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.
RZS691GKA523A3 Specs & Compare
| UPC | 193308225173 |
| Onboard Intelligence | None |
| Starter | Electric |
| Steering Control | Hydraulically dampened twin levers adjustable both fore and aft. Also has 2-position height adjustment. |
| Front Caster Tires | 13 x 6.5-6, smooth tread, pneumatic. Caged Roller Bearings (126-3289) |
| Drive Tires | 23 x 9.5-12 Super Turf TL |
| 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; 7.75"-diameter cutter housing with 25mm (.98") diameter spindle shaft and splined blade driver. |
| Cup Holder | Yes |
| Electrical | 12-volt battery with 15-amp alternator. |
| Standard Features | Engine hour meter, cup holder, tow hitch and jack receiver |
| Seat | Deluxe suspension (adjustable spring suspension) seat with high back, molded foam flip-up armrests, and integral safety switch |
| Power Components | |
| Transmission Brand | Hydro-Gear |
| Engine Brand | Kawasaki |
| Transmission Speeds | Infinitely Variable |
| Engine Model | FX691V |
| Engine Displacement | 726 |
| Engine Series | V-Twin |
| Fuel System | Carbureted |
| Speed | Infinitely variable speed selection from 0–9.0 mph (14.5 kmph) forward, 0–5.0 mph (8.0 kmph) reverse. |
| Engine Spec | FX801V-MS04-R |
| Transmission | Hydrostatic |
| Drive | Hydro-Drive |
| Engine Spec | FX691V_S25 |
| Engine Speed | 3,800 RPM |
| Air Filter | Cyclonic Air Cleaner |
| Fuel Capacity | 7-gallon (26.5-L) single fuel tank with single fill location. |
| Drive Description | Dual Hydro Gear ZT3100, hydrostatic transmission with charge pumps, relief valves and independent, replaceable filters. |
| Fuel Type | Gas Carbureted |
| PTO Engagement | MagStop electromagnetic 125-ft-lb clutch |
| Drive System | Hydro-Drive |
| Drive Wheel Release | Allows unit movement without engine running. |
| Fuel Indicator | Translucent Visual |
| Deck Lift | Standard; foot-controlled deck lift changes cutting height and lifts the deck to maneuver around obstacles, or place in transport position. |
| Carb Compliant | No |
| Safety Package | Operator Presence Controls (OPC) and drive system interlock, with safety interlock system indicators |
| ROPS | 2-post foldable ROPS standard with seat belt and latch. |
| DECKS | |
| Deck Style | Floating Deck |
| Deck Style Description | Full-floating UltraCut Series 3. Side discharge standard, with molded discharge chute and option to |
| Width / Cutting Deck | 52" |
| Deck Construction | 10-gauge high strength alloy top that is formed and continuously seam welded, with 7-gauge side skirt. |
| Cutting Heights | 1.5" to 5.0" in 0.25" increments |
| Blade Tip Speed | Approximately 18,500 fpm |
| Bag Capacity | N/A |
| Blades | 3 Blades at 18.00" Length |
| DIMENSIONS | |
| Width | 64.3 in (163.3 cm) |
| Height | 69.7 in (177.0 cm) |
| Length | 80.3in (204.0 cm) |
| Curb Weight | 923 |
RZS691GKA523A3 Features & Benefits
USB plug-in
Equipment Cover, Large
Protect your zero-turn mower from the elements with this sturdy, waterproof cover. It’s constructed from tough 600-denier polyester, making it abrasion- and tear- resistant. Its elastic opening provides a secure, snug fit.
UltraVac Completing Kit, 52"
3-Bushel Bagger Adapter
Adapter required for GC3602 3-Bushel Bagger ( 52" model).
Bucket Mount
Easily attach a 5-gallon bucket to your mower to pick up unwanted debris while mowing. Bucket not included.
Semi-Pneumatic Tire Assembly
Customize your ride with just the right caster tire.
Turf Striper
Customize your property with consistent and professional striping using a smooth operating roller design. Installs quickly, using existing mounting points, and easily adjusts for varying cutting height settings. Does not affect your ability to get up and over curbs.
3-Bushel Bagger
Lightweight and easy to attach, this 3-bushel grass catcher fits most riders, stand-ons and wide-area walk-behinds. Adapter kit required for select models.
Micro-Mulch System, 52"
The aerodynamically designed deck, baffles and blades create airflow patterns that circulate leaves and grass for repeated cuttings and even dispersal deep into the turf. Mulching baffles also keep the underside clean, which reduces grass buildup and clumping.
Engine Maintenance Kit, Kawasaki FX
Contains everything a do-it-yourselfer needs to keep their Exmark running like new. Includes Air Inner & Outer Element Filters, Oil Filter, Fuel Filter, Spark Plugs, Fuel Treatment and Engine Oil.
Jack
Easy to use, 15" stroke Bulldog jack, gives you plenty of room to change blades or perform routine deck cleaning (jack mount receiver not included).
5-Gallon Bucket
Carry a 5-gallon bucket on your mower to pick up unwanted debris while mowing. Mount not included.
Hydro Maintenance Kit
Kit includes: 5 Bottles Exmark Premium Hydraulic Oil and 2 Hydro Filters
Extended Drive Levers
Improve your elbow room while you operate with extended drive levers.</span></p>
Operator Controlled Discharge Gate & Cable Assembly
Operator Controlled Discharge Lever, Hand
The infinitely adjustable blocker door opens and closes, allowing the operator to quickly control discharge when mowing around parked cars and windows. Easily installs and removes without tools.
Light Kit, LED
Better and brighter than ever, this quick-install light kit keeps your productivity going into the night. Low profile, and impact-resistant, this ROPS mounted accessory emits powerful light without the use of significant amperage capacity.
Sun Shade
Easily mounts to Rollover Protection System (ROPS). Made of heavy-duty, water- repellent canvas for maximum durability. Easily removable for transport. Fits all Lazer Z and Pioneer models. (Does not fit Quest.) (Replaces 116-0513)
UltraVac Collection System, 2-Bag
2-bagger commercial-grade powered collection system. Switch between bag discharge and side discharge with quick-attach. Less clogging with larger-diamer tubes. Compact design minimizes trailer space for easy maneuverability. Dust reduction with sealed hoods.
Slope Sensor
Slope Sensor Kit
Operator Controlled Discharge, Completing Kit
Operator Controlled Discharged (OCD)
Seat Cover, Suspension, Lower 20" Back
Protect your new seat or make your old one look new. Fabric coated for maximum water resistance and repellency. Cushioned for extra comfort. Elastic cord in bottom hem for custom fit. (Fits suspension seat.)
Seat Cover, Suspension, Upper 20" Back
Protect your new seat or make your old one look new. Fabric coated for maximum water resistance and repellency. Cushioned for extra comfort. Elastic cord in bottom hem for custom fit. (Fits suspension seat.)
RZS691GKA523A3 Attachments & Accessories
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