Cummins/Onan CFP5E / CFP7E — Overspeed Set Point Adjustment
Adjustments · Overspeed control module
For the Cummins/Onan CFP5E / CFP7E, from the Cummins/Onan owner's manual.
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Before you start
- Engine overspeed trip stops engine immediately.
Procedure
- Open engine instrument panel and remove Overspeed Potentiometer Cover.
- Place AUTO/MANUAL Mode Switch in MANUAL position.
- Start engine and adjust speed to system design pump speed.
- Press and hold test button. Slowly turn Overspeed Potentiometer counterclockwise until engine stops.
- Keep test button depressed during adjustment.
- Press Reset button on speed switch or front panel.
- Final pump speed is typically set while pump is flowing 150%.
Specs & values
- Test button reduces overspeed set point by 20%
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.