Exmark Radius S-Series RZS691GKA523A3

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 ...

Overview

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.

 

Specifications

Model
Radius S-Series
Category Name
Lawn / Garden
Year
2025
Sale Type
New
Manufacturer
Exmark
Quantity
0
Manufacturer Qty
0
Mower Deck Widths
52"

features

Exmark Radius S Series RZS691GKA523A3 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.

Exmark Radius S Series RZS691GKA523A3 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.

Exmark Radius S Series RZS691GKA523A3 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.

Exmark Radius S Series RZS691GKA523A3 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.

Exmark Radius S Series RZS691GKA523A3Full-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.

Exmark Radius S Series RZS691GKA523A3Fully 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

Documents

  • Radius+S-Series.pdf

    Radius+S-Series.pdf

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