Cummins/Onan 205AJ — Adjusting the governor - battery charging plant
Adjustments
For the Cummins/Onan 205AJ, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan AJ series
Procedure
- Turn knurled speed adjusting nut to desired charging rate on ammeter.
- If governor hunts, turn sensitivity adjusting stud outward.
- Any sensitivity change requires compensating speed adjustment.
- Maximum speed at full load approximately 2400 rpm.
Tools required
- ammeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Maximum speed at full load approximately 2400 rpm
Full service-parts list: Cummins/Onan AJ series →
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.