Cummins/Onan 12.5 RDJC / 15.0 RDJC — Centrifugal Switch Adjustment
Adjustments · Start-disconnect centrifugal switch
For the Cummins/Onan 12.5 RDJC / 15.0 RDJC, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan 12.5 RDJC, Cummins/Onan 15.0 RDJC, Cummins/Onan RDJC
Before you start
- Shut down the set and disconnect the battery cable, negative (-) terminal first, before setting the breaker point gap
Procedure
- Locate the start-disconnect centrifugal switch on the side of the engine, above the oil filter.
- If necessary, loosen the stationary contact and adjust the point gap to 0.020 inch (51 mm).
- Replace burned or faulty points.
Specs & values
- Point gap 0.020 in. (0.51 mm)
- Switch closes when engine speed reaches 900 rpm and opens when the engine stops
Full service-parts list: Cummins/Onan RDJC →
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.