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Toro » Commercial/Contractor Mowers
Commercial Zero-Turn, Stand-On, Sub-Compact Zero-Turn, Mid-Size Walk-Behind, 21" Commercial Mowers


Home » Sales » Toro Full Line » Commercial/Contractor Mowers » Zero-Turn Riders » Z Master Z Series (12)

Z Master Z400/Z500 Series
Z Master mowers are designed to handle the demanding conditions of the landscape professional, and to deliver an immaculate after-cut appearance that can't be beat.

Z Master Z Series models:

  • Z400 - 21 hp* Kawasaki® / 48" 7-gauge (74448)
  • Z400 - 21 hp* Kawasaki / 52" 7-gauge (74448)
  • Z500 - 27 HP* Kohler® / 52" 7-gauge (74291)
  • Z500 - 27 HP* Kohler / 60" 7-gauge (74292)
  • Z450 - 23 HP* Kawasaki / 48" TURBO FORCE (74417)
  • Z450 - 23 HP* Kawasaki / 52" TURBO FORCE (74416)
  • Z550 - 27 HP* Kohler / 52" TURBO FORCE (74482)
  • Z550 - 27 HP* Kohler / 60" TURBO FORCE (74283)
  • Z550 - 27 HP* Kohler / 72" TURBO FORCE (74284)
  • Z550 - 28 HP* Kawasaki / 52" TURBO FORCE (74271)
  • Z550 - 28 HP* Kawasaki / 60" TURBO FORCE (74272)
  • Z550 - 28 HP* Kawasaki / 72" TURBO FORCE (74273)



Model/# Horsepower Brand Deck (Inches) Style
Z400 (74448) 21 Kawasaki® 48 7-guage
Z400 (74448) 21 Kawasaki® 52 7-guage
Z500 (74291) 27 Kohler 52 7-guage
Z500 (74292) 23 Kohler 60 7-guage
Z450 (74417) 23 Kawasaki® 52 TURBO FORCE
Z450 (74416) 27 Kawasaki® 52 TURBO FORCE
Z550 (74482) 27 Kohler 60 TURBO FORCE
Z550(74283) 27 Kohler 72 TURBO FORCE
Z550 (74271) 28 Kawasaki® 52 TURBO FORCE
Z550 (74272) 28 Kawasaki® 60 TURBO FORCE
Z550 (74273) 28 Kawasaki® 72 TURBO FORCE

Product Details Z400 series - 21 hp Kawasaki® OHV V-Twin engine with 48" 7-gauge deck.

(All specifications are for Z Master Z550 (74273). Specs for each model of the Z400/Z500 series may vary. For specific product details, features, accessories, or specifications of the Z Master Series, contact us)


Heavy Duty Air Cleaner
Deluxe 2-stage air cleaner protects engine from contaminants and prolongs product life.

Patented Adjustable Baffle
Allows operator to achieve maximum cutting performance by fine-tuning deck to conquer changing conditions, unique job sites or different times of the season. In extreme conditions, the baffle can be opened in order to conserve power and achieve faster mowing speeds. In less demanding conditions, the baffle can be closed to yield micro-sized particles and maximize discharge velocity.

A flat, crisp cut with precision blades.
1/4" thick precision blades resist flexing to provide a flat, crisp cut. High-strength, heat-treated alloy steel survives impacts and provides resistance to the rapid wear commonly associated with abrasive conditions.

Smarter design in a bull-nose bumper.
7-gauge bull-nose bumper not only protects against frontal impacts, but also contains an integral underskirt to minimize blowout of debris and dust. The bottom, leading edge of the deck is raised 1/4", allowing grass to stand more upright when entering the cutting chamber, ensuring a level cut. Leaf "plowing" during spring and fall clean-up also is significantly reduced.

Convenience and Comfort
Operator controls are conveniently grouped in a single location. Large 1-5/8" diameter steering levers increase comfort and reduce fatigue. Handy storage compartment provides location for cell phone, tools, and more. Built-in cup holder provided.

7-gauge, high-strength steel
Constructed of high-strength 7-gauge steel (50,000 psi minimum yield strength), the deck shell is extremely resistant to impacts and abrasion. At a full 5-1/2" deep, the TURBO FORCE deck has more than enough capacity to handle the most demanding conditions.

High-performance Discharge Chute
High performance 5/16" rubber discharge chute allows for close trimming without damaging chute or landscape structures. Patented design provides exceptional clipping dispersion.

Folding Rollover Protection System ROPS
A Rollover Protection System (ROPS), complete with seat belt, comes standard for operator protection in the case of accidental rollovers and tipovers. In situations where sufficient vertical clearance is not available, such as loading on an enclosed trailer, the ROPS can be temporarily unlocked and folded down.

The industry's toughest spindle assembly
Rigorously tested to ensure it can survive impacts that would destroy lesser spindles. The cast iron housing, with a massive 9-3/8" diameter base, absorbs impact loads and distributes them across a broader area of the robust deck shell. Tapered roller bearings last up to six times longer than ball bearings.

Exclusive TURBO FORCE® Deck
High-capacity TURBO FORCE decks deliver unsurpassed strength, a superior cut, and increased productivity in extreme mowing conditions. Equipped with a patented adjustable baffle, TURBO FORCE decks can be fine-tuned in order to conquer changing turf conditions.

Comprehensive Warranty
Model Year 2008 and Prior: 1 year limited, 2 year engine, hydrostatic and deck shell and 3 year spindle assembly. (Third year parts only).

