John Deere S120 Mower 42 in. 22 HP V-Twin Gas Hydrostatic Riding Lawn Mower

Overview

Engineered for residential properties up to two acres, the John Deere S120 riding lawn tractor blends legendary durability with straightforward operation. Powered by a 22 HP John Deere Easy Change™ V-Twin engine and built on a solid robotically welded full-length steel frame, this tractor delivers consistent torque and responsive hydro-drive maneuverability. The 42-inch Edge™ Cutting System optimizes aerodynamic lift under the deck to produce a crisp, clean discharge and an even cut across all lawn terrain.

• 22 HP V-Twin OHV Engine: Overhead valve design provides smooth, high-torque power and reliable cold-weather start-ups.

• 42-Inch Edge™ Cutting Deck: 13-gauge stamped steel dual-blade deck lifts grass upright for clean cutting and clog-free side discharge.

• Hydrostatic Foot-Pedal Transmission: Twin Touch™ side-by-side pedals allow effortless forward/reverse direction and speed changes without clutching.

• Spring-Assisted Deck Lift: 13-position ergonomic side-lever adjustment quickly sets deck heights from 1.0 to 4.0 inches in 1/4-inch increments.

• High-Back Ergonomic Cockpit: 15-inch contoured adjustable seat paired with open, flat-floor operator platform for step-through convenience.

In-Depth Product Overview

High-Output V-Twin Power

Under the hood sits an overhead valve (OHV) 22 HP twin-cylinder John Deere engine engineered for extended runtimes. Cast-iron cylinder sleeves, full-pressure lubrication, and an efficient cooling system maintain high blade tip velocity even when cutting thick, damp turf, while reducing engine strain and vibration through the chassis.

Edge™ Deck Precision Cutting

The 42-inch dual-blade Edge™ Cutting System features a deep-dome stamped deck designed to channel airflow smoothly across both blades. This aerodynamic suction lifts limp grass blades upright before the hardened cutting edges slice through, expelling clippings uniformly out the discharge chute without unsightly clumping. A built-in wash port allows quick garden hose attachment to clear underside debris after each mow.

Twin Touch™ Hydrostatic Drive

Navigating around garden beds, trees, and fences is intuitive thanks to John Deere’s Twin Touch™ foot pedal system. Independent pedals control forward and reverse speeds up to 5.5 mph without shifting gears or operating hand levers. The heavy-duty cast-iron front axle easily handles uneven yard undulations and resists impact wear.

Premium Ergonomic Seating & Visibility

Designed with operator comfort in mind, the open cockpit features an unobstructed flat floorboard with non-slip footpads. The 15-inch high-back seat can be adjusted fore and aft over a 5.5-inch range to accommodate drivers of all heights. Powerful integrated front incandescent headlights ensure clear visibility for early morning yard care or dusk maintenance sessions.

Technical Specifications