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Cummins/Onan 5.0GenSet ES 1348 — Governor Adjustments

For the Cummins/Onan 5.0GenSet ES 1348.

Applies to: Cummins Onan 5 0Genset Es 1348

Before you start

  • To avoid personal injury, use extreme caution when making adjustments while the engine is running. Do not touch hot exhaust pipes or moving parts
  • do not wear loose clothing that may be caught in moving parts.

Procedure

  1. Before making governor adjustments, run the unit about 10 minutes under light load to reach normal operating temperature.
  2. Adjust the carburetor before making any adjustments to the governor.
  3. Check the governor linkage and throttle shaft for binding or excessive looseness. The engine starts at wide open throttle.
  4. With the warmed-up set operating at NO LOAD, adjust the tension of the governor spring. Turn the speed adjusting nut to obtain a voltage of 130 volts (for 120 volt operation).

Tools required

  • Voltmeter or frequency meter

Specs & torque values

  • 130 volts for 120 volt operation

Source: manual:919-0120 Onan P-Series (spec J) Portable Genset Operators manual (12-1981).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.