Ultimate Mulching Performance - Unique mulching blade-disc design generates air-circulation beneath the mower continually cutting the grass - creating a fine mulch! Ultimate Catching Performance - Quad–Blade Cutting System delivers a cleaner cut & improved catching in thick, wet grass. ReadyStart® - Starting made easy! No Prime, No Choke, Smooth Pull-Start! Powered by U.S. built Briggs & Stratton OHV 163cc 675EXi Series™ Series engine and Large Radius Fuel Neck!