John Deere Z320R ZTrak™ Mower, 42-in. Deck

Premium engine is powerful, reliable, and durable

A 21.5-horsepower (16.0-kW) V-Twin engine with 44.3 cubic inch (726cc) displacement provides plenty of power and torque to handle tough mulching, mowing, and bagging conditions.

• V-Twin cylinder design for greater torque, lower vibration, and improved sound quality.
• Full-pressure lubrication and cast iron sleeves to extend engine life.
• Engine Model: FR651V
• Rear engine guard protects the engine from damage.

Simplify maintenance with oil drain tube and easy-to-access air, fuel, and oil filters. Oil drain tube can be opened without tools and used to direct the used oil into a catch pan.

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Get an even cut with the 42-inch (107-cm) Accel Deep™ (42A) Mower Deck

The 42-inch (107-cm) Accel Deep™ Mower Deck is a stamped steel, deep, flat-top design that delivers excellent cut quality, productivity, cleanliness, durability, and versatility. Optimal performance and dispersion of clippings is provided, even at faster mowing speeds or in tall grass.

• 4.97-inch (12.6-cm) deep throughout the entire deck shell for optimum mowing, mulching, and bagging performance.
• Optional MulchControl™ system provides superior mulching performance and versatility.
• Stamped steel design eliminates sharp edges and corners where material can build up and diminish mowing performance.
• Mower deck suspended from the vehicle for a smooth and level cut.
• Adjustable mower wheels, positioned just above ground level, help reduce scalping.
• 0.25-inch (6.4-mm) cut height increments allow the mower to be set at the desired cut height.
• Compatible with efficient 6.5-bushel (230-L) two-bag cut-and-throw material collection system.

Deep mower deck stamping gives excellent cut quality. It allows the cut and suspended material room to exit the deck without getting recut.

• Reducing the amount of recutting enables more power to be used to cut incoming grass, which greatly improves mower capacity.
  • Helps maintain excellent cut quality at faster mowing speeds.
• Clean flow of material out of discharge area prevents cut material from interfering with cutting the incoming grass, making it possible for the blades to cut incoming material cleanly.
• Even in mulching mode, cut evenness is improved compared to other designs because the additional depth allows for continuous circulation, optimal recutting, and an even distribution of clippings.

Large discharge opening is both high and wide to handle more material.

• Gives a smooth, even discharge of clippings at all mowing speeds.
• Reduces the chance of plugging, especially important when operating in wet, thick, or dense grass and when bagging.
• Cut-and-throw chute has a large, optimized inlet which aids in collecting material by using airflow from the large deck opening.

The flat-top shape of the deck stamping is optimal for keeping itself and the operator clean.

• There are few places to catch and hold material on top and underneath the deck.
  • Top of deck stays cleaner, reducing time and effort needed for cleaning and service.
  • Underside of deck is self-cleaning to maintain optimum performance without buildup of material to interfere with the flow of air and clippings.
  • Less need to clean and remove buildup of material from underside of deck.
• The depth of the Accel Deep™ Mower Deck minimizes the amount of material that escapes from the front of the deck.
  • Limited amount of material to drift onto the operator and mower deck.
  • Even flow of material discharged out the chute and less recutting results in larger pieces that are less likely to end up on the operator.
  • Mulching prevents the discharge of material completely and MulchControl™ makes mulching a practical solution for most mowing situations.

Cleaning a mower deck, both top and bottom, is one of the most frequent maintenance activities.

• The flat-top design reduces places for material to build up and makes material that does collect easy to remove.

The MulchControl™ system for the 42A Mower Deck is an optional field-installed attachment and makes mulching practical for many mowing situations because it not only does an excellent job of mulching, but it also allows the mower to be easily converted for times when it is more desirable to side-discharge or collect the lawn material. Advantages of mulching grass clippings include:

• A beautiful looking lawn.
• Grass clippings not blown onto the operator, driveways, or flower beds.
• Less fertilizer use.
• Elimination of the effort needed to dispose of clippings.

A wash port is provided to make cleaning the underside of the mower deck easy.

• Hose connector is included with the mower deck.

The 42A Mower Deck has strong spindle pockets to keep the blades aligned, even after years of tough service.

• Ribs in the deck shell add strength where it is needed.
• The 42A has a 16% heavier overall weight than the Edge™ Xtra 42-inch (107-cm) Mower Deck that it replaces.

Mower wheels are double-captured.

• Provides greater strength and durability for longer, trouble-free life.
• Single-bolt adjustment makes setting wheels to the correct height for the cutting height quick and easy.

