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The governor's function is to maintain a constant engine speed.The governor has 4 flyballs that ride inside a star-like cage disk. The flyballs rest on a tapered race, and the disk is mounted on a shaft. As the rpm increase the flyballs are thrown centrifugally outward against the tapered race, causing the disk to slide on the shaft, where it contacts a linkage that goes to the throttle arm linkage. If the engine starts to slow down due to a load, the flyballs move inward, causing the sliding disk to pull back from the linkage, thereby asking the throttle for more gas so the rpm remains fairly constant. As the load on the engine decreases, the shaft will slide back, decreasing the throttle. If a governor is malfunctioning, the tractor will not respond to changes in load. It's easy enough to check. Put the tractor in 2nd gear, give it 1/3 throttle, hold the brakes on and gently ease out on the clutch. If the tractor dies right down with no effort to increase power, the governor may need adjustment or repair. To inspect, remove the two mounting bolts and oil line(if there is one) and carb linkages, and pull it out. Inspect the flyballs, housing, cage and race for wear. The flyballs most often have flat spots. The cage can have worn slots, the disk can have grooves worn in it. The bushings and shafts can be worn and sloppy.
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