FrontMount™ 700 Series

Liquid-Cooled Diesel

MODEL 721DT

Designed for fuel efficient performance while maximizing power to meet the demands of daily operation, the Model 721DT provides economy, speed, durability and versatility for any application.

IMPLEMENTS

AERA-vator™ Coreless Aerator
Little Bully™ Dozer Blades
Edge-EZE™ Edger
Tine-Rake™ Dethatcher
CleanSweep™ Rotary Brooms
Shielded Sprayer
DriftBuster™ Snowthrowers
Turbine Blower
V-Plow
FrontMount™ PowerVac™ Collection Systems
  • Residential Use: 4-year or 800-hour (whichever comes first); limited warranty covering parts and labor.
  • Commercial Use: 3-year unlimited hours; limited warranty covering parts and labor.
  • EPA Tier 4 Final-compliant 44 cu. in. (719 cc), 3-cylinder, liquid-cooled Kubota Clean Diesel engine with horizontal crankshaft and pressure lube for smooth, reliable operation
Exclusive T-Drive™ Transmission
  • Tandem 12cc Parker pumps-in-reservoir transmission is specifically designed for turf-care applications
  • In-line CoolFan™ cooling system and integrated, replaceable, high-efficiency fine-particle filter
  • Design directs more power to the cutting deck as power-sapping components are eliminated
  • ComfortZone™ seat eliminates jostles and jolts with coil-spring suspension and a fully padded, high-back seat, padded armrests and variable density foam cushion. Iso-mounting smooths the ride, erases fatigue and keeps the operator comfortably in control at faster mowing speeds
  • Operational controls including throttle, choke and angled View-Eze™ console and adjustable cup holder are well positioned for visibility and ease of reach
  • Hydra-Smooth™ dampened, dual swing-out levers provide easy on/off access and smooth, instinctive control, and adjust to operator reach for increased comfort. Levers are less strenuous than riding mowers with steering wheels
  • QuikAjust Tilt™ steering levers with no tools adjustment provide a 9-inch range for maximum comfort and fit while maintaining natural arm and writs positions.
Minimal Maintenance
  • Fewer than 10 grease points and easy top-side access to belts and filters
  • 1,000-hour transmission fluid change intervals
  • Self-tensioning belts minimize cost and labor on routine maintenance

QuikAjustTiltLiversQuikAjust Tilt™ steering levers with no tools adjustment provide a 9-inch range for maximum comfort and fit while maintaining natural arm and wrist positions.

  • Extra-deep, 5.5-inch deck is fabricated from heavy-gauge formed steel with a reinforced anvil edge
  • Specially designed cutting chambers enhance airflow for better cut quality
  • Deck easily converts from side discharge to optional Down Discharge™ mulching or PowerVac™ collection
  • Sentry™ spindles with massive, 8-inch flanges anchored in a 6-bolt pattern, spread the force of impact for greater strength
  • Spindle planes fabricated from double-layered, 7-gauge plus 10-gauge formed steel laminate that is 0.3138 inch thick 25.5 percent thicker than ½-inch steel
  • Sentry™ spindle guards shield spindle housing and seal lower bearings from fiber wrap and dirt ingestion

Standard on all FrontMount™ DuraMax® decks 48-inch and larger, PowerFold® is the zero-turn mower industry's first electric deck lift (introduced in 2004).

PowerFold® rotates the deck nearly 90 degrees to provide easy access to the underside of the deck for simplified maintenance and mulching package installation, plus space-saving portability and storage.

The feature also adjusts cutting height between 1.0 and 5.0 inches and controls deck lift functions using a single switch.

  • Standard, low profile operator protection structure (OPS) with an adjustable seatbelt
  • Dampened steering levers that return to neutral from forward and reverse
  • Interlock switches that shut down the engine when the operator leaves the seat while PTO is engaged or levers are in drive position
  • Equipped with a High Temperature Clutch Cut-Out that automatically disengages the PTO if engine temperature reaches a certain point to prevent engine damage

Wide stance single-fork tail wheels provide increased flotation and stability for a smoother ride.


