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4000 Series 52 in. (132 cm) 25.5 hp 852cc

4000 Series 52 in. (132 cm) 25.5 hp 852cc

4000 Series 52 in. (132 cm) 25.5 hp 852cc

Product Information

Model #: 74002
Serial #: 420000000 - 420899999
Product Type: Riding Products

Parts

Search for a part within assembly drawings:

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Drawing Title	Part Number	Description
Title

Caster and Wheel Assembly

Caster and Wheel Assembly

Caster Wheel Assembly

Caster Wheel Assembly

Decal Assembly

Deck Assembly

Deck Decal Assembly No. 163-4181SP

Deck Decal Assembly No. 163-4181SP

Deck Lift Assembly

Deck Lift Assembly

Deck Strut Assembly No. 161-6805

Deck Strut Assembly No. 161-6805

Deflector Assembly No. 144-2635

Deflector Assembly No. 144-2635

Electrical Assembly

Electrical Assembly

Engine, Clutch and Muffler Assembly

Engine, Clutch and Muffler Assembly

Frame and Roll-Over Protection System Assembly

Frame and Roll-Over Protection System Assembly

Fuel System Assembly

Fuel System Assembly

Fuel Tank Assembly No. 163-4138

Fuel Tank Assembly No. 163-4138

Hydraulic Drive Assembly

Hydraulic Drive Assembly

Idler Arm Assembly No. 139-1087

Idler Arm Assembly No. 139-1087

Left and Right Control Arm Assembly

Left and Right Control Arm Assembly

LH Transaxle Assembly No. 145-3696

LH Transaxle Assembly No. 145-3696

Motion Control Assembly

Motion Control Assembly

Rear Wheel Assembly

Rear Wheel Assembly

RH Transaxle Assembly No. 145-3695

RH Transaxle Assembly No. 145-3695

Roll-Over Protection System Assembly No. 139-8062

Roll-Over Protection System Assembly No. 139-8062

Seat Assembly No. 144-2632

Seat Assembly No. 144-2632

Seat Mount Assembly

Seat Mount Assembly

Spindle Assembly No. 137-9780

Spindle Assembly No. 137-9780

Throttle, Choke Cables and Guard Assembly

Throttle, Choke Cables and Guard Assembly

Wire Harness Assembly No. 147-2363

Wire Harness Assembly No. 147-2363

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Manuals

Operator's Manual

Parts Catalog

Setup Instructions

Product Warranty

Accessories (41)

Hypr-Oil™ 500 (quart)

Hypr-Oil™ 500 (quart) (Part # 114-4713)

Hypr-oil™ 500 (quart). Toro Hypr-Oil 500 is a high-performance hydraulic fluid specifically formulated and approved by Toro engineering for use in Toro commercial zero turn mowers. It provides excellent wear and corrosion protection for hydraulic systems, helping to maintain consistent performance and extend the service life of hydraulic components. Always refer to your operator manual for the correct fluid specification and service intervals.

Hypr-Oil™ 500 (gallon)

Hypr-Oil™ 500 (gallon) (Part # 114-4714)

Toro Hypr-Oil 500 is a high-performance hydraulic fluid specifically formulated and approved by Toro engineering for use in Toro commercial zero turn and stand-on mower hydraulic systems. Maintaining the correct hydraulic fluid and changing it at the manufacturer-recommended interval is critical to protecting hydraulic pumps, wheel motors, and other hydraulic components from wear and corrosion — particularly on machines operating under commercial duty cycles. Refer to your operator manual for the correct change interval and fluid capacity for your equipment.

Genuine OEM Part 114-4715

Hypr-Oil™ 500 Hydraulic Oil (5 gallon) (Part # 114-4715)

Toro Hypr-Oil 500 is a high-performance hydraulic fluid formulated and approved by Toro engineering for commercial zero turn and stand-on mower hydraulic systems. The 5-gallon commercial bulk pack is designed for fleet operators and service shops performing multiple machine hydraulic fluid changes. Maintaining the correct hydraulic fluid on schedule protects pumps, wheel motors, and other hydraulic components from accelerated wear. Refer to your operator manual for the correct change interval and capacity for each machine. Do not mix with other hydraulic fluids.

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KIT, JACK W/ADAPTER (Part # 126-7282)

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KIT, ADAPTER-JACK (Part # 126-7283)

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KIT-STRIPER 48, 52, 60, 72 (Part # 126-7882)

Riding Mower Jack Kit

Riding Mower Jack Kit (Part # 127-6666)

This genuine Toro OEM riding mower jack kit is designed to safely lift and support your Toro riding mower or zero turn, giving you safe, stable under-deck access for blade changes, belt replacements, and routine maintenance. It is one of the most practical purchase-stage accessories for any new mower owner — investing in a proper jack from day one avoids improvised lifting methods that risk injury and equipment damage. Verify your model and serial number before ordering.

