Abstract: A stump grinder having a support frame, an elongated main beam horizontally pivotally mounted on the frame, and a cutter wheel supported by and transversely oriented with respect to the main beam and rotatable about a substantially horizontal axis, the cutter wheel having a plurality of peripherally mounted stump cutter teeth spaced apart circumferentially and axially in a predetermined transversely oriented cutting pattern. The stump grinder is attachable to a three-point hitch of a tractor and the cutter wheel is directly driven by the tractor power take-off. Multiple stabilizers are mounted on the frame to provide stability as well as cutting depth control. Compensation utilizing multiple universal joints is provided to minimize angular velocity differences between the tractor power take-off and the cutter wheel. Depth gauging is provided on the periphery of the cutter wheel to control the depth of cut of individual teeth.