Cummins/Onan — Centrifugal switch adjustment
Adjustments · Start-disconnect centrifugal switch
From a Cummins/Onan operator's manual covering: 12.5RDJC-518R, 12.5RDJC-53CR, 12.5RDJC-57R, 15.0RDJC-18R, 15.0RDJC-3CR, 15.0RDJC-4R, 15.0RDJC-4XR, 15.0RDJC-5DR, 15.0RDJC-9XR. Check it applies to your exact model before use.
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Procedure
- Locate switch on the gear cover on the side of the engine above the oil filter.
- Loosen the stationary contact.
- Adjust the point gap to .020 inch.
- Replace burned or faulty points.
Tools required
- Feeler gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- .020 inch point gap
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.