Genuine OEM Part 139-3649

MICHELIN® X® TWEEL® Turf Airless Radial Tires (24") (Part # 139-3649)

A MICHELIN® X® TWEEL® airless radial tire is a single unit that replaces the current tire and wheel assembly. There is no need for complex mounting equipment and once they are bolted on, there is no air pressure to maintain The unique energy transfer within the poly-resin spokes helps reduce the “bounce” associated with pneumatic tires, while providing outstanding handling characteristics. The MICHELIN X TWEEL Turf airless radial tire is a single-unit assembly that replaces a conventional tire and wheel, eliminating the need for air pressure entirely — which means no flats, no downtime, and no patch kits. The wear life of a TWEEL tire is significantly longer than a comparable pneumatic tire, reducing the frequency of replacement and total cost of ownership over time. Verify your model and serial number to confirm the correct size before ordering.

Genuine OEM Part 139-6653

52 Inch Recycler Kit (Part # 139-6653)

Recycler Kit, when installed on compatible 42 in. deck Toro zero turn riding mowers, gives it the capability to mulch grass by cutting it multiple times turning it into fine clipping pieces. Verify your model and serial number to confirm compatibility before ordering.

Genuine OEM Part 140-1242

18 Inch Hi-Flow Blade (Part # 140-1242)

This Toro OEM 18-inch Hi-Flow replacement mower blade is designed to produce high lift, cutting grass cleanly and propelling clippings upward and out through the discharge chute. Hi-Flow blades — also referred to as basic, standard, or 2-in-1 blades — are the preferred choice when using a grass catcher or bagger, as the increased airflow drives clippings efficiently into the collection bag. This blade is compatible with multiple Toro riding lawn mowers models — always verify your model and serial number before ordering to confirm the correct fit.

Genuine OEM Part 140-4856

18 Inch Medium Flow Mower Blade (Part # 140-4856)

Toro 18 Inch OEM Medium Flow blade. Medium Flow mower straight edge, standard discharge blade. These blades have slight upward angle on the edges. Great blades for use when horsepower is a concern. Produce medium Flow but requires less horsepower than Hi-Flow blades. This Toro blade has multiple applications. Be sure to verify model and serial number to ensure the correct part.

Genuine OEM Part 140-4857

18 Inch Low Flow Mower Blade (Part # 140-4857)

This Toro OEM 18-inch Low Flow replacement mower blade features a slightly curved tip design that keeps airflow to a minimum during operation. Low Flow blades are the right choice for mowing in sandy, dusty, or dry conditions where high suction would stir up excessive debris — they also cause less strain on the engine than Hi-Flow blades, making them a practical option when horsepower is a consideration. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Genuine OEM Part 140-4858

18 Inch Atomic Blade (Part # 140-4858)

This Toro OEM 18-inch Atomic replacement blade — commonly known as a Gator-style blade — features a serrated cutting edge with raised teeth that shred grass clippings into much finer pieces than a standard mulching blade. The serrated design re-cuts clippings multiple times on every pass, delivering the highest mulching quality available and a consistently crisp, clean cut even in dense or damp grass. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Genuine OEM Part 140-4859

18 Inch Recycler Blade (Part # 140-4859)

This Toro OEM 18-inch Recycler replacement mower blade is built to work within Toro's Recycler mulching system, featuring uniquely shaped 'accelerator' wings that act as a fan to keep clippings circulating beneath the deck. As clippings are forced back into the cutting zone, they are re-cut multiple times into fine pieces that fall back into the lawn and break down into natural fertilizer — feeding the grass and reducing the need to bag or rake. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Genuine OEM Part 140-1242

Hi-Flow 18 Inch Blade Pack (6) (Part # 140-4882)

This Toro OEM 18-inch Hi-Flow replacement mower blade — sold as a pack of 6 is designed to produce high lift, cutting grass cleanly and propelling clippings upward and out through the discharge chute. Hi-Flow blades — also referred to as basic, standard, or 2-in-1 blades — are the preferred choice when using a grass catcher or bagger, as the increased airflow drives clippings efficiently into the collection bag. This blade is compatible with multiple Toro riding lawn mowers models — always verify your model and serial number before ordering to confirm the correct fit.

