John Deere Z997R Diesel
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  • Deluxe comfort seat is fully adjustable and includes ComfortGlide™ fore/aft suspension
    Suspension seat Suspension seat
    Seat adjustment controls Seat adjustment controls

    The deluxe comfort professional-grade seat is included in base equipment. It provides the operator with an enjoyable ride by allowing the operator the ability to adjust the seat to their preference. It includes:

    • 24-in. (60.9-cm) high-back seat
    • Suspension-reaction dial that adjusts vertical suspension for operator weight and a firm or soft ride
    • Adjustable armrests
    • Adjustable back angle
    • ComfortGlide suspension with 2-in. (50.8-mm) fore/aft seat travel to absorb bumps
    • Vibration reduction
    • 3-in. (7.6-cm) fore-aft adjustment while operator is seated
    • Retractable seatbelt
    ComfortGlide fore/aft suspension control lever ComfortGlide fore/aft suspension control lever

    ComfortGlide fore/aft suspension gives superior ride comfort over uneven areas:

    • Seat can travel up to 2 in. (50.8 mm) fore and aft to absorb bumps for a significant enhancement to ride comfort.
    • Control lever provides the ability to easily lock out fore/aft suspension movement if desired.
    • One lever has three functions.
      • Slide seat forward and back 3 in. (10.2 cm) to allow the operator the ability to choose the leg room needed
      • Activate Comfort Glide fore/aft seat suspension
      • Lock out Comfort Glide fore/aft seat suspension
  • Standard operator comfort and convenience package for ease of use
    Operator platform Operator platform

    The Z997R Diesel ZTrak™ Mower is ergonomically designed to give the operator an enjoyable and comfortable ride while increasing productivity.

    Two-lever hydrostatic drive control
    • Commercial cutter can select the ground speed and direction control simply by moving levers forward or in reverse.
    • Positive neutral lock position for levers provides added safety.
    • Wide-bend steering levers swing out easily for entry and exit from the operator platform.
    Comfort and convenience handles Comfort and convenience handles

    The comfort and convenience package includes large, ergonomically angled control levers with specially padded grips and built-in electronic controls to raise or lower the mower deck and disengage the mower blades.

    Control buttons Control buttons

    The push button (A) on the left motion control lever raises the mower deck. The push button (B) on the right-hand control lever shuts off the power take-off (PTO).

    Once the PTO has been shut off using the button, the PTO switch must be pushed down and pulled up again to engage the PTO.

    Easy to engage park-brake lever
    Park-brake lever Park-brake lever
    • Positive park position allows the operator to park on hillsides and lock the park brake during
      trailer transport.
    • Park brake automatically disengages the machine during panic stop, for added safety.
  • Two 7-Iron™ PRO Side-Discharge Mower Deck options for the Z997R give superior performance in every application
    Z997R shown with 72-in. (183-cm) 7-Iron PRO side-discharge mower Z997R shown with 72-in. (183-cm) 7-Iron PRO side-discharge mower

    There are two side-discharge mower-deck options available for the Z997R Diesel ZTrak Mower:

    • The 60-in. (152-cm) 7-Iron PRO side-discharge deck is suited to a variety of mowing jobs, including trimming and grooming.
    • The 72-in. (183-cm) 7-Iron PRO side-discharge deck is suited to a variety of mowing jobs, including trimming and grooming on larger properties.
    Extra reliability and long life with cast-iron blade spindle housings
    Cast-iron mower spindle Cast-iron mower spindle
    Cast-iron mower spindle Cast-iron mower spindle

    On every commercial mower deck there are three 1-in. (25-mm) spindles that are cold-forged and heat-treated for strength. Spindles are supported by precision ball bearings that provide great performance and reliability.

