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Cummins/Onan — Governor adjustment with booster

Adjustments · governor booster

From a Cummins/Onan owner's manual covering: 10CW-150R, LOCW-150 R/, LOCW-3R/12 F. Check it applies to your exact model before use.

Applies to: Cummins/Onan 10CW-150R, Cummins/Onan Spec A, Cummins/Onan Spec B, Cummins/Onan Spec C, Cummins/Onan Spec D, Cummins/Onan Spec E, Cummins/Onan Spec F, Cummins/Onan Spec G

Procedure

  1. Disconnect booster external spring.
  2. At no load, adjust speed nut for 60-61 cycles (60 cycle) or 50-51 cycles (50 cycle).
  3. Apply full load; adjust sensitivity for maximum 3 cycle spread.
  4. Connect booster external spring at no load with no tension.
  5. Apply full load; frequency should stabilize 1 to 2 cycles higher than no load.
  6. Adjust internal spring tension if rise more than 2 cycles or if frequency drops.

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 10CW-150R →, Cummins/Onan Spec A →, Cummins/Onan Spec B →, Cummins/Onan Spec C →, Cummins/Onan Spec D →, Cummins/Onan Spec E →, Cummins/Onan Spec F →, Cummins/Onan Spec G →

Source: Cummins/Onan owner'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.

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