Powerful 603cc Twin-V engines provide the torque to drive the pad at a high rpm that produces a sparkling shine. Select models offer catalytic mufflers, a heavy-duty felt seal on the shroud that provides the best dust control on the market and CARB Gard™, a device that shuts off the engine if it detects harmful emission levels. Simple controls ensure your operators won't be slowed down with machine adjustments, just start it and go. Easy pad changing, low maintenance and rugged dependability. The operator throttle is conveniently located on the handle. 80% safety fill type propane tank. 603cc Kawasaki V-twin engine.