    • Superior impact strength provided by ductile cast-iron material.
    • Gusseted design puts reinforcement where it is needed.
    • Strength of cast iron protects against damage from blade impacts.
    • Easy access grease fittings are mounted at the top of the spindle shafts for convenience.
    • Grease pressure-relief valve minimizes seal damage from overfilling with grease and keeps debris from entering housing.
    • Chance of deck shell damage is minimized with the 8-in. (20.3-cm) diameter housing and six mounting bolts that distribute loads and impacts.
    • Ability to be reliably rebuilt is provided by use of cast iron.
    Shaft-drive mower deck is durable and reliable
    PTO shaft drive (shown on 997 model) PTO shaft drive (shown on 997 model)

    Mower decks are shaft driven. Benefits of using this type of system include:

    • Live independent power take-off (PTO) powers the mower deck.
    • PTO can be engaged or disengaged on the go for greater productivity.
    • Hydraulic PTO clutch has delay relief valve for soft engagement.
    • Wet clutch is designed for long life.
    • PTO is easily accessible.
    • 250-lb-ft (339-Nm), heavy-duty hydraulic clutch provides long life.
    • Splined PTO shaft transfers power to the cast-iron gearbox.
    60-in. (152-cm) 7-Iron PRO mower deck
    60 in. (152-cm) 7-Iron PRO mower deck shown 60 in. (152-cm) 7-Iron PRO mower deck shown

    Features include:

    • Higher blade tip speed - 18,000 fpm (5486 m/min) gives more blade strikes per distance of forward travel.
    • Front baffle is designed to better manage airflow and control clippings.
    • Ductile cast-iron blade-spindle housings have a gusseted design for extra reinforcement.
    • Spindle-pocket reinforcement for even greater structural durability.
    • A raised discharge chute provides even clipping distribution.
    • 7-gauge, 0.179-in. (4.5-mm) steel construction gives commercial durability.
    • 3-spindle design provides a smooth, even cut.
    • Plastic discharge deflector reduces damage to foliage and resists bending.
    • Formed, steel-deck design is stamped from a single sheet of steel to eliminate corners where grass can collect.
    • Deep deck gives increased vacuum action that reduces dropped clippings.
    • Shaft drive from engine to mower gives excellent reliability.
    • Belt drive efficiently transfers power from gearbox to spindles.
    • Grease fittings are greased from the top for easy access.
    • Quick-change cutting-height adjustment is easy to use.
    • Tricycler mulching kits are available.
    • Blade overlap of 1.57 in. (40 mm), nearly 0.79 in. (20 mm) greater than previous decks, reduces the number of missed grass blades.
    72-in. (183-cm) 7-Iron PRO mower deck
    Z997R with 72-in. (183-cm) 7-Iron PRO mower Z997R with 72-in. (183-cm) 7-Iron PRO mower
    72-in. (183-cm) 7-Iron PRO mower deck 72-in. (183-cm) 7-Iron PRO mower deck

    Features include:

    • Higher blade tip speed - 18,000 fpm (5486 m/min) gives more blade strikes per distance of forward travel.
    • Front baffle is designed to manage airflow and control clippings.
    • Spindle pocket reinforcement gives greater structural durability.
    • Ductile cast-iron blade-spindle housings have a gusseted design for extra reinforcement.
    • A raised discharge chute provides even clipping distribution.
    • 7-gauge, 0.179-in. (4.5-mm) steel construction gives commercial durability.
    • 3-spindle design gives a smooth, even cut.
    • Plastic discharge deflector reduces damage to foliage and resists bending.
    • Formed, steel-deck design is stamped from a single sheet of steel to eliminate corners where grass can collect.
    • Deep deck gives increased vacuum action that reduces dropped clippings.
    • Shaft drive from engine to mower gives excellent reliability.
    • Belt drive efficiently transfers power from gearbox to spindles.
    • Grease fittings are greased from the top for easy access.
    • Quick-change cutting-height adjustment is easy to use.
    • Tricycler mulching kits are available.
    • Blade overlap of 1.57 in. (40 mm), nearly 0.79 in. (20 mm) greater than previous decks, reduces the number of missed grass blades.

