Cummins/Onan — Onan YD Generator Major Service

For these Cummins/Onan models: JB, JC, JC15, MDJE, MDJF, MJC, MJC15, RDJC, RJC.

Applies to: Cummins Onan Jc15, Cummins Onan Mdje, Cummins Onan Mdjf, Cummins Onan Mjc, Cummins Onan Mjc15, Cummins Onan Rdjc

Procedure

1. 1. Review service requirements
2. 2. Prepare maintenance checklist
3. 3. Inspect all major components
4. 4. Test generator under load

Source: manual:900-0184 Onan YD Generators & Controls Major Service manual (10-1975).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.