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Cummins/Onan — 5. Preparing for Service

For these Cummins/Onan models: HGJAA (Spec A-E), HGJAB (Spec A-E), HGJAC (Spec A-C), HGJAD (Spec A-E), HGJAE (Spec A-E), HGJAF (Spec A-C).

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Before you start

  • WARNING
  • CAUTION

Procedure

  1. Preparing for Service
  2. LPG-fueled generator sets:
  3. Park the vehicle on a level surface.
  4. Put the transmission in PARK.
  5. Lock the brakes.
  6. Remove the ignition key. Do not move the vehicle during this procedure.

Source: manual:HGJAA, HGJAB, HGJAC, HGJAD, HGJAE, HGJAF Service Manual.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.