Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Watch the governor arm as you move the throttle from idle to full throttle pay attention to which direction the governor arm moves. With the throttle at full throttle, loosen the nut that secures the governor arm to the governor shaft that comes through the side of the block. Rotate the shaft as far as you can in the same direction as what the governor arm moves when the throttle is operated, while holding the shaft in this position tighten the nut on the governor arm to secure the arm to the shaft. This should be a static adjustment on the governor system which should make the system work properly again.