Type/Horsepower/Cylinders
Kubota, 3-cyl.
Displacement
43.9 cu. in. (719 cc)
Lubrication System
Pressure Lube/Filter
Crankshaft
Horizontal
Cooling System
Liquid
Fuel
Diesel - No. 2
Fuel Capacity
8 U.S. Gal (30.28 l)
Optional Fuel Capacity
NA
Air Cleaner
Heavy-duty, remote mounted, cyclonic, dual element air filtration.
Muffler
Ultra quiet, single, industrial type
DECK
DuraMax
Mulching Package #
504567(52), 504569(61)
DURAMAX® DECK SIZE
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
*
– 61" Deck
NA
– 72" Deck
NA
CUTTING HEIGHT RANGE
1.0 to 5.0 in. (2.5cm to 12.7 cm)
CONSTRUCTION (Robotic-welded steel)
Tubular 2.25 in. x 4 in. boxed members with 0.25 in. gussets. Formed double thickness hardened steel (0.269 in. 7.6% thicker than 0.25 in. (6.35 mm)) truss spindle plane and (3) Sentry™ spindles and a triple-strength upper deck, 1/2 inch thick in stress zones. Geometrically engineered design with 7 gauge skirts to withstand the brunt of commercial mowing.
BLADES (Tempered, alloy steel)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
(3) 18 in. (45.7 cm)
– 61" Deck
NA
– 72" Deck
NA
SPINDLE ASSEMBLIES
Sentry™ Spindle System, 2.5 cm (approx. 1 in.) O.D. shaft. Double bearings greasable from top of deck. Spindle head designed to eliminate fiber wrap. Spindle cones shield housing and lower bearings from fiber wrap and dirt ingestion.
SPINDLE HOUSINGS
8 in. (20.3 cm)-diameter machined aluminum housing with 6-bolt pattern.
BLADE DRIVE
Maintenance-free gearbox with single Kevlar V-belt and idler arm tensioning.
TRIMABILITY (Outside of std. tire to left trim side)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
1.0 in. (2.5 cm)***
– 61" Deck
NA
– 72" Deck
NA
Battery (maintenance-free)
12 Volt
Starter
Solenoid shift
Ignition
Breakerless, diesel quick heat glow plug
Interlock System
Prevents engine start when PTO clutch is engaged or steering levers are in drive position. Allows operator dismount without engine shutdown only when PTO is disengaged and steering levers are locked in neutral.
Seat
Ultimate Suspension Ride (USR) iso-mounted, high-back, deep-cushioned, foam-padded CoolTemp Cordura-covered, padded arms/backrest with lumbar support and coil-spring suspension. Optional CoolTemp Cordura-covered premier suspension seat.
Suspension
AntiVibe PowerPlatform™ with iso-mounted seat and footrest
Console-mounted Instruments
Low engine oil pressure, alternator, temperature and parking brake warning lights, engine temperature and volt gauges, digital hour meter, work lights, ignition, glow plug and push/pull PTO switches.
Work Lights
Optional - LED
Hour Meter
Standard
Type
T-Drive™ hydrostatic transmission with tandem 12 cc Parker pumps-in-reservoir, in-line CoolFan™ for cooling efficiency, design-matched Parker high-torque wheel motors. AntiVibe Power Platform® reduces vibration for the operator.
Filtration/Hydro Fluid
Integrated, replaceable, high-efficiency, fine-particle filter / Grasshopper CoolTemp Hydro-Max™ fluid withstands high and low temperature extremes for 1,000 hour change intervals.
Speed
0 - 9.0 mph (0 - 14.5 kph) forward 0 - 6.0 mph (0 - 9.7 kph) reverse
Turning Radius
True zero degree, turns within own length with counter-rotating, independently powered drive wheels. Seat is pivot point.
Steering
One- or two-hand operation with adjustable, Hydra-Smooth™, dual levers that automatically return to neutral from either forward or reverse position.
Brakes
Dynamic braking through hydrostatic transmission.
Parking Brake
Disc parking brakes, one for each drive wheel.
Attachment Drive
Telescoping PTO shaft with two high-speed U-joints, Quik-D-Tatch® coupler and heavy-duty electric Mag Stop® blade clutch/brake.
MidMount
Drive Wheels - Standard (4-ply rated)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
NA
– 61" Deck
NA
– 72" Deck
NA
Drive Wheels – Optional (4-ply rated)
NA
Front Wheels – All Models
NA
FrontMount
Drive Wheels – Standard (4-ply rated)
22x11.00x10 bar tread, high flotation, 4-ply rated
Drive Wheels – Optional (4-ply rated)
22x10.00x10, turf tread, 4-ply rated
Single Tail Wheel
NA
Wide Stance Single Fork Tail Wheel
13x6.50x6 rib tread, pneumatic (2)
Deck Tires (4-ply rated)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
9x3.50x4 (flat proof), 4-ply rated
– 61" Deck
NA
– 72" Deck
NA
Height (Seat Back)
46.0 in. (116.8 cm)
Height (Seat Cushion)
30.5 in. (77.5 cm)
Height (ROPS)
69.0 in. (175.3 cm)
Length (FrontMount w/ DuraMax Deck®)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
105.5 in. (268.0 cm)
– 61" Deck
NA
– 72" Deck
NA
Length (FrontMount Power Unit + DuraMax Deck®)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
88.5 in. (224.8 cm)
– 61" Deck
NA
– 72" Deck
NA
(Deck Raised - Flipped)
– 48" Deck
NA
– 52" Deck
88.5 in. (224.8 cm)
– 61" Deck
NA
– 72" Deck
NA
Deck Width (Side Discharge)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
65.5 in. (166.5 cm)
– 61" Deck
NA
– 72" Deck
NA
Deck Width (Mulch*)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
53.5 in.* (135.9 cm)
– 61" Deck
NA
– 72" Deck
NA
FrontMount PowerUnit Only (Width/Length)
50.0 in. (127.0 cm)/67.0 in. (170.2 cm)
FrontMount Power Unit (Wheelbase)
51.5 in. (130.8 cm)
(Uncrated)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
1335 lbs. (605.5 kg)
– 61" Deck
NA
– 72" Deck
NA
FrontMount Power Unit Only (uncrated)
965 lbs. (437.7 kg)
FrontMount Deck Only - Side Discharge (uncrated)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
370 lbs. (167.8 kg)
– 61" Deck
NA
– 72" Deck
NA
Mulching Package
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
29 lbs. (13.2 kg)
– 61" Deck
NA
– 72" Deck
NA

