Ultimate Mulching Performance - Unique mulching blade-disc design generates air-circulation beneath the mower continually cutting the grass - creating a fine mulch! QPT Technology® - the ultimate in reduced noise and vibration technology ReadyStart® Technology - Starting made easy! No Prime, No Choke, Smooth Pull-Start! Quad Blade Cutting System - 4 swing-back blades deliver a cleaner cut & improved catching in thick conditions. Powered by U.S. built Briggs & Stratton quiet, powerful and efficient 4-stroke OHV 725EXi Series™ engine