Cummins/Onan — Voltage Adjustment Procedure (Set Running)
Adjustments · SR voltage regulator trimmer pot
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKAL, Kubota D1005 engine
Before you start
- Lethal voltages are present inside the control box.
- Do not wear jewelry or damp clothing; stand on a dry wooden platform or rubber mat.
Procedure
- Connect a voltmeter to the set output.
- Start the set.
- Adjust the trimmer pot to the desired voltage.
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 MDKAL →, Kubota D1005 engine →
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.