Service Manual Spec D (07-1986).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.