Cummins/Onan 1B Series — Adjusting the charging rate - AC remote control plants
Operation · Generator
For the Cummins/Onan 1B Series, from the Cummins/Onan owner's manual.
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Procedure
- Turn rheostat knob right to increase charging rate.
- Turn left to decrease.
- Usually 2 to 3 amperes keeps battery charged.
- Do not exceed constant charge rate over 6 amperes.
- Check specific gravity with hydrometer at regular intervals.
Tools required
- hydrometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Cummins/Onan owner'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.