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John Deere Z997M Diesel

 

Features

Fastback™ PRO Rear-Discharge Mower Deck

Top‑down view of zero‑turn mower showing the operator area with a yellow seat, control levers, perforated deck surface, and twin mower housings on either side.

The Fastback™ PRO rear-discharge system improves safety and productivity by minimizing debris throw and allowing closer mowing near obstacles. Ideal for public spaces, it ensures a tidy operation with better debris control around the operator.

7-Iron™ PRO Deck

Studio close-up of a 7-Iron™ PRO Deck

This mower is equipped with a 7-Iron PRO side-discharge deck stamped from 7-gauge steel, offering superior durability and performance. The deck design provides a high-quality cut with excellent material processing and discharge capabilities.

ComfortGlide™ Seat System

Close-up of mower seat with green accent panels and armrests, mounted on a black equipment frame with visible seat adjustment knob, control levers, and roll bar behind.

The ComfortGlide™ seat system features adjustable suspension, allowing operators to transition more smoothly over bumps. It can adjust fore and aft, absorbing impacts for reduced operator fatigue during long hours of operation.

Specifications

Mower Decks

Mower Deck Size60-in. (152-cm) 7Iron™ PRO side-discharge; 72-in. (183-cm) 7Iron™ PRO side-discharge; 60-in. (152-cm) FastBack™ PRO rear-discharge; 72-in. (183-cm) FastBack™ PRO rear-discharge
Deck Construction7-Iron™ PRO: 7-gauge, 0.179-in. (4.6-mm) one-piece forged steel; FastBack™ PRO: 7-gauge, 0.179-in. (4.6-mm) fabricated steel
DischargeSide-discharge, Rear-discharge
Height-Of-Cut Range1-5.5 in.
Height-Of-Cut Range2.5-14.0 cm
Height-Of-Cut Increments0.25 in.
Height-Of-Cut Increments0.64 cm
Cutting Width60/72 in.
Cutting Width152/183 cm

Drivetrain

TransmissionHydrostatic
Wheel MotorsHydro-Gear HGM18L 17.8 cu in. (292 cc)
Speed Range0-11.5 mph
Speed Range0-18.5 km/h
Forward Speed0-11.5 mph
Forward Speed0-18.5 km/h
Reverse Speed0-5 mph
Reverse Speed0-8 km/h
Speed Direction And ControlZero turn
Hydraulic Capacity3.2 U.S. qt
Hydraulic Capacity12.1 L
Hydraulic Oil CoolerYes
FilterSpin-on Type

Tires

Drive Wheels26x12-12 square shoulder 4-ply turf, optional 26x12-12 Michelin Tweel turf tires
Rear Tires26x12-12 square shoulder 4-ply turf, optional 26x12-12 Michelin Tweel turf tires
Load Rating4 PR

Dimensions

Length60-in. (152-cm) side-discharge: 96 in. (244 cm)
Width - With Chute Down 74, 86 in.
Width - With Chute Down188, 218 cm
Width - Rear Discharge63.5, 75.8 in.
Width - Rear Discharge161.3, 192.5 cm
Height - With ROPS Up77.3 in.
Height - With ROPS Up196 cm
Height - With ROPS Down50.9 in.
Height - With ROPS Down129 cm
Weight2180 to 2313 lb.
Weight989 to 1049 kg

Operation

Rollover Protective Structure (ROPS)Yes
Slope Operating Limit17 degree (angle)

Wheels

Caster Wheel TypeFlat free
Caster Wheels15x6-6
Front Anti-Scalp RollersLeft, center, right
Rear Anti-Scalp RollersLeft, center, right

Brakes

Dynamic BrakingDual hand controlled levers
Park BrakeInternal wet disk integrated in the transmission
Park Brake ActuationAutomatic engagement when steering levers are outward

Fuel System

Fuel TypeDiesel or Biodiesel (up to B20)
Fuel Tank Capacity12 U.S. gal.
Fuel Tank Capacity45.4 L
Fuel Tank Switch/Shut-Off ValveYes

Engine

Engine Manufacturer/Model3TNV88C
Engine PowerGross at 3,000 rpm, PS: 37.4 hp (27.5 kW)
Displacement100.2 cu in.
Displacement1642 cc
Cylinders3
Crankcase Capacity3.8 U.S. qt
Crankcase Capacity3.6 L
Oil FilterFull flow, replaceable, spin-on type
LubricationFull pressure
CoolingLiquid
Air CleanerHeavy-duty canister, dry type with safety element and air-restriction indicator
Pre-CleanerYes

Additional Information

Date Collected11/01/2025 11:56:00

Blades

LengthVaries by deck size
Thickness0.25 (0.64 cm)
Blade Tip Speed7Iron PRO: Approximately 18,000 fpm; 60-in. (152-cm) FastBack: Approximately 15,000 fpm; 72-in. (183-cm) FastBack: Approximately 17,000 fpm
Number3

PTO

TypeHydraulic clutch
DriveInternal wet disk clutch

Electrical System

Charge System150 amp
Battery Voltage12 V
Cold Cranking Amp At 18 Degrees C490 amp
Hour MeterDigital multi-function display
Operator Presence Starting SystemStandard

Buyer's note

Warranty36 months or 1500 hours, whichever comes first, no hour limitation for the first 24 months.