Cummins/Onan HDZAA — Service Procedure
For the Cummins/Onan HDZAA.
Applies to: Cummins Onan Hdzaa
Procedure
- Stop the engine by pushing the engine stop le-
- Remove the fuel solenoid and apply 12V DC.
- Contact HATZ to readjust the idle adjustment
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.