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Home›Repair guides›Cummins/Onan›Immobilize the Generator Set

Cummins/Onan — Immobilize the Generator Set

Maintenance

From a Cummins/Onan service manual covering: C13 N6H, C13N6H, C17 N6H, C17N6H, C20 N6, C20N6H, RS13A. Check it applies to your exact model before use.

Applies to: Cummins/Onan C13 N6H, Cummins/Onan C17 N6H, Cummins/Onan C20 N6, Cummins/Onan RS13A

Before you start

  • Accidental or remote starting of the generator set can cause severe personal injury or death.

Procedure

  1. Press the Off switch from the display and then press the E-Stop button to shut down the engine.
  2. Thoroughly ventilate the generator set before disconnecting any leads.
  3. Turn off and disconnect the heater (where fitted) from the AC source before disconnecting the battery cables.
  4. Turn off and disconnect the battery charger (where fitted) from the AC source.
  5. Turn off the fuel supply to the engine.
  6. Disconnect the battery. Disconnect the negative (–) cable first, using an insulated wrench.
  7. Place warning notices at each location that state, 'Maintenance in Progress – Immobilized for Safe Working.'

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Cummins/Onan C20 N6 →

Source: Cummins/Onan service 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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