Stihl 4601 740 4604 KW-MM Yard Boss PowersweepShow nature you have the right of way with the KW MM PowerSweep attachment for the STIHL YARD BOSS yard care system. This powerful attachment features heavy duty rubber flaps, acting like a squeegee on steroids. It cleans up compacted dirt along roads and sidewalks, moves pebbles and sand from grassy turf, and even removes water and light snow from hard flat surfaces.