If you need an efficient and lightweight workhorse mower for you lawn, this is the model for you. With a 21 in steel deck designed for maximum lift and a precision cut, 12 in high rear wheels for added maneuverability on any terrain, the PR550N21RH3 will make mowing your lawn a breeze. The high performance Briggs & Stratton 140cc, 550ex Series engine provides 5.5 ft lbs. gross torque and features ReadyStart® to gets you up and running within 2 pulls guaranteed. With the 3-in-1 - - mulch, bag and discharge - - modes, you can change functions quickly with no tools required. You can mulch and return valuable nutrients to your soil, collect the clippings in the 1.9 -bushel rear bag for a polished look or simply side discharge if it suits your needs. No matter the mode you choose, your lawn will be done and looking great in no time.