The design of Rayco’s RG 1645 self-propelled stump cutter combines a 44-hp Kubota turbo-diesel engine, 4-wheel-drive, and 59-inch cutting width into a compact machine with a low center of gravity. The pivot design keeps the engine’s weight low to the frame. Fold-down chip retainers provide loads of chip capacity and minimize cleanup time. The unit also can fit through a 36-inch gate and has a hydraulic backfill blade.