Low-tension belt-drive design reduces the side load on the engine lower bearing and mower deck bearings for longer life.

Rolled outer edge of the deck provides extra strength and protection.

Dual-stage E-coat and powder paint coatings provide extra protection from rust.

The 42A Mower Deck is designed for maximum versatility, providing the greatest ease in changing from one mower discharge mode to another.

• With the optional MulchControl™ system installed (along with the special mulching blades), changing from side-discharge to mulching or vice versa is done with the simple flip of a lever.
• The cut-and-throw rear bagger can be used with MulchControl™ installed by removing the rear MulchControl™ baffle before installing the bagger chute. The baffle is held in place with two carriage bolts. To return to mulching, the chute needs to be removed and the baffle replaced.
• The MulchControl™ handle is located on top of the mower deck and used to open and close the discharge baffle.
  • The operator is required to get off the machine in order to engage or disengage mulch mode.
• Changing from mulching to side-discharge or vice versa takes only a few seconds.

MulchControl™ is well-suited to the following mowing situations:

• Usually mulch, but side-discharge when grass gets too long.
• Usually side-discharge, but would like to be able to close the chute to control clippings.
• Always mulch a main lawn, but often side-discharge secondary lawns.
• Bag clippings, but want to go farther before emptying bags.

While in the side-discharge mode, MulchControl™ still mulches about one-third of the material. Therefore, the side-discharge mode is essentially a partial-mulch mode. This can be an advantage when side-discharging or bagging, as it helps to reduce the amount of material being discharged. Other times, this could work as a disadvantage.

• When cutting strong southern grasses, such as Zoysia and Bermuda.
• When cutting in wet, high-growth conditions, such as those found in the Pacific Northwest United States.
• When optimum bagging and lawn cleanup is desired.

MulchControl™ is an innovative, simple design that is easy to use and maintain.

• The MulchControl™ attachment includes baffles to control the flow of material under the deck.
• When the MulchControl™ baffle is open, most of the material passes through the discharge opening.
• When the MulchControl™ baffle is closed, the material stays within the deck and gets chopped into mulch and deposited in the turf.

An optional 6.5-bushel (230-L) cut-and-throw rear bagger material collection system (MCS) is available for use with the 42-inch (107-cm) Accel Deep™ Mower Deck. It provides an efficient means of collecting grass clippings and leaves. The hopper design provides modern styling, great bagging performance, cleaner operation, and easy-to-empty bags.

• 6.5-bushel (230-L) capacity.
• Easy-to-attach lower chute.
• Air exhaust duct.
• Convenient spring latch.
• Airflow fill indicator.
• Quik-Tatch™ mounting.
• Sealed hopper top.
• Loose-knit bags available.

High-lift bagging blades are included with the chute. They provide optimum performance when bagging in difficult conditions, such as when the grass is moist, dense, or long.

• High-lift bagging blades also work well when side-discharging material.

Mulching blades are included with the MulchControl™ attachment. They can be used for mulching, side-discharging, and bagging in most conditions.

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Comfortable ride delivered by operator station with adjustable controls and seat position

The operator station is designed for operator comfort and convenience when operating all controls.

• Excellent visibility forward and to the trim side of the deck makes operation easy and comfortable for the operator.
• Controls are color-coded for easy identification.
• Translucent fuel tank displays fuel level.
• Twin-lever controls adjust, using cut-height pin/socket, for convenience and operator comfort.
• A shock absorber dampens motion control lever movement to give smooth operation.

The M and R Series mowers have a cut-and-sewn seat.

• 20-inch (51-cm) back height.
• Thick foam to soften bumps.
• Side-bolstering to stabilize the operator on uneven terrain.
• Embroidered John Deere logo and green accents.
• Standard armrests on R Series models (armrests are optional on M Series models).
• Two steel coil suspension springs under the seat absorb shocks when traveling over rougher areas to provide a smoother ride. The seat fore-aft position can also be changed without tools.

The cup holder is designed to hold common cup sizes securely.

A storage compartment provides a place for the operator to keep safety equipment, a cell phone, etc.

Large foot platform helps the operator remain comfortable and secure.

• Volcano grips give a secure grip.
• Raised footrests at the front of the platform provide a comfortable area for the operator’s feet.
• An attractive floor mat is standard on R Series models and optional on M Series models.

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Convenient machine service includes 3-year or 200-hour bumper-to-bumper warranty

A convenient service interval decal provides basic maintenance information. It provides a quick reference for keeping recommended service up to date.

