Cummins/Onan OT UCD 280 — Exerciser Clock Setting

Adjustments

For the Cummins/Onan OT UCD 280, from the Cummins/Onan service manual.

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Procedure

1. Open the cabinet door of the automatic transfer switch.
2. Move the operation selector switch to STOP.
3. Install a trip pin (left-hand thread) in the inside row of holes on the large dial for the time of day you want the generator to start.
4. Place a trip pin (left-hand thread) in the outside row of holes on the large dial to stop the generator set.
5. Install a trip pin (left-hand thread) in the small spoked wheel for every day no exercise is desired.
6. Rotate the large dial clockwise until the correct time is correctly aligned with the time pointer.
7. Turn the small spoked wheel counterclockwise until the correct day aligns with the pointer.
8. Move the operation selector switch to RMT or NORMAL, whichever applies.
9. Close the cabinet door.

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.

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