Z915E ZTrak™ Zero-Turn Mower

Z915E ZTrak™ Zero-Turn Mower


  • 7-Iron™ II Mowing Deck
  • Gasoline Engine
  • Hydrostatic Drive Train
  • Commercial-grade Operator Seat
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Easy-to-operate height-of-cut adjustment enables on-the-go changes

Mower deck height adjustment knob Mower deck height adjustment knob

An easy-to-use cutting-height lift system allows the operator to adjust the mower deck height with no tools and minimal effort. The easy-to-grip knob allowsallows operators to dial in the desired height of cut (HOC).

Cutting height can be adjusted from approximately 1 in. to 5.5 in. (2.5 cm to 14 cm). Each increment on the knob adjusts the HOC approximately 0.25 in. (0.64 cm). The deck can also be raised and locked in a transport position to provide maximum ground clearance when moving the machine from one area to another.

The transport lock function allows the deck to be returned to the previous HOC after being in the transport position:

  • Use the foot-lift pedal to lift the deck and engage the transport lock.
  • Rotate the knob to adjust from 1 in. to 5.5 in. (2.5 cm to 14 cm) in 0.25-in. (0.64 cm) increments.

This design increases productivity by allowing operators to change the cutting height without having to leave the seat.

Durable 7Iron™ II decks pressed from a single piece of steel

60-in. (152-cm) mower deck shown on Z915E 60-in. (152-cm) mower deck shown on Z915E
48-in. (122-cm) mower deck shown on Z915E 48-in. (122-cm) mower deck shown on Z915E

The ZTrak™ E Series Mowers are equipped with a side-discharge, 7Iron II mower deck.

7Iron II mower decks have demonstrated quality, performance, and durability. They deliver a high quality cut in diverse conditions.

Key features of the 7Iron II mower deck:

  • Deck is stamped from 7-gauge, 0.179-in. (4.6-mm) steel to minimize the number of welds and provide a smooth underside, with fewer sharp corners, for reduced material buildup.
    • This design minimizes the number of welds on the deck shell itself.
  • There is an anti-skid pad on the top corner of the trim side of the deck.
  • High blade tip speed - 18,500 fpm (5,638.8 m/min) for more blade cuts per inch mowed.
  • A deep-deck design of 5.5 in. (14 cm) delivers excellent airflow so material can be processed quickly and efficiently.
  • The wide and high discharge opening provides even clipping dispersal for an excellent finished appearance in all conditions.
Mower leading-edge reinforcement Mower leading-edge reinforcement
Double captured anti-scalp wheel Double captured anti-scalp wheel
  • Deck has rectangular leading deck edge reinforcement, and the rounded corners of the stamped deck help distribute impact stress to reduce the potential of damage when the mower contacts trees, rocks, curbs, and other fixed obstacles.
  • Dual-captured anti-scalp wheels on the front of the deck provide flotation over even the toughest terrain. 
  • Three 1-in. (2.54-cm) cold-forged spindles are heat-treated for strength without bulk and are supported by ball bearings, providing reliability and performance; spindle housings are ribbed cast aluminum, providing both excellent strength and heat dissipation.
  • The front edge is raised above the blade plane to allow even cutting of tall grass and is reinforced with a square bar for durability. The front baffle has been designed to better manage airflow and control clippings.
  • Grease fittings on each of the three spindles are accessible from the top.
  • Blade overlap is 1.6 in. (40.6 mm), to reduce striping between blades.
  • Quick-change cutting-height adjustment.
7Iron II mower deck

The Z915E is available with a choice of mower decks:

  • 48 in. (122 cm)
  • 54 in. (137 cm)
  • 60 in. (152 cm)

The Z915E uses a vertical-shaft engine. The power take-off (PTO) clutch is located on the bottom of the engine with the belt extending from the clutch to the mower deck, which is turned on and off by an electromagnetic clutch.