     

      60-in. (152-cm)
    Side-Discharge

    72-in. (183-cm)
    Side-Discharge

    Mower type 7-Iron PRO - stamped deck 7-Iron PRO - stamped deck
    Mower compatibility:    
         Discharge Side

    Side

         Mulching capability Optional field-installed kit Optional field-installed kit
         Cut-height range

    1.5-5 in. (3.8-12.7 cm)
    0.25 in. (1.3-cm) increments

    1.5-5 in. (3.8-12.7 cm)
    0.25 in. (1.3-cm) increments

         Cutting width 60 in. (152 cm) 72 in. (183 cm)
         Height-of-cut adjustment Turning knob with foot assist Turning knob with foot assist
    High lift blades:    
         Blade length 21 in. (53 cm) 25 in. (64 cm)
         Blade width 3 in. (7.6 cm) 3 in. (7.6 cm)
         Blade thickness 0.25 in. (6.35 mm) 0.25 in. (6.35 mm)
         Blade tip speed 17,480 fpm (5.3 km/m) 17,500 fpm (5.3 km/m)
         Number of blades Three Three
    Blade spindles:    
         Bearings Grade=ABEC-1 Grade=ABEC-1
         Spindles Cold-forged and heat-treated Cold-forged and heat-treated
         Spindle housings Ductile cast-iron Ductile cast-iron
    Wheels:    
         Front anti-scalp rollers Standard Standard
         Rear anti-scalp rollers Standard

    Standard

    Deck construction One-piece stamped steel One-piece stamped steel
    Deck thickness 7-gauge steel
    0.179 in. (4.5 mm)

    7-gauge steel
    0.179 in. (4.5 mm)

     

    Mower decks are safety certified
    Z950M ZTrak Mower Z950M ZTrak Mower

    Mowers decks are evaluated by the manufacturer (John Deere Turf Care) and conform to American National Standards Institute (ANSI) B71.4 2004 safety certification specifications for commercial turf care equipment.

  • Heavy-duty frame provides strength and durability
    Z997R with 72-in. (183-cm) side-discharge mower Z997R with 72-in. (183-cm) side-discharge mower
    #

    The durability features of the frame are as follows:

    • Heavy-duty, thick-gauge steel channel mainframe for strength and durability
    • Cast I-beam caster arms to handle the beating and pounding professional mowers receive
    • Wide-open access for maintenance and cleaning
    Durable cast-iron rear bumper provides protection
    Cast-iron rear bumper Cast-iron rear bumper

    A cast-iron rear bumper is provided on the machine for rear protection. It also adds weight to give great hillside performance.

    A rear hitch can be added to a 10-gauge, 0.135-in. (3.4-mm) steel bumper for towing purposes. ZTrak™ Z997R Mowers can tow up to 400 lb (181 kg). 

  • Easily accessed daily service points mean less maintenance time and more working time
    Easy serviceability Easy serviceability
    Rear hood open Rear hood open

    Service components are easy to see and access:

    • Open engine compartment allows full access to engine components and service points.
    • Engine heat is kept away from the operator.
    • Flip-up seat allows easy access to the hydraulic system.
    • Flip-out floor panel allows easy access to deck spindles.
    Hood latch and hood pivots
    Hood latch Hood latch
    Hood opened for access to service points Hood opened for access to service points

    Hood has one central over-center type latch.

     

    The hood pivots to make the hood easier to remove and install for ease of servicing the engine.

    Coolant reserve tank and oil filter Coolant reserve tank and oil filter
    Flip-up deck service panel Flip-up deck service panel
  • Great productivity and lawn appearance with a Fastback™ PRO rear-discharge mower deck
    60-in. (152-cm) Rear-Discharge Mower Deck 60-in. (152-cm) Rear-Discharge Mower Deck
    72-in. (183-cm) Rear-Discharge Mower Deck 72-in. (183-cm) Rear-Discharge Mower Deck

    For professional landscapers and government municipalities requiring rear discharge placement of grass and debris, John Deere Fastback PRO rear-discharge mower decks deliver a commercial zero-turn mowing solution for both gas and diesel machines. Advantages of a rear-discharge mower include:

    • Less chance of damage from objects being thrown from the mower deck
    • Time savings with the ability to mow closely around fixed objects with either side of the deck
    • A cleaner mowing experience by lessening the amount of debris that can blow onto the operator

    A rear-discharge mower deck is ideally suited for:

