Troy-Bilt TB200 150-cc 21-in Self-propelled Gas Lawn Mower with Briggs & Stratton Engine Troy-Bilt TB200 150-cc 21-in Self-propelled Gas Lawn Mower with Briggs & Stratton Engine No prime, no choke, and never change the oil with the Briggs and Stratton engine with ReadyStart® and Just Check and Add(TM) Single-speed front wheel drive makes getting the job done easier Dual-lever, 6 position height adjustment makes it easy to change cutting heights from 1.25-in-3.75-in high Advanced TriAction cutting system features a rake bumper to lift grass upright, a specially designed blade for a finer mulch and a symmetrical deck for superior grass flow, eliminating clumping Deck wash port connects to standard garden hose to clean out grass clippings from underside of deck Side discharge chute comes with handy, built-in clip to attach to handle when not in use Rear bag collects grass clippings for easy clean up or composting Mulch kit included to help put nutrients back into soil for a healthier lawn Self-propelled