Genuine OEM Part 140-4856

Mid Flow 18 Inch Blade Pack (6) (Part # 140-4883)

This Toro OEM 18-inch Mid Flow replacement mower blade — sold as a pack of 6 is engineered to provide a balance between the high suction of Hi-Flow blades and the minimal airflow of Low Flow blades. Mid Flow blades have a slight upward angle on the cutting edges, producing moderate lift while requiring less horsepower than Hi-Flow blades — making them a versatile option for varied terrain and grass conditions. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Genuine OEM Part 140-4857

Low Flow 18 Inch Blade Pack (6) (Part # 140-4884)

This Toro OEM 18-inch Low Flow replacement mower blade — sold as a pack of 6 features a slightly curved tip design that keeps airflow to a minimum during operation. Low Flow blades are the right choice for mowing in sandy, dusty, or dry conditions where high suction would stir up excessive debris — they also cause less strain on the engine than Hi-Flow blades, making them a practical option when horsepower is a consideration. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Atomic 18 Inch Blade Pack (6)

Atomic 18 Inch Blade Pack (6) (Part # 140-4885)

This Toro OEM 18-inch Atomic replacement blade — commonly known as a Gator-style blade — features a serrated cutting edge with raised teeth that shred grass clippings into much finer pieces than a standard mulching blade. The serrated design re-cuts clippings multiple times on every pass, delivering the highest mulching quality available and a consistently crisp, clean cut even in dense or damp grass. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

Genuine OEM Part 140-4886

Recycler 18 Inch Blade Pack (6) (Part # 140-4886)

This Toro OEM 18-inch Recycler replacement mower blade — sold as a pack of 6 is built to work within Toro's Recycler mulching system, featuring uniquely shaped 'accelerator' wings that act as a fan to keep clippings circulating beneath the deck. As clippings are forced back into the cutting zone, they are re-cut multiple times into fine pieces that fall back into the lawn and break down into natural fertilizer — feeding the grass and reducing the need to bag or rake. Compatible with multiple Toro riding lawn mowers models — verify your model and serial number before ordering.

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SCREEN-SPARK ARRESTOR (Part # 142-7683)

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TRIMMER MOUNT [4000] (Part # 144-2665)

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JACK MOUNT KIT (Part # 144-2676)

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HARDTOP SUN CANOPY (ARTICULATING) (Part # 144-3719)

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52" CHUTE GATE KIT [4000] (Part # 144-6571)

Genuine OEM Part 145-3615

Handle Extension Kit (Part # 145-3615)

Genuine OEM Part

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KIT-SLOPE SENSOR [2000, 4000] (Part # 145-8442)

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ASM-VOODOO TRAC 24X10.5-12 [OS -2.25] (Part # 147-5030)

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BLADE-18.00 HIGH FLOW [.250] (Part # 147-6251)

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6 PACK-BLADE, 18.00 HIGH FLOW [.250] (Part # 147-6255)

MICHELIN® X® TWEEL® Turf Airless Caster Wheels (13") (Part # 147-6294)

The MICHELIN® X® TWEEL® Turf Caster Wheel is the next “revolution” in commercial mowing. The MICHELIN X TWEEL Turf Caster Wheel has all the qualities you would want in a pneumatic tire but it never needs air. No more flats, downtime, patch kits or replacement tires. And in the area of wear and tear, this “tire” has a wear life that is three times that of a pneumatic.

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KIT-BUCKET MOUNT (Part # 147-6345)

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KIT-UNIVERSAL MOUNT (Part # 147-6346)

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KIT-ELEC DECK LIFT [ZM2000,ZM4000] (Part # 147-7867)

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KIT-2IN RECIEVER HITCH (Part # 161-2810)

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KIT-ACTUATOR REPLACEMENT,412200557 BELOW (Part # 161-3549)

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KIT-ELEC DECK LIFT, SN 412200557 BELOW (Part # 161-3550)

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KIT-FUEL PICKUP W/SCREEN (Part # 161-6806)

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FRONT LIGHT KIT - 4000 SERIES (Part # 163-7395)

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REAR WEIGHT KIT [ZM2, ZM4] (Part # 163-7435)

BAGGER KIT, Z MASTER 2000 / 4000 (Part # 78439)

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4000 Series E-Z Vac Blower & Drive Kit for 52" Deck (Part # 78465)

4000 Series E-Z Vac Blower & Drive Kit for 52" Deck - use with 4000 Series Twin Soft Bagger 48 - 60" Deck (#78463)

Product Details

Model #

74002

Serial #

420000000 - 420899999

Product Name

4000 Series 52 in. (132 cm) 25.5 hp 852cc

Product Brand

Toro

Product Type

Riding Products

Product Series

Zero Radius Turn, Commercial 4000 Series

Chassis Type

ZRT - LCE

Swath

52 inch / 132 cm

Discharge

Side Discharge

Engine/Motor Manufacturer

Kawasaki

Engine/Motor Size

25.5 hp

Engine/Motor Type

4 Cycle

Engine Starter

Electric

Transmission Type

Hydrostatic

Traction Type

Rear WD

Specifications

Chassis: Tire Pressure

13 psi / 90 kPa

Engine: Engine Oil Type

filter chg 77 oz.(2.3 L); no filter chg 70 oz.(2.1 L); 10W-30 above -4F(-20C) or 5W-20 below 32F(0C)

Chassis: Height of Cut Range

1.5" - 5.5" (38-140mm)