The M310 21-in. 163cc RWD Self-Propelled Mower has a Briggs & Stratton engine® with easy and reliable starting system with no prime, no choke. A 3-in-1 deck allows you to discharge, mulch to help put nutrients back in your soil for a healthier lawn, or use the 2.3 bushel Dust Blocker bag for easy clean up or composting while reducing in-air dust and debris. Feature rich, this mower has 11-in. rear wheels for improved maneuverability on any terrain, dual-lever, 6 position height adjustment which makes it easy for you to adjust the cutting height while mowing, and Easy Fold handles for compact storage.