Powerful 25.0-hp (18.6-kW) commercial grade engine delivers class-leading performance and efficiency

Z915E engine Z915E engine

The Z915E is powered by an air-cooled, vertical shaft engine:

  • 25.0-hp (18.6-kW) gas engine

Engine features include:

  • Overhead valve design
    • More horsepower and torque per cubic inch of displacement
    • Fuel efficient design
  • Full-pressure lubrication with full-flow filter
    • Reduces engine wear by ensuring proper lubrication, even when operating on hillsides or uneven terrain
    • Oil filter helps keep oil clean for increased engine life
    • V-twin big block design
  • Vertical shaft
  • Easy-access, dual-element air filter with quick-release latch
  • 15-amp alternator
  • Fuel pump
  • Complies with strict Environment Protection Agency (EPA) and Califorinia Air Resources Board (CARB) emission standards without loss of horsepower or torque
  • Aluminum block engines
    • Effectively dissipate heat
    • Lightweight and strong construction
    • Extend engine life due to elimination of debilitating engine temperatures
    • Air-cooled engine design

Spindle assembly provides greater performance and reliability

Spindle assembly Spindle assembly

On every John Deere ZTrak™ mower deck, there are three 1-in. (2.5-cm) spindles that are cold-forged and heat-treated for strength without bulk. The spindles are supported by precision ball bearings, providing great performance and reliability.
The spindle housing is made of aircraft-grade, ribbed cast aluminum. This unique casting design embosses reinforcing gussets in the housing, which adds both strength and cooling surface area that stands up to commercial applications.
These spindles can be greased from the top and require no disassembly to reach. Grease channels provide lubrication to both bearings.

Seat choices offer exceptional operator comfort

Deluxe comfort seat Deluxe comfort seat

There are two seating options available on the E Series,

  1. A deluxe comfort seat with armrests and fore/aft seat slide
  2. A deluxe comfort seat with armrests and isolation and fore/aft seat slide

The deluxe comfort seat is standard on all Z900 Series models:

  • A convenient seat latch makes it easy to lift the seat.
  • Factory installed.
Deluxe comfort seat with armrests and isolation Deluxe comfort seat with armrests and isolation
Fore/aft system control lever Fore/aft system control lever

The deluxe comfort seat with armrests and isolation is available on the E, M, and R Series. This seat includes a fore/aft seat slide that reduces vibration and increases operator comfort. The benefits of the fore/aft seat slide include:

  • Significant enhancement to ride comfort
  • Ability to lock out if not required
  • One lever for three functions
    • Slide seat forward and backward
    • Activate fore/aft seat suspension
    • Lock out fore/aft seat suspension
  • Rubber springs are provided for isolation from the seat base and to increase ride comfort.
  • A convenient seat latch makes it easy to lift the seat.
  • Factory installed on Z900s ordered with the deluxe comfort seat with armrests and isolation option

Michelin® X® Tweel® Turf airless radial tire technology for ZTrak™ Mowers eliminates downtime and reduces cost of operation

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 for the ZTrak Z900 Series Mowers.

Michelin is a world leader in tire manufacturing and technology. This airless radial tire solution is an industry first for John Deere, which provides an additional advantage to John Deere customers.

Advantages of the Michelin X Tweel Turf include:

  • Mowing performance is improved.
    • 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.
    • Excellent curb climbing is possilbe 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
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 54-in. (137-cm), 60-in. (152-cm), or 72-in. (183-cm) John Deere ZTrak 900 B/E/M/R Series Mower with 24x12-12 tires.
  • 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.

NOTE: Tweels are not compatible with the ZTrak Z997R Diesel.

Michelin, X, and Tweel are trademarks of Michelin North America, Inc.

Mower is easy to service with many accessible components

Z925M front view shown Z925M front view shown
Z925M rear view shown Z925M rear view shown
Z925M side view shown Z925M side view shown

The design of the Z900 Series makes many service components reachable and easily accessible from the ground.

  • Large, open engine compartment at the rear of the machine provides convenient servicing and ensures the engine heat is directed away from the operator.
Flip-up foot panel Flip-up foot panel
Flip-up seat Flip-up seat
Onboard maintenance chart
Maintenance chart Maintenance chart

All ZTrak™ Mowers come with an onboard maintenance chart that is conveniently located inside the right-hand console. The service interval chart gives necessary service intervals.

Hourmeter (M Series pictured) Hourmeter (M Series pictured)
Diagnostic chart Diagnostic chart

The hourmeter shows the number of hours the machine is run when the key switch is in the on position. It only counts the hours the engine is actually running. Machine diagnostics are the first step of a monitoring system to help operators quickly diagnose common downtime issues. A trouble code light is included on the hourmeter.


Use of the hourmeter and service interval chart helps determine when the machine will need service.

