Yard Machines 11A-02BT729 20 in. 125 cc Gas Lawn MowerYard Machines 20 in gas push mower features a lightweight, compact design for easy maneuverability. 125 cc Briggs and Stratton 300e Series engine delivers 4. 5 ft lbs. of torque and offers reliable performance every time you mow. A side discharge creates a clear cutting path as you mow and expels clippings back onto your lawn, making it easier to cut coarse or tall grass. 3 position height adjustment offers a cutting height range of 1. 25in to 3.