All specifications and information displayed on this Web site are subject to change without notice.

  • 52- or 61-inch 34 Series DuraMax® side-discharge decks, which easily convert to Down Discharge™ mulching or PowerVac™ collection. All come standard with PowerFold® electric deck lift/height adjustment; however, 52- and 61-inch manual FoldUp™ decks are also available.
  • 52- or 61-inch 34R Series DuraMax® side-discharge decks, which easily convert to Down Discharge™ mulching, rear discharge or PowerVac™ collection and come standard with PowerFold® electric deck lift/height adjustment.
  • 52- or 61-inch 35R Series dedicated DuraMax® rear discharge decks, which come standard with PowerFold® electric deck lift/height adjustment.
Used in conjunction with PowerFold® electric deck lift/height adjustment, this armrest-mounted switch controls deck lift functions and adjusts cutting height between 1.0 and 4.5 inches on the go.
Adjustable Cup HolderThe Adjustable Cup Holder locks into multiple positions to accommodate a wide range of drink sizes.
Down Discharge™ mulching packageThe optional Down Discharge™ mulching package with GrassMax™ High-Low Mulching blades cuts and recuts clippings and directs them deep into the turf, enriching turf and producing a beautifully manicured cut.
Optional rear discharge shield kit converts 34R Series decks to direct clippings out the back of the deck for a smooth cut and no windrowing.
PowerVac™ Powerful, deck-driven PowerVac™ collection systems deliver one-pass perfection every time, and are available with a wide range of twin or triple mesh bag or high-capacity metal hopper collectors.
An optional Air Dam Kit can be installed along the front edge of most mower decks to minimize dust and dirt escaping from the front of the mower.
SpeedTrimming™ Roller KitThe optional SpeedTrimming™ heavy-duty, anti-scalp roller kit for 52-inch and larger DuraMax® decks speeds close trimming near buildings, fences retaining walls and other landscaping features. Kits available for both left and right sides of cutting decks.
Premier Suspension Seat The optional Premier Suspension Seat offers the ultimate in comfort and an extra measure of suspension while mowing over rough ground. Adjustable backrest, armrests and lumbar support with weight-adjusted suspension control provide maximum comfort for operators of all sizes and preferences.
Provides an additional two inches of leg clearance.
Provides additional seating room for larger operators or to accommodate cell phones or pagers. Requires seat belt extension.