    • Schools
    • Parks
    • Playgrounds
    • Traffic areas (city boulevards, roadsides, etc.)
    • Areas with long, grassy spots that need to be cut, where you are not as concerned about wide dispersal of grass (park areas, roadsides, etc.)
    Compatibility
    ZTrak™ Z900 Series Model 60-in. (152-cm) Rear-Discharge Mower Deck 72-in. (183-cm) Rear-Discharge Mower Deck
    Z930M X ---
    Z950M --- X
    Z955M EFI X X
    Z950R X ---
    Z955R EFI X X
    Z970R --- X
    Z994R X X
    Z997R X X
    Commercial-quality deck design

    A large volume of material can be thoroughly processed with the deep-deck design:

    • Unique baffling system is designed to reduce clumping and windrowing often associated with rear-discharge mowers.
      • Efficiency is enhanced with baffles surrounding each blade to control material as it is moved to the rear.
      • Material exits the deck quickly as the baffles are lower at the rear.
      • Movement of material is controlled to minimize the likelihood that clippings are thrown onto unwanted areas.
    • Less debris gets on the operator as material is directed to the rear and toward the ground.
      • Debris is kept low and directed into the turf by the flexible rear shield.
    Level cut
    Center deck rollers and left wheel Center deck rollers and left wheel
    Right-rear deck wheel Right-rear deck wheel

    The deck is suspended from and supported by the machine to provide a level cut. Mower deck wheels and rollers help smooth out the mowing job in uneven conditions and reduce the chance of scalping the lawn:

    • Two wide front rollers at the center of the mower support the deck when necessary to prevent scalping.
    • Wheels at all four corners protect the deck from scalping at the sides of the mower.
    • Continued effectiveness results from wheels and rollers that are double captured for extra strength, which reduces the chance of damage.
    • Height of rollers and wheels is adjustable to suit mowing conditions.
      • Higher setting (shown in images) are used when mowing at lower cut heights and for rougher conditions at all cut heights where you want to reduce the chance of the wheels hitting the ground.
      • Lower settings are used for higher cut heights and for helping to smooth out the mowing job.
    • Mower cut height is adjustable from 1 to 5.5 in. (2.54 to 14 cm) in 0.25-in. (0.64-cm) increments from the machine operator’s station.
    Heavy-duty components for long life
    Strong, reinforced deck Strong, reinforced deck
    Right trim-side wear guard Right trim-side wear guard

    These rear-discharge decks are designed to stand up to heavy-duty commercial use:

    • Superior strength and durability come from a 7-gauge, 0.179-in. (4.56-mm) steel deck.
    • Experience extra strength and long life with a fabricated deck design that is formed, welded, and reinforced for extra protection from damage.
    • The front of the deck is protected from damage by a 1.5-in. (3.8-cm) tall by 0.5-in. (1.3-cm) thick solid steel bar welded to the mower deck for additional strength.
    • Both sides of the deck have bumpers that are made from compression molded ultra-high molecular weight (UHMW) polyethylene plastic.
      • The bumpers provide great abrasion resistance to protect the machine and the property.
      • Additional strength is provided by a 0.5-in. (1.3-cm) by 0.5-in. (1.3-cm) thick solid steel bar.
    Universal joint and cast-iron gearbox Universal joint and cast-iron gearbox
    Cast-iron blade-spindle housing Cast-iron blade-spindle housing

    Durability is designed into the mower blade drive system:

    • Reliably powered by a universal joint shaft drive from the vehicle transmission
    • To a heavy-duty right-angle, cast-iron gearbox
    • To a dependable v-belt drive system

    Extra reliability and long life are provided by cast-iron blade spindle housings:

    • Ductile cast-iron material provides superior impact strength.
    • Gusseted design puts reinforcement where it is needed.
    • Strength of cast iron protects against damage from blade impacts.
    • Easy access grease fittings are mounted at the top of the spindle shafts for convenience.
    • Grease pressure-relief valve minimizes seal damage from overfilling with grease and keeps debris from entering housing.
    • Chance of deck-shell damage is minimized with the 8-in. (20.3-cm) diameter housing and six mounting bolts that distribute loads and impacts.
    • Ability to be reliably rebuilt is provided by use of cast iron.
    Ease of service
    Quick-release belt cover Quick-release belt cover
    Cast-iron spindle housing assembly Cast-iron spindle housing assembly