John Deere riding lawn mowers are supported by owner information web pages that include links to:

• Safety and How-To Videos
• Operator’s Manuals
• Parts Catalog
• Maintenance Reminder Sheets
• Attachments
• Warranty Statements

To speed access to owner information web pages, a QR code is printed onto a PIN label located under the seat on the battery cover. Since each vehicle model has its own web page, the links are specific to the owner’s model. The QR code also includes the vehicle’s unique PIN which allows for additional customization of the owner information web page in the future.

The footrest area is hinged and easily raised for service to the mower deck.

• No tools are needed to lift the footrest.
• Easy to clean grass off the top of the mower.
• Provides convenient access to the mower drive.

The engine is easy to service, including changing the oil and oil filter and servicing the air filter.

Accel Deep™ Mower Decks have several features that make them easy to service.

• Flat-top design minimizes places for debris to collect.
• Spring-loaded, flip-up belt guards make removing debris easy.
• Provision is provided for a standard, 3/8-inch (9.5-mm) ratchet wrench to be used for releasing belt tension when removing the drive belt.

Tie-down locations are provided for convenience and safety when trailering the machine.

Limited bumper-to-bumper warranty for new turf and utility equipment (U.S. and Canada only) is standard.

• 36 months or 200 hours, whichever comes first.

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Easy to find and use instruments and controls

The motion control levers can be adjusted to three different height settings and eleven different fore-aft settings.

• Increased operator comfort.
• Adjustable for more precise control of the machine.

A standard shock absorber for the motion control levers makes maneuvering ZTrak™ Mowers easy and comfortable.

• Shock absorber modulates the movement of control levers for smoother operation.
• Operator can smoothly and precisely control the machine.

On-board tracking adjustment from the operator seat is quick and easy. The included 13-mm wrench is used for adjusting tracking and the motion control lever position.

The operator control panel is conveniently located and easy to use. The following instruments and controls are included:

• Hour Meter
• Ignition Switch
• Power Take-Off (PTO) Control
• Engine Speed/Choke Control
  • A choke position is built into the engine speed control (E Series models).
  • A separate choke lever is used (M and R Series models).

The integrated park brake is automatically applied when steering levers are stowed outward and disengaged when motion control levers are placed into operating position.

Easily lift the mower deck using the foot lift pedal.

• A cut height preset ensures the deck returns to the correct position.
• Mower deck cutting height adjusts from 1.25 to 4.5 inches (3 to 11 cm) in 0.25-inch (0.64-cm) increments for excellent cut quality and performance.
• The foot lift pedal also provides a convenient way to temporarily raise the mower deck over an obstruction while mowing.

A heavy-duty electric PTO clutch is controlled by a convenient, dash-mounted control. The PTO clutch is designed to operate through many on/off cycles.

Motion control levers are designed for comfortable and easy operation.

• A shock absorber is included to dampen the movement of the control levers so any operator can make smooth, controlled turns.

Pneumatic caster wheels give a smoother ride and easier steering.

• Large 11×6-5 front caster wheels provide extra ride comfort and better steering control.
• Caster wheels have sealed bearings for long life and easy steering.

Seat interlock switch disengages the mower when the operator leaves  the seat.

• Engine will stall if the operator leaves the seat without the motion control levers in the outward position and the park brake set.

Controls are designed to promote safe operation.

• Motion control levers must be in the outward position for the engine to crank.

LED lighting provides additional lighting when needed.

• Forward LEDs light the front of the vehicle, mid LEDs illuminate the front and side of the mower deck.
• Standard on R Series models, optional on E and M Series models.
• E and M Series models include wiring to speed installation.

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Great appearance, reliability, and performance delivered by a heavy-duty design

ZTrak™ Mowers are designed around a heavy-duty formed and welded steel frame for strength and reliability. Large front caster wheels and large rear drive wheels provide several operator benefits.

• Smoother ride.
• Better slope performance.
• More operator comfort over uneven ground.
• Better traction.

The operator platform is roomy and uncluttered for maximum comfort, and the controls are convenient to use.

• Easy to get on and off the mower.
• Ample legroom for comfortable operation.
• Adjustable motion control levers for height and position, enabling the operator to stay comfortable while using them.
• Color-coded and logically placed controls.

The styling of ZTrak™ Mowers is functional and attractive to appeal to residential owners who value product appearance and the easy, comfortable operation that comes with thoughtful control designs.

