MODEL 729 BT

Delivering maximum productivity and versatility, the Model 729BT offers powerful performance that can meet the demands of rugged daily use, while providing superior operator comfort.


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.
  • 896 cc, air-cooled OHV Vanguard Big Block V-twin engine with horizontal crankshaft for longer life
  • Tandem Parker pumps-in-reservoir transmission with design-matched Parker high-torque wheel motors
  • In-line CoolFan™ cooling system for cooling efficiency and long service intervals
  • Delivers smooth response and requires less maintenance, with industry-leading 1,000-hour fluid change interval
  • 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
Single-fork Tail Wheel
  • Single-fork tail wheels enhance weight distribution, improve stability and enhance castering effect when maneuvering.
QuikConverter™ Implement Capability
  • Add or remove implements in minutes without tools with QuikConverter™ Implement System
  • Equip your out-front mower with a wide range of tools, including turf cleanup, renovation and snow removal implements that extend your productivity year-round

Type/Horsepower/Cylinders
B&S Vanguard Big Block, V-Twin
Displacement
54.7 cu. in. (896 cc)
Lubrication System
Pressure Lube/Filter
Crankshaft
Horizontal
Cooling System
Air
Fuel
Gasoline - unleaded
Fuel Capacity
7.2 U.S. Gal. (27.3 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), 504571(72)
DURAMAX® DECK SIZE
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
*
– 61" Deck
*
– 72" Deck
*
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
(3) 21 in. (53.3 cm)
– 72" Deck
(3) 25 in. (63.5 cm)
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 housing. Machined aluminum housing on 52- and 61-inch deck. Cast iron on 72-inch deck.
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
8.5 in. (21.6 cm)***
– 72" Deck
13.75 in. (34.9 cm)***
Battery (maintenance-free)
12 Volt
Starter
Solenoid shift
Ignition
Breakerless
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 and parking brake warning lights, digital hour meter, work lights, ignition and push/pull PTO switches. Choke integrated with throttle lever.
Work Lights
Standard - LED
Hour Meter
Standard
Type
T6® hydrostatic transmission with tandem 16 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 - 10.0 mph (0 - 16.1 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, HydraSmooth™, 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
13x6.50x6 rib tread, pneumatic (2)
Wide Stance Single Fork Tail Wheel
NA
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
9x3.50x4 (flat proof), 4-ply rated
– 72" Deck
13x6.50x6 rib tread, pneumatic, 4-ply rated
Height (Seat Back)
47.0 in. (119.4 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
107.5 in. (273.0 cm)
– 72" Deck
117.5 in. (298.5 cm)
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
91.0 in. (231.1 cm)
– 72" Deck
104.0 in. (264.2 cm)
(Deck Raised - Flipped)
– 48" Deck
NA
– 52" Deck
88.5 in. (224.8 cm)
– 61" Deck
91.0 in. (231.1 cm)
– 72" Deck
104.0 in. (264.2 cm)
Deck Width (Side Discharge)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
65.5 in. (166.5 cm)
– 61" Deck
74.5 in. (189.2 cm)
– 72" Deck
85.5 in. (227.3 cm)
Deck Width (Mulch*)
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
53.5 in.* (135.9 cm)
– 61" Deck
62.5 in.* (158.8 cm)
– 72" Deck
73.5 in.* (186.7 cm)
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
1300 lbs. (589.7 kg)
– 61" Deck
1350 lbs. (612.3 kg)
– 72" Deck
1475 lbs. (669.0 kg)
FrontMount Power Unit Only (uncrated)
930 lbs. (421.8 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
420 lbs. (190.5 kg)
– 72" Deck
545 lbs. (247.2 kg)
Mulching Package
– 41" Deck
NA
– 44" Deck
NA
– 48" Deck
NA
– 52" Deck
29 lbs. (13.2 kg)
– 61" Deck
36 lbs. (16.3 kg)
– 72" Deck
44 lbs. (20.0 kg)

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

  • 52-, 61- or 72-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-, 61- or 72-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-, 61- or 72-inch 35R Series dedicated 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.
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.
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.

"My first zero turn mower, WOW, I didn't know what I was missing! I cut my mowing time in half and my lawn looks awesome! The Power Vac Collection System did a great job on the fall leaves and was a huge time saver, I did not even have to leave my seat! The power fold deck makes maintenance a breeze. The mower is comfortable to ride and easy to maneuver around trees as well as under bushes and fences. Clean up is a piece of cake, no awkward maneuvers to clean the deck or change the blades. I look forward to mowing the lawn every time. My wife even enjoys mowing the lawn too! This mower has been a huge blessing it's given me more time to spend with my wife, children and grandchildren. Thank you Grasshopper! "

— Steven W, Springfield, MO


"I was very sick in 2011. I was in the hospital from Oct. 31 2011 to March 7, 2012. When i came home I could no longer walk. With the help of a lot of therapy I got strong enough to walk again, but my feet are still numb and I have a lot of back pain. I could no longer use my old lawn mower. I needed a lawn mower I could drive with my hands and that I could raise the mower deck with out straing my back, The [Grasshopper] lawn mower fit my every need. The easist lawn mower to mow with made on the market today."

— Jim T, Lost Creek, WV