The Troy-Bilt TB105B push mower is designed with a 21" steel deck for durability and comes with a mulch kit engineered to finely mulch grass clippings and help add nutrients back into the soil. Featuring a dependable 140cc Briggs Stratton engine that delivers reliable power to get the job done right and is equipped with Prime 'N Pull technology for easy starting. Dual-lever, 6-position height adjustment makes it easy to change cutting heights from 1.25" to 3.75 " 140cc Briggs Stratton engine with Prime N Pull starting system is engineered for reliable, easy starting Included mulch kit helps maintain a healthy lawn. 21"steel deck features the TriAction cutting system designed to deliver a well-groomed look to your lawn. Dual-lever, 6-position height adjustment makes it easy to change cutting heights from 1.25" to 3.75 "