• Color-coded controls are not only attractive, but easy to find and use.
• Large foot platform, surrounded by frame rails, has a safe and inviting appearance and provides easy access for the operator.
• Contoured shape of the fenders provides improved visibility to the drive tires, minimizes storage space required, and adds to the stylish appearance of the vehicle.

The ZTrak™ Mower frame is constructed of heavy-duty steel tubing for long-term durability.

• 2.5-inch x 2-inch (6-cm x 5-cm) steel tubing in front.
• 1.5-inch x 2-inch (4-cm x 5-cm) steel tubing on sides.

A front bumper protects the front of the mower from damage.

• Standard on M and R Series models, optional on E Series models.

A rear hitch provides towing capability.

• Pulls a trailer up to 250 pounds (113 kg) of weight.
• Bolts to tubular frame for solid support.
• Standard on M and R Series models, optional on E Series models.

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Efficiency and durability from dual transmissions with large, 1-inch (2.5-cm) diameter axles

Dual transmissions efficiently power the ZTrak™ Mower forward and reverse and give steering capability.

• Transmissions are set low in the vehicle for excellent hillside stability.
• Hydro-Gear® transmissions are reliable and durable.
  • Beefed-up 1-inch (2.5-cm) axles for greater strength.
• Maintenance-free unitized transmissions are sealed and have no hose connections to leak hydraulic fluid.

Four-bolt hubs provide a reliable and convenient wheel-mounting system.

Tow-valve controls are provided for each transmission and located above the vehicle frame on either side of the engine.

• Easy to reach and use.
• Allow the vehicle to be moved without the engine running.

Hydro-Gear is a trademark of Hydro-Gear Limited Partnership AF Holding Company, a Delaware Corporation and Danfoss Power Solutions (US) Company, a Delaware Corporation.

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Easy refueling with a conveniently located fuel tank

The fuel tank holds 3 U.S. gallons (11 L) of fuel.  It is located low on the left side of the machine.

• Fuel-fill opening is located low and angled for easy refueling.
• Large, 2-inch (5.1-cm) fuel fill opening reduces the chance of spilling when adding fuel.
• Cap is tethered to the fuel tank to prevent the fuel cap from getting misplaced.

Translucent fuel tank displays fuel level.

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Help maintain your mower and lawn with the MowerPlus™ app and connector

Keep a mower running its best and know how it mows with the John Deere MowerPlus™ app. Simply scan the mower’s barcode to get custom information about the mower.

• Engine hours, fuel level, and battery health (as compatible).
• Mowing history with time, distance, area, and speed.
• Current day and five-day weather forecast based on location.
• Walk-through setup guides.
• Expert mowing tips.
• Useful attachments for future purchase.
• Periodic maintenance reminders.
• Safety instructions.

To download the free MowerPlus™ app, visit the Apple® App Store® or Google Play™ store.

Three MowerPlus™ connectors are available to transmit vehicle information to the MowerPlus™ app.

• BUC10510 MowerPlus™ Hour Meter Connector is for use with:
  • Model year 2003 to 2020 100 Series Tractors, including all models with an E, D, LA, or L prefix.
  • Model year 2015 to 2020 S240 Tractors (serial number -880,000).
  • S100, S110, S140, and S220 Tractors.
• BUC10929 MowerPlus™ Deluxe Smart Connector is for use with:
  • All S120, S130, S160, S170, and S180 Tractors.
  • Model year 2021 and newer S240 Tractors (serial number 880,001-).
  • Model year 2021 and newer Z515E, Z530M, Z530R, and Z545R zero-turn mowers (serial number 010,001-).
• BUC10537 MowerPlus™ Smart Connector is for use with:
  • Model year 2016 and newer X300 and X500 Select Series Tractors.

All the MowerPlus™ connectors transmit engine hour information to the app, making it easy to track maintenance intervals. The MowerPlus™ Smart Connector and MowerPlus™ Deluxe Smart Connector also transmit the fuel level.

MowerPlus™ connectors require the MowerPlus™ app on a mobile device to use. The John Deere MowerPlus™ app and operating system requirements can be found in the mobile device’s app store. The MowerPlus™ app is only available in the English language, and it is not available in all countries. BUC10510 MowerPlus™ Hour Meter Connector requires iOS® version 10 or higher and is not compatible with Android™ operating systems.

Apple and App Store are trademarks of Apple, Inc. Google Play and Android are trademarks of Google, LLC. iOS is a trademark of Cisco Technology, Inc. used under license by Apple, Inc.