The operator presence system allows the cutter wheel to automatically stop when the operator releases the hydraulic cutter wheel controls. The ground drive speed helps transport the machine between stumps to increase productivity on the job. The SmartSweep™ control system helps improve efficiency and productivity at the stump while helping to minimize wear and tear on the machine. Gearbox drive cutter wheel system directs the maximum amount of horsepower to the cutter wheel for optimal jobsite productivity.