Cub Cadet Ultima Series ZT1 42-Inch 21.5 HP Kawasaki Zero-Turn Riding Lawn Mower

Product Description The Cub Cadet Ultima Series ZT1 42 is a high-performance residential zero-turn mower designed to deliver fast mowing speeds, precise maneuverability, and a clean, professional-quality finish. Powered by a 21.5 HP Kawasaki FR Series twin-cylinder engine, it provides dependable starting, smooth operation, and the power needed to maintain medium and large residential properties. Its 42-inch stamped-steel cutting deck features two cutting blades, optimized blade overlap, and a deep-dome design that promotes strong airflow and consistent grass cutting. The compact 42-inch width provides efficient lawn coverage while remaining maneuverable around trees, garden beds, fences, pathways, and other landscaping obstacles. The deck offers 15 cutting-height positions ranging from 1 to 4.5 inches, allowing the operator to create the preferred lawn finish for different grass varieties and seasonal conditions. Deck height is adjusted through a foot-assisted lift system and an easy-to-use dial, helping reduce operator effort when changing cutting settings. Two anti-scalp gauge wheels help protect the lawn when mowing across uneven areas. Dual hydrostatic transmissions provide smooth, independent control of the rear wheels through ergonomic lap bars. This system enables true zero-degree turning, allowing the mower to pivot around obstacles and reduce the amount of follow-up trimming required. Ground speeds reach approximately 7 MPH forward and 3.5 MPH in reverse, helping complete larger mowing jobs efficiently. The ZT1 42 is built around a continuous 2-by-2-inch tubular-steel frame. Cub Cadet’s e-coat and Triple Guard corrosion-protection system help defend the lower frame against moisture, wear, and rust during long-term residential use. The open-frame layout and removable floor pan also provide convenient access to the deck area for inspection, cleaning, and routine maintenance. Operator comfort is supported by a 20-inch high-back seat, adjustable lap bars, a spacious foot platform, and integrated cup holder. Dual LED headlights improve visibility in shaded or low-light conditions, while the integrated rear tow hitch permits the use of approved lawn carts and compatible tow-behind accessories. With powerful Kawasaki performance, responsive dual-hydrostatic control, a durable steel frame, and a versatile 42-inch deck, the Cub Cadet Ultima ZT1 42 is well suited to lawns with open sections, mild slopes, and numerous landscaping obstacles. Technical Specifications Specification Details Brand Cub Cadet Product Series Ultima Series ZT Model ZT1 42 Model Number 17RIEACS010 Product Type Zero-Turn Riding Lawn Mower Power Source Gasoline Engine Manufacturer Kawasaki Engine Series FR Series Engine Model FR651V Engine Type Twin-Cylinder OHV Engine Output 21.5 HP Engine Displacement 726cc Starting System Electric Key Start Lubrication System Fully Pressurized Engine Oil Capacity 2 Quarts Fuel Tank Capacity 3.5 Gallons Transmission Dual Hydrostatic Steering Control Adjustable Lap Bars Turning Radius 0 Degrees Maximum Forward Speed 7 MPH Maximum Reverse Speed 3.5 MPH Cutting Width 42 Inches Deck Construction Stamped Steel Number of Blades 2 Blade Engagement Electric PTO Deck-Lift System Foot Pedal with Dial Adjustment Cutting-Height Range 1–4.5 Inches Cutting-Height Positions 15 Anti-Scalp Wheels 2 Frame 2 × 2-Inch Tubular Steel Corrosion Protection E-Coat and Triple Guard System Front Caster Yokes 1/4-Inch Steel Operator Seat 20-Inch High-Back Seat Seat Adjustment Knob Adjustment Headlights Dual LED Parking Brake Integrated into Lap Bars Rear Tow Hitch Included Cup Holder Included Operator-Presence System Included Front Tires 11 × 6-5 Inches Rear Tires 20 × 8-8 Inches Mulching Capability Yes, with Optional Kit Grass Bagger Compatibility Yes, Sold Separately Hour Meter Available Separately These specifications correspond to Cub Cadet’s current ZT1 42 model 17RIEACS010. Earlier ZT1 42 versions may use a 22 HP Kohler engine and different model numbers, so inventory should be matched to the mower’s identification label before publishing. What’s Included Cub Cadet Ultima Series ZT1 42 zero-turn mower 21.5 HP Kawasaki FR651V twin-cylinder engine 42-inch stamped-steel cutting deck Two factory-installed cutting blades Dual hydrostatic transmission system Electric PTO deck engagement 20-inch high-back operator seat Dual LED headlights Integrated rear towing hitch Two anti-scalp deck wheels Cup holder Electric-start battery system Factory-installed safety guards Operator’s manual Ideal Applications Medium and large residential lawns Properties with numerous trees and landscaping obstacles Lawns with flat or slightly rolling terrain Properties measuring up to approximately two acres Routine weekly mowing Areas requiring precise zero-turn maneuverability Homeowners seeking faster mowing than a conventional lawn tractor Side-discharge mowing with optional mulching or grass collection capabilities