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Cummins/Onan HDZAA — Remove exhaust and test, (spark arrestor

For the Cummins/Onan HDZAA.

Applies to: Cummins Onan Hdzaa

Procedure

  1. Verify that the stop solenoid is operating cor-
  2. Check the PMA winding connections at the in-
  3. The engine “wet-stacked” when run under no
  4. The injector is partially blocked. Check the
  5. The injector popping pressure is too Low.

Source: manual:983-0502 Onan HDZAA (spec A-B) Diesel Genset Service manual (06-2010).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.