    Minimal service requirements increase uptime:

    • Quick-release belt covers do not require tools or the removal of a ring clip; just lift one corner of the cover and rotate it slightly to remove.
      • A hole in the deck tab is provided for use of an optional ring clip for extra security, if desired.
      • This makes it quick and easy for you to clean out trash that may collect around the spindle sheave.
    • Convenient spindle greasing with fittings at the top of spindle shafts are accessible through a hole in the top of the spindle/belt covers.
      • The center spindle is accessed by no-tools removal of the vehicle floor pan.
    • There is only one belt to service.
    Extra convenience
    Serrated-tread step Serrated-tread step

    Extra convenience and security are provided by a serrated surface that is welded to the top left corner of the deck, providing additional traction when entering and exiting the operator station.

  • Michelin® X® Tweel® Turf airless radial tire technology option for a smoother ride and more uptime
    Michelin X Tweel Turf on Z997R Michelin X Tweel Turf on Z997R
    Flat-free rear tire on ZTrak™ Mower Flat-free rear tire on ZTrak™ Mower

    John Deere leads the commercial zero-turn mower industry with use of the Michelin X Tweel Turf technology.

    Michelin is a world leader in tire manufacturing and technology. This airless radial tire solution is an industry first for John Deere, which provides a smoother ride for the operator and additional advantages to John Deere owners.

    Advantages of the Michelin X Tweel Turf include:

    • Mowing performance is improved.
      • Unique energy transfer within the poly-resin spokes reduces the bounce associated with pneumatic tires, to give a smoother ride.
      • Rutting is reduced because the Michelin X Tweel Turf has more support across the surface for improved flotation and better ground contact.
      • Unique energy transfer within the poly-resin spokes reduces the bounce associated with pneumatic tires, to give a smoother ride.
      • Excellent curb climbing is possible due to the Michelin X Tweel Turf construction and flexibility.
      • More consistent cut quality is achieved because inconsistent tire pressure is eliminated.
    • Uptime is improved.
      • The exclusive technology eliminates downtime and associated cost due to flat or damaged tires. Punctures and sidewall damage no longer result in downtime.
    • Cost of operation is reduced.
      • Cost of repairs and maintenance is reduced. One single unit replaces the current tire, wheel, and valve assembly. There is no need for complex tire-mounting equipment.
      • No need to spend time checking and optimizing tire pressure.
      • The need to purchase and stock plug kits and spare tires is eliminated, particularly for professional landscape contractors and government agencies who normally stock them.
      • The tire tread will last up to three times longer than current pneumatic tires because automotive-grade rubber is used for the tread.

     

    Michelin X Tweel Turf Michelin X Tweel Turf

    Heavy-duty construction provides the ultimate in performance and reliable operation:

    • High-strength poly-resin spokes carry the load.
    • Four-hole, heavy-duty steel hub easily bolts onto any Z997R ZTrak Mower.
    • Deep, open-tread design provides excellent cleaning and traction.
    • Zero degree, high-tensile proprietary carcass provides great lateral stiffness while resisting damage from impact and penetration.
    Tires deliver exceptional traction, maneuverability, and reliability
    Run flat front caster wheel Run flat front caster wheel
    Pneumatic rear drive wheel Pneumatic rear drive wheel

    The ZTrak Z997R Mower is equipped with 15x6-6 flat free front caster tires that provide:

    • Excellent reliability and uptime
    • Low center of gravity to increase hillside mowing capability
    • Caster wheels and caster wheel towers with sealed bearings for long life and easy steering
    • Offset front caster wheels to help improve the inside corner-trim performance and reduce between-blade striping

    A choice of rear wheel options is available for factory installation:

    • 26x12-12 4 PR pneumatic drive tires in base equipment for excellent traction, flotation, and curb climbing
    • 26x12-12 Michelin X Tweel Turf airless radial tire technology option for a smoother ride and more uptime
    Drive tires and caster wheels sized for proper weight distribution and traction
    Turf drive tires Turf drive tires

    The Z997R comes with 26x12-12, square-shoulder, 4 PR turf drive tires as standard equipment.

