Cummins/Onan ATUC A 800 - 4X / 111 — Exerciser Clock Adjustment
Adjustments
For the Cummins/Onan ATUC A 800 - 4X / 111, from the Cummins/Onan service manual.
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Procedure
- Open the right cabinet door of the automatic transfer switch.
- Move the operation selector switch on engine control to STOP.
- Install a trip pin (left-hand thread) in the inside row of holes on the large dial for the start time.
- Place a trip pin in the outside row of holes on the large dial to stop the generator set.
- Install a trip pin in the small spoked wheel for every day no exercise is desired.
- Rotate the large dial clockwise until the correct time aligns with the time pointer.
- Align the small spoked wheel with the correct day at its pointer.
- Move the operation selector switch on engine control to RMT.
- Close the cabinet door.
Tools required
- Trip pins (left-hand thread) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Operate the generator set for at least 30 minutes each week. Exercising for one long period is better than several short periods.
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.