Durable hydrostatic drive-train that delivers better cooling and provides easy access

Heavy-duty ground drive Heavy-duty ground drive

The hydrostatic drive features two 13-cc (0.8-cu in.) unitized hydraulic pumps combined with commercial-grade, heavy-duty wheel motors into a single unit.

One pump and one motor drive each wheel on the ZTrak E and M Series Mowers. This provides several benefits:

  • Exceptional cooling in high-load conditions
  • Easy-to-check level and refill hydraulic oil
  • Opens up access under the seat

Three-year, bumper-to-bumper warranty

Z930M ZTrak Mower Z930M ZTrak Mower
Z970R ZTrak Mower Z970R ZTrak Mower
E and M Series three-year, 1200 hour bumper-to-bumper warranty

An exclusive two-year, unlimited hour/three-year, 1200-hour (whichever comes first) bumper-to-bumper warranty is standard for all John Deere E and M Series Mowers. The warranty is best in its class and places John Deere at the forefront of commercial mowing. It is also hassle free, with one company handling all of the paperwork.

NOTE: 36 months or 1200 hours, whichever comes first. For the first 24 months, there is no hour limitation.

R Series three-year, 1500 hour bumper-to-bumper warranty

An exclusive two-year, unlimited hour/three-year, 1500-hour (whichever comes first) bumper-to-bumper warranty is standard on all John Deere R Series mowers. The warranty is best in the industry and puts John Deere at the forefront of commercial mowing. It is also hassle free, with one company handling all of the paperwork.

NOTE: 36 months or 1500 hours, whichever comes first. For the first 24 months, there is no hour limitation.



Model no. CV742
Horsepower (gross) At 3,600 rpm, 25 hp
18.6 kW
Displacement 45.6 cu in.
747 cc
Cylinders Two
Crankcase capacity With filter, 2 U.S. qt
1.9 L
Oil filter Full flow, replaceable
Lubrication Full pressure
Cooling Air
Air cleaner Pre-cleaner
Heavy-duty canister type with safety element

Fuel system

Fuel type Gasoline
Fuel consumption Under normal conditions, load, operation, and dependent on loads and operating conditions 1.1-1.9 U.S. gal./hr
4.2-7.2 L/hr
Fuel tank capacity 11.5 U.S. gal.
43.5 L
Fuel tank switch/shut-off valve Yes

Electrical system

Charge system 15 amp
Battery voltage 12 V
Cold cranking amp 300 amp
Hour meter Standard, digital
Operator presence starting system Brake-N-Go (hand)


Wheel motors Tuff Torq heavy-duty integrated piston wheel motor
Travel speed Forward
0-10 mph
0-16.1 km/hReverse
0-4.5 mph
0-7.2 km/h
Speed and direction control Twin levers
Hydraulic capacity 5.9 U.S. qt
5.6 L
Hydraulic oil cooler
Filter Internal, replaceable
Hydraulic pumps


Drive tires 24x9.5-12 (48 in.), 24x12-12 (54 in., 60 in.)
Rear tires
Load rating 4 PR


Dynamic braking Twin levers
Park brake Internal wet disk integrated in the transmission
Park brake actuation Hand brake


Type Electro-magnetic, 200 lb-ft
271 Nm
Drive V-belt

Mower decks

Available widths 48, 54, 60 in.
122, 137, 152 cm
Deck construction One-piece stamped steel with reinforcements
Deck thickness 7 gauge
0.18 in.
4.6 mm
Discharge Side
Height-of-cut range Increments
0.25 in.
0.64 cm
1-5.5 in.
2.54-14 cm
Cutting width 48, 54, 60 in.
122, 137, 152 cm


Length Varies by deck size
Thickness 0.25 in.
0.64 cm
Tip speed Approximately 18,000 fpm
5,486 m/min
Number Three


Caster wheel type Pneumatic Front
Caster wheel size 13x5-6
Front anti-scalp rollers RH, center, LH
Rear anti-scalp rollers Optional


Length 84 in.
213 cm
Width With chute down, 62, 68, 74 in.
157, 173, 188 cm
Height With ROPS up, 73 in.
185 cm
With ROPS down, 47 in.
119 cm
Weight 1,100 to 1,178 lb
499 to 534 kg

Additional information

Date collected 24-Apr-2017