    Caster wheels
    Caster wheels Caster wheels

    The 15x6-6 smooth-design flat-free front caster wheels provide excellent durability, flotation, and curb climbing. 

    A wide stance increases hillside mowing capability.

    Michelin, X, and Tweel are trademarks of Compagnie Générale des Etablissements Michelin SCA.

  • Quality drive system provides longer life and less maintenance
    Illustration of Kanzaki dual-unitized hydraulic pump Illustration of Kanzaki dual-unitized hydraulic pump

    The hydrostatic drive features a Kanzaki® DUP 17SB dual-unitized hydraulic pump. This dual pump, in a single housing, provides longer life and less maintenance than competitive units.

    The pump features a shaft-driven fan for added cooling and longer component life. The swash-plate bearings are roller-type versus ball-type bearings for a longer overall pump life.

    Illustration of transmission layout Illustration of transmission layout

    The transmission module integrates the dual pumps and steering valves in one single housing. The pump is shaft-driven from the engine. An isolator ensures reduced vibration between the engine and the transmission module. 

    Two wheel motors are installed on the chassis to directly transfer power to both wheels. Commercial-grade, heavy-duty TG0310 18.9-cu in. (310-cc) wheel motors from Parker Ross, part of the Hydraulic Pump & Motor Division of Parker Hannifin®, are also important components of the overall drive system efficiency.

    Rigid hydraulic lines are installed between the hydraulic module and wheel motors for long life.

    Kanzaki is a trademark of Kanzaki Kokyukoki Manufacturing Company. Parker Hannifin is a trademark of Parker Intangibles, LLC.

  • Mower deck height-of-cut adjustment is easy to use
    Control panel including height-of-cut adjustment dial Control panel including height-of-cut adjustment dial
    Height-of-cut adjustment dial Height-of-cut adjustment dial

    Single-touch deck lift system is best in class:

    • No tool required for adjustments
    • Dial-in knob used in conjunction with push button to change the height of cut
    • Easy-to-use design for increased productivity by allowing change of cutting height from the seat
    Mower control buttons Mower control buttons

    The push button (A) on the left motion control lever raises the mower deck. The push button (B) on the right-hand control lever shuts off the power take-off (PTO).
     
    Once the PTO has been shut off using the button, the PTO switch must be pushed down and pulled up again to engage the PTO.

  • Protective zone around the operator is provided by the rollover protective structure (ROPS)
    Z997R with material collection system Z997R with material collection system

    The spacious operator station has been designed for comfort, visibility, and ease of use:

    • Getting on and off is easy with the flat operator platform.
    • Convenient-to-use controls located close to the operator are color coded and designed for easy identification and operation.

    The ROPS and seat belt work in conjunction to provide a protective zone around the operator:

    • It reduces the operator’s risk of being crushed under the vehicle should it overturn.
    • When used with the seatbelt, the ROPS can reduce the severity of injury in the event of a rollover.
      • Use of the seat belt is recommended when operating with ROPS in the upright position.
    ROPS in upright position ROPS in upright position
    ROPS in folded position ROPS in folded position

    Foldable ROPS and a retractable seat belt are standard equipment:

    • Position adjustment pins provide a good grip and make changing the angle of the ROPS easier.
    • If operating in low clearance areas, the ROPS can be folded down and secured out of the way.
    • Under normal operation, the ROPS should be in the upright position.
    • See Operator’s Manual for more information on ROPS.
    • Door height of most garages will accommodate the machine with ROPS in the full-raised position.
      • Easy-fold ROPS improves the ability to store the ZTrak in structures with a lower door opening.

    The retractable seat belt is within easy reach of the operator for use when operating with the ROPS up.

    ROPS are foldable to allow trimming, such as under trees or bushes:

    • To fold, remove two pins and rotate the top of the ROPS.
    • Adjustment can be made from the operator's seat.
    • ROPS must be in the upright and locked position when low clearance is not required.

    The folding ROPS performance is certified at the date of manufacture according to ISO 21299.

    ROPS stabilizer device ROPS stabilizer device

    Stabilizers reduce the amount of movement and noise in the ROPS.

