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Cummins/Onan — Make adjustments in small increments.

For these Cummins/Onan models: OT, OT UCD 280.

Applies to: Cummins Onan Ot Ucd 280

Procedure

  1. 10. Move the load selector switch to desired position, “WITHOUT LOAD” or “WITH LOAD.”
  2. 11. Close and lock cabinet door.

Source: manual:962-0102 Onan OT 100 to 280A Spec C 400 to 1000A Spec B Operators Manual (2-1980).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.