Cummins/Onan — 5V

A Cummins/Onan service procedure — check it applies to your exact model before use.

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Procedure

1. 6.5V 7.5V
2. 5.5
3. 10 to 8

Source: manual:914-0109 Onan EGMBM Operators Manual (4-2008) .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.