LED work lights provide improved visibility in low light situations.

Allow for controlled side-to-side flotation of the deck in rolling terrain for a smooth, even cut.
Hydraulic Deck LiftRaises the front of the deck to maneuver over soft or uneven ground and to clear curbs, trailer ramps and other obstacles. Lift switch is standard in lever on current models. Kit includes Universal Wiring Harness and requires 50-lb. counterweight and counterweight mount kit.
Filter MinderThe Filter Minder alerts the operator when airflow is restricted in the air canister on dual-element air filters.
Tail Wheel OptionsDual-fork tail wheels or wide stance single-fork tail wheels.
Every FrontMount™ mower accepts a range of time- and labor-saving QuikConverter™ implements for even greater flexibility and productivity year-round.
Sunshade Canopy Sunshade Canopy Vinyl or aluminum canopies attach to Roll-over Protection Structure (ROPS) to limit exposure to direct sunlight, reducing eyestrain and increasing operator comfort.
WeatherBeater™ Winter EnclosureFull-view Winter Enclosure provides protection from wintery conditions for maximum comfort and productivity. Optional electric windshield wiper, LED work lights and beacon strobe light also available. Front panel kit and counterweight are required.
Yellow Beacon LightYellow beacon attaches to OPS to provide greater visibility in high-traffic areas.
Radiator Cleaning WandMulti-channel sprayer combs water pressure between radiator fins without damage, dislodging packed-in dust and debris that can become an invisible source of engine overheating.

"We have owned a 700 series mower for 14 years to mow our 5 plus acre yard, but after our retirement my wife Sue said she would like to help out with the mowing so we went to our Grasshopper dealer in Greenville Ky. (4-Seasons outdoor equipment) where Mike Mundy gave her a great deal on a new 700 series mower. So now we share the mowing duties, and truly love our Grasshoppers."

— Fred B, Central City, KY


"My wife and I retired and bought an eleven-acre corn field. I mow about 3 1/2 acres which use to take me about 14 hours to mow. The cut was all but useless. It was with a regular mower. I saw an add for your zero-turn mower, now I do it in about three hours. The cleaning of the unit is almost effortless. The cut looks professional and the unit is very easy to maintain. If you want a mower that is easy to take care of and want a professional cut, no doubt, get a grasshopper. you will be amazed! Thank you for my Hopper."

— Angelo S, Greenville, PA


"I purchased my Grasshopper in January, 2009. Since I purchased it, all of my friends and neighbors are fascinated with the ease and level of performance of this amazing machine. One of my neighbors had already purchased a Grasshopper, and after watching mine perform, another friend and another neighbor are contemplating buying one. This amazing machine cuts a six acre pasture in one and a half hours, compared to four hours, previously, with my tractor and Bushhog. On a hot day like the ones we are having this summer, that could be a life saver. Those are just some of the reasons that my Grasshopper is "So Much Mower." It underscores the slogan on the Grasshopper cap that says: "Grasshopper, your next mower.""

— Ardean S, Smithdale, MS