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78666

Radius S Series 22 HP* Kaw FX691 w/52 Ultracut Series 3 Deck, Suspension Seat

Specifications

Model	RZS691GKA523A3	Category Name	Lawnmowers	Year	2025
Sale Type	New non-current	Manufacturer	Exmark	Mower Deck Widths	52"
Price	10,766 USD

Description

Whether you’re upgrading from an older machine or are looking to add another zero-turn to your trailer, the new Radius S-Series delivers an unbeatable combination of durability, operator comfort, performance, and value. Choose from 48-, 52-, or 60-inch UltraCut Series 3 side-discharge cutting decks, each equipped with our exclusive flow-control baffles for a superior cut quality. An adjustable full-suspension operator seat and isolated footrest provide superior all-day mowing comfort.

Radius S-Series models are also designed for maximum durability with reduced maintenance. With just two grease points to lubricate annually, low-maintenance Hydro-Gear integrated transmissions, and reliable Kawasaki commercial engines, Radius S-Series models are built for the long haul.

Looking for even more performance, power, and durability? Check out the new Radius X-Series zero-turn mower.

FEATURES

UltraCut Deck Technology

Exmark’s exclusive UltraCut decks are featured on Radius models. Every UltraCut cutting deck features Exmark’s exclusive maintenance-free, sealed-bearing spindle assemblies for increased durability and reduced downtime, combined with zero maintenance.

Heavy Duty Fabricated Frame

With a fully welded frame built from 2x3-inch frame tubes, the Radius design places major components including the engine, hydro drive system and fuel tank lower in the frame. The lower center of gravity and better mass centralization results in increased traction and stability, with improved handling.

Adjustable Rollover Protection System (ROPS)

An adjustable ROPS system is easy to fold up-and-down, and is built from round tubes for easy, flexible accessory placement.

Height of Cut Made Easy

Our patented height of cut adjustment system is user friendly and allows the operator to quickly and accurately select height of cut from the operator seat.

Full-Suspension Operator Seat

Radius S- and X-Series models feature an adjustable full-suspension operator seat, with three inches of suspension and an EVC stretch foam base for superior all day mowing comfort.

Fully Guarded Engine

With strong steel lower protection and durable composite upper protection, the Radius S-Series engine is well guarded against damage from foreign objects.

EQUIPMENT

UPC

193308225173

Seat

Deluxe suspension (adjustable spring suspension) seat with high back, molded foam flip-up armrests, and integral safety switch

Starter

Electric

Electrical

12-volt battery with 15-amp alternator.

Drive_Tires

23 x 9.5-12 Super Turf (142-4264)

Parking_Brake

Lever-actuated pawl brake.

Tractor_Frame

Unibody, welded, heavy-duty 2" X 3" rectangular tubular steel.

Blade_Spindles

No maintenance, sealed and non-greasable spindles; 7.30"-diameter cutter housing contains 17mm (.67") diameter spindle shaft and hex blade drive.

Steering_Control

Hydraulically dampened twin levers adjustable both fore and aft. Also has 2-position height adjustment.

Standard_Features

Engine hour meter, cup holder, tow hitch and jack receiver

Front_Caster_Tires

13 x 6.5-6, smooth tread, pneumatic. Caged Roller Bearings (126-3289)

POWER COMPONENTS

ROPS

2-post foldable ROPS standard with seat belt and latch.

Drive

Hydro-Drive

Speed

Infinitely variable speed selection from 0–9.0 mph (14.5 kmph) forward, 0–5.0 mph (8.0 kmph) reverse.

Deck_Lift

Standard; foot-controlled deck lift changes cutting height and lifts the deck to maneuver around obstacles, or place in transport position.

Fuel_Type

Gas Carbureted

Air_Filter

Cyclonic Air Cleaner

Engine_Spec

FX691V_S25

Fuel_System

Carbureted

Engine_Brand

Kawasaki

Engine_Model

FX691V

Engine_Speed

3,800 rpm

Transmission

Hydrostatic

Engine_Series

V-Twin

Fuel_Capacity

7-gallon (26.5-L) single fuel tank with single fill location.

Carb_Compliant

Fuel_Indicator

Translucent Visual

PTO_Engagement

MagStop electromagnetic 125-ft-lb clutch

Safety_Package

Operator Presence Controls (OPC) and drive system interlock, with safety interlock system indicators.

Drive_Description

Dual Hydro Gear ZT3100, hydrostatic transmission with charge pumps, relief valves and independent, replaceable filters.

Drive_Wheel_Release

Allows unit movement without engine running.

Engine_Displacement

726

Transmission_Speeds

Infinitely Variable

DECKS

Blades

3 Blades at 18.00" Length

Deck_Style

Floating Deck

Blade_Tip_Speed

Approximately 18,500 fpm.

Cutting_Heights

1.5" (3.8 cm) to 5.0" (12.7 cm) in 0.25" (.6 cm) increments, adjustable from operator's seat.

Deck_Construction

10-gauge high strength alloy top that is formed and continuously seam welded, with 7-gauge side skirt.

Width_/_Cutting_Deck

52"

Deck_Style_Description

Full-floating UltraCut Series 3. Side discharge standard, with molded discharge chute and option to bag or mulch.

DIMENSIONS

Width

64.3 in (163.3 cm)

Height

69.7 in (177.0 cm)

Length

80.3in (204.0 cm)

Curb_Weight

923