V-Twin Power at an Affordable Price. The John Deere E120 riding lawn tractor is the premium 42 in. deck model of the 100 series line up. You'll experience more power and smoother operation with a 20 HP V-Twin engine and enjoy easier, car-like, choke free starts with the ReadyStart starting system. The new, redesigned operator's station is comfortable. The new side-by-side, forward and reverse, 2 pedal foot controls offer easy maneuverability, while the cruise control provides a constant mowing speed. Perfect for large properties. And how good is the cut. The 42 in. Edge mower deck is time-tested and proven to offer superior cut quality and can be easily equipped to bag or mulch. Here's everything you get.