Lawn Boy 10796 Insight Platinum Series 21-Inch Honda GC160 5 HP OHV Gas Powered Engine Self-Propelled Lawn Mower with Sens-a-Speed And Electric Start Honda GCV 160 OHV Engine for premium quality, lightweight, and easy starting Exclusive Sens-a-Speed self-propel system adjusts automatically by sensing your walking speed, up to 5 mph 21" cast aluminum deck for durable, rust-free long life. Exclusive Ease of Use Features include SimpleSet Handle, Easy Lift Bag, and Quick Stow Lever minimizes the effort to make mowing simpler. 5-year full warranty