Generac 9344 — Overspeed Shutdown Adjustment
Adjustments · Engine control circuit board overspeed shutdown potentiometer
For the Generac 9344, from the Generac service manual.
Applies to: Generac 9344
Before you start
- Do not force the potentiometer against its stop.
Procedure
- Turn the overspeed shutdown potentiometer counterclockwise until it just contacts its stop.
- Connect an accurate AC frequency meter across the generator's AC output leads.
- Start the engine, let it stabilize and warm up.
- Use the injection pump throttle lever to slowly increase engine speed until the frequency meter reads 69-71 Hertz.
- Hold the throttle at 69-71 Hertz and slowly turn the overspeed shutdown pot clockwise; when the engine shuts down, setting is correct.
Tools required
- AC frequency meter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Overspeed shutdown at 69-71 Hertz (2070-2130 rpm)
Full service-parts list: Generac 9344 →
Source: Generac service 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.