    ROPS position Height at top of ROPS
    Full height 85 in. (216 cm)
    Down 48 in. (122 cm)
  • Powerful diesel engine for increased performance
    3-cylinder diesel engine 3-cylinder diesel engine
    Convenient access to engine Convenient access to engine

    The Z997R is powered by a 3-cylinder, liquid-cooled diesel engine with a gross 37.4 hp (27.5 kW) that meets U.S. Environmental Protection Agency (EPA) Final Tier 4 emission standards. The engine achieves Final Tier 4 compliance by using a diesel oxidation catalyst with diesel particulate filter (DOC/DPF) system.

    The three-cylinder diesel engine features low noise levels, superior fuel economy, and a high torque reserve that provides plenty of power and performance.

    Key features of the engine include:

    • Economical, cast-in block cylinder design gives good cooling and long life.
    • Liquid-cooled design provides more consistent operating temperatures than air-cooled.
    • Direct fuel injection is provided. 
      • Injects fuel directly on top of pistons for more efficient combustion
      • Develops more horsepower per gallon of fuel
      • Improves starting
    • Aluminum alloy pistons with built-in steel struts are lightweight to reduce connection rod bearing loads and provide good heat-transfer characteristics.
      • Design permits tighter tolerances and neutralizes expansion of the piston, thereby reducing blow-by fuel and noise from the piston slap
      • Higher top rings on the piston and a thinner head gasket greatly reduce the volume of unburned waste and increase combustion efficiency
    • Timing gears and injector drive gears utilize helical profile gears to help lower engine noise.
      • Gear teeth have a newly designed ''roll-off'' profile, giving almost no clash, no noise, and no backlash
    • Fuel filter with replaceable element is provided.
    • Full-pressure intake manifold provides quick starts in temperatures down to 0°F (-18°C).
    • Auto-bleed fuel system gives extra convenience. 
      • No need to prime the system if the unit runs out of fuel; the system will self-prime the injection pump, lines and injectors, providing fast fuel recovery
    • Key start and shutoff eliminate fuel shut-off knob; electric solenoid shuts fuel supply off immediately when key is turned off.
    • See-through coolant recovery tank permits operator to check coolant level without removing radiator cap.
    • Sealed radiator compartment keeps trash and debris on outside of hood.
    • Dual-element, dry-type air cleaner with safety element and air service indicator is provided. 
      • Dual-element design for added engine protection
      • Easy to service
      • Completely sealed for effective cleaning and 90 to 95 percent of dirt ejected before it reaches the paper element
      • Secondary safety element for additional filtering
      • Air-restriction indicator to let operator know when the filter needs servicing
    • Full-pressure lubrication with full-flow filter lengthens engine life. 
      • Engine wear reduced by ensuring proper lubrication, even when operating on hillsides or uneven terrain
      • Oil filter helps keep oil clean for increased engine life
    • Automotive-type alternator (75 amp) provides plenty of charge to the battery.
    • Rear-mounted, covered radiator and fan keeps noise away from the operator and is easy to service.
    • Isolated engine mounting reduces engine vibration at operator's station for more comfortable operation.
    Air cleaner filters out dust to extend engine life
    Engine air cleaner Engine air cleaner

    The ZTrak™ Z997R Diesel Mower is equipped with a dual-element, canister-style air filter that is easily accessible from the rear of the machine without tools.

    • Filtration system pulls clean air from above the engine, in turn filtering out the dust that can damage an engine over time.
    • Filters are easy to change when required.
    • Pre-cleaner provides extra protection against contamination in dusty and dirty applications.
    12-U.S. gal. (45.4-L) capacity fuel tank allows the operator to mow for a full day without refueling
    Fuel tank and fuel gauge Fuel tank and fuel gauge
    Diesel fuel cap Diesel fuel cap

    The Z997R Diesel ZTrak™ Mower is equipped with a single fuel tank, providing the following:

    • 12-U.S. gal. (45.4-L) capacity allows the operator to mow for a full day without refueling.
    • Large filler neck makes for easier refueling.
    • Standard fuel gauge is provided.
    • Top fuel draw provides added safety by reducing the chance fuel will leak out.

    NOTE: The fill level is 1 in. (25 mm) below the bottom of the filler neck.

