Cummins/Onan — Preliminary Governor Adjustments
Adjustments · Cummins model EFC electric governor
From a Cummins/Onan operator's manual covering: KTA51, KTA52, KTA53, KTA54, KTT52. Check it applies to your exact model before use.
Applies to: Cummins/Onan DFLA, Cummins/Onan DFLB, Cummins/Onan DFLC, Cummins/Onan DFM, Cummins/Onan KTT52
Procedure
- Idle Speed potentiometer: turn screw counterclockwise 20 turns then clockwise 10 turns to set mid position.
- Run Speed potentiometer: turn screw counterclockwise 20 turns then clockwise 10 turns to set mid position.
- Gain potentiometer: turn the screw fully counterclockwise.
- Droop potentiometer: turn fully counterclockwise for isochronous operation; approximately 40 for 3 percent droop; approximately 80 for 5 percent droop.
Specs & values
- Droop approximately 40 for 3 percent droop
- Droop approximately 80 for 5 percent droop
Full service-parts list: Cummins/Onan DFLB →, Cummins/Onan DFLC →, Cummins/Onan KTT52 →
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.