2.4 hours. A strong 21.5 HP Kawasaki engine delivers reliable power to tackle your yard. 54-in. heavy-duty fabricated AeroForce™ deck with FastAttach cutting system that has been tested and proven to deliver a best-in-class cut, meaning fewer clumps and stragglers, finer clippings and increased evenness. AGM battery delivers reliable starting with slower discharge so you worry less about your battery going dead in the offseason. Tuff Torq Hydrostatic transmission, no shifting, just push the pedal and go.