Blades

Number Three
Blade tip speed Side discharge: approximately 18,000 fpm
Rear discharge: approximately 15,000 fpm
Length 60-in. (152-cm) deck: 21 in.
53.3 cm
72-in. (183-cm) deck: 25 in.
63.5 cm
Thickness 0.25 in.
0.64 cm
Varies by deck size and configuration

4.75

4 Reviews
3.5
4.75
5.0
Feb 13, 2016

Awesome mower and so operator user friendly and comfortable seat

5/5

I previously owned a 997 diesel Z-Trak mower with the Izusu diesel engine and 60" side discharge mower deck. Thankfully John Deere went back to the Yanmar Diesel engines because it's night and day difference. My new 997R with a 60" side discharge multch on demand deck is so much quieter with the Yanmar engine and is much more powerful and responsive, I ordered the optional seat suspension which I would highly recommend for a larger operator like myself at 6'3" and 300 #. You can't stall this mower in thick grass and the operator station has been upgraded to more user friendly gauges and especially great are the button controls in the erogonomicaly correct designed handles, which raise the deck or stop the mower deck with the simple push with your thumb. Awesome feature ! I also suggest getting the rear bumper option which protects the engine cab completely. John Deere also brought the sides of the machine inward so you don't rub the side of your machine against tree trucks any more like my old 997 did...nice feature too. Highly recommend this machine if you have a large lawn to mow with a lot of trees to mow around !!

Bryant

  • From: Burnt Hills, NY
  • Usage Frequency: Weekly
  • Level of Experience: Expert
5
5
5
Nov 23, 2019

The diesel engine is the only way to go for a commercial mower.

4/5

I had one the only problem with this machine is with a rear discharge the outside of the radiator becomes plugged up and the machine over heats. It needs a reversible fan to keep the radiator cleaned to prevent overheating.

Randyk

  • From: Texas
  • Usage Frequency: Weekly
  • Level of Experience: Expert
2
4
5
May 06, 2015

Amazing machine!

5/5

Just replaced a diesel SCAG Turf Tiger with this thing. Amazing power behind the 72" deck, no bogging in thick Bermuda. Even at 50-75% throttle I couldn't provoke it to stall.....Unbelievable power, actually!!! This thing is heavy at 1800-ish pounds, but it makes the ride smooth. Ordered mine with Kenda Executioner tires. So much torque on tap, I'd bet it would spin the tires and tear up grass with standard turf tires. Quiet, comfortable, powerful, responsive and love the hydraulic deck lift..... Look forward to mowing my vineyard theses days... :)

SoonerMD

  • From: Oklahoma City, OK, USA
  • Usage Frequency: Weekly
  • Level of Experience: Expert
4
5
5
Oct 18, 2020

Z997R 2017 with 90 hour

5/5

I had a commercial pro series 1999 Dixie Chopper with a 25 hp Koehler command pro that has approximately 2500 hours and is just started giving me some trouble. So I purchased the Z997R and really like the way it cuts. It has an excellent cut quality. It will go through thick heavy even wet grass with no problem. Its fast forward. I like the rear opening hood (even is removable with just two pins) the seat opens forward to give you wide open access to the engine and transmission. It has large oil and fuel filters with a very large hydraulic revivor plus its very easy to check the hydraulic fluid level. It will cut 6-8 hours on one tank of fuel. Traction seems to be better than my Dixie Chopper, will tear the grass if you turn fast and hard. I think its because of the big rear tires and weight, the tire are 26" x 12" which I like. Ok some of my dislikes. Its slow in reverse only 5 mph. The rear hood screen and coolers get clogged very quickly you have to clean them every time you mow or the hydraulics will overheat ( have not had that problem yet because I clean it every time) The hydraulic tank and the instrument cluster are one large plastic molded piece. It should have been two separate parts. The deck lift does not have any zerk fittings on any of the rotating parts. It squeaks every time its raised or lowered. I can hit it with spray lubricant and within 2 or 3 time cutting its squeaking again.

wdckellogg

  • From: North Mississippi
  • Usage Frequency: Weekly
  • Level of Experience: Expert
3
5
5