Cummins/Onan — Adjust Output Voltage (Faceplate)
Adjustments · Voltage regulator
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKUB, Cummins/Onan MDKWB, Kubota Z482B engine, Kubota D722B engine
Before you start
- High voltages within the control cabinet can cause severe personal injury or death.
Procedure
- Connect a voltmeter to the set output.
- Power the set.
- Loosen the lock nut and set the faceplate voltage adjustment trim pot to mid range.
- Lock the pot into position by tightening the lock nut.
Tools required
- voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan MDKUB →, Cummins/Onan MDKWB →, Kubota Z482B 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.