(All specifications are for Z Master Z550 (74273). Specs for each model of the Z400/Z500 series may vary. For specific product details, features, accessories, or specifications of the Z Master Series, contact us)


Operator-Controlled Discharge Chute-OCD
Landscape friendly rubber discharge chute provides complete control of clippings. with three discharge settings, from wide open to blocked, the ODCD will put the clippings where you want them and not in beds, streets, etc. The integral design allows the discharge chute to remain in place and on the machine, reducing the risk of personal injury and property damage.

Utility Bags
Toro® utility bags for riding mowers are ideal for holding trash, tools, keys, and cell phones. They keep landscaping pros on the go and productive by transporting the essentials they need to get the job done. The lightweight yet durable bags are constructed of heavy-duty mesh fabric to keep contents secure, visible and within reach. They're available in over-the-seat and arm-rest styles and in sizes that match varying machines and mowing needs.

Toro® Z Stand®
Exclusive Toro Z Stand provides an on-board tool to simply elevate the front end of the machine and provide access to the underside of the deck.

Third-party Attachments
Toro has reviewed and endorsed the following third-party attachments: snowthrowers, blowers, rotary brooms, and plow blades by RAD Technologies, Quebec, Canada; soft cab by Original Tractor Cab Co., Arlington, Indiana.

E-Z Vac Soft Bag Collection Systems
Z Master® E-Z Vac™ twin and triple baggers deliver excellent collection performance, convenience and versatility. Commercial-grade, reinforced mesh bags (twin style for 52" deck; triple style for 60" deck) include convenient dump handles. No-tools, quick-release design allows for easy removal of the collection system, making it a snap to alternate between bagging and side discharge.

Optional Blades
In addition to the high sail blade, which comes standard on Z Master® Z500 Series mowers, additional 1/4" blades are available to match regional and seasonal mowing conditions. Options include Recycler® and Atomic® mulching blades, medium sail Bahia blades, and low sail sand blades.

Cool Tops™ Downdraft System
Available exclusively from Toro, the Cool Tops downdraft system is a patented, 12-volt fan that can be mounted to Toro® Z Master® riding mowers equipped with a roll-over protection system (ROPS) - whether old or new. It's designed to promote comfort and productivity by keeping motor heat, insects, and debris off equipment operators. The Cool Tops heavy-duty, S Blade Trimline fan utilizes the power system of a mower's traction unit to deliver an output of 1800 cubic feet per minute (cfm) air flow. The fan's sturdy construction measures 25 inches long by 20.5 inches wide and includes a steel frame, plus a waterproof motor and switch.

Deluxe Rider Cover
Toro's zero turn rider cover helps operators protect their mower - and their investment in it - by shielding the machine from the elements. The all-black cover is made from a 600 Denier polyester fabric that's waterproof as well as abrasion- and tear-resistant. Perfect as an overnight cover for mowers stored outside, it's also ideal for offering longer-term protection during winter storage. The vented design helps promote air movement around the mower to prevent build-up of harmful heat or moisture. The rider cover fits most styles of Z mowers.

E-Z Vac DFS Collection System
Quiet and powerful, the Toro E-Z Vac DFS collection system is spindle-driven and offers quick conversion between bagging and side discharge without tools.The horizontal blower impeller is positioned parallel to, and above the mower deck creating continuous airflow from deck to collection system. The Dump-From-the-Seat (DFS) features allows you to dump debris in only seconds - without ever having to leave your seat!

ZRT Hitch Kit
ZRT hitch kit improves versatility and allows for simple tow-behind applications.

Recycler® Mulching Kits
52" and 60" Recycler mulching kits deliver the industry's finest mulching performance and reduce mowing time up to 38% vs. bagging.

Deluxe Suspension Seat
Deluxe suspension seat improves operator comfort and reduces operator fatique when mowing for prolonged periods of time.

Striping Kits
52" and 60" striping kits are easily installed and provide a premium "ball park" after-cut appearance.

Z Master Z400/Z500

(All specifications* are for Z Master Z550 (74273). Specs for each model of the Z400/Z500 series may vary. For specific product details, features, accessories, or specifications of the Z Master Series, contact us)

Engine 28hp* Kawasaki® KAI V-Twin Kawasaki Details


  • Kawasaki applied manufacturer and user feedback to develop this flagship engine line, which delivers unprecedented power and performance.

  • Overhead v-valve
  • 90-degree V-twin
  • Pressurized lubrication
  • Electronic spark ignition
  • Automatic compression release
  • Dual element air cleaner
  • Multi-position air cleaner cover
  • Twin barrel, internally vented carburetor with fuel shut-off solenoid
  • Rotating grass screen
  • Cast iron cylinder liners
  • Oil Cooler
Air Filter Dual Stage Canister
Cutting Deck 7-gauge 72" TURBO FORCE®
Spindle Housings Cast Iron with 9-3/8" base
Spindle Bearings Tapered roller bearings
Blades 1/4" thick heat-treated steel
Blade Tip Speed 18,500 + ft/min
Height of Cut 1-1/2" - 5" in 1/4" increments
Discharge Chute High-performance rubber
Carrier Frame 2" x 2" x 3/16" tubular steel
Ground Speed 10 mph forward
6.3 mph rev
Hydraulic Pumps Hydro-Gear
12 cc/rev w/shock valves
Hydraulic Wheel Motors Parker 14.5 cir,
1-1/4" tapered shaft
Hydraulic Fluid Premium synthetic
Drive Tires 23" x 9.50-12"
Caster Tires 13" x 6.50-6"
Steering Controls 1-5/8" dia. levers; adjustable
Fuel Capacity Gasoline - 12 gallons
ROPS Folding; standard