Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Cummins/Onan›Starting Procedure - Manual Start Models

Cummins/Onan — Starting Procedure - Manual Start Models

Operation · Generator Set

From a Cummins/Onan operator's manual covering: 2.0 EGHAM, 2.5 EGHAA, 3.5 EGHEM, 4.0 EGHAB, 4.0 EGHEB, 5.0 EGHAB, 5.0 EGHEB, 5.0 EGHEM, 6.0 EGHEB. Check it applies to your exact model before use.

Applies to: Cummins/Onan 2.5 EGHAA, Cummins/Onan 4.0 EGHAB, Cummins/Onan 5.0 EGHAB, Cummins/Onan 5.0 EGHEB, Cummins/Onan 6.0 EGHEB, Cummins/Onan Elite E140H engine, Cummins/Onan GH170 engine

Before you start

  • Inhalation of exhaust gas can result in severe personal injury or death.

Procedure

  1. Open the fuel valve. On 4.0 kW sets and below, check that the speed control lever is in the high speed 'H' position.
  2. Set the choke lever to the CLOSE position. If the engine is warm, do not close the choke.
  3. On models with Idlematic switch (3.5 kW and above), place the switch in the OFF position before starting.
  4. Move the engine switch to the On position.
  5. With one hand steadying the set, grip the recoil handle and pull out smoothly and quickly. Repeat as necessary.
  6. Gradually open the choke as the engine warms; allow three to five minutes warm-up before applying load.

Source: Cummins/Onan operator's 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.

More Cummins/Onan repair guides →