Rich in features, the Husqvarna 5521RS walk-behind mower is the choice for discerning consumers. A 5.5 hp Honda engine powers a 21” deck with 3-in-1 mulch, bag and side discharge capabilities. The 5521RS features the AutoWalk™ self-propelled rear drive system that allows you set your own pace. Its High-Tunnel™ housing improves airflow, increasing grass lift for a more consistent cut. A convenient single lever controls the cutting height on all four wheels.