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Toro Reelmaster 4000?D - User Manual

Toro Reelmaster 4000?D
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PART NO. 98958SL (Rev. C)
Service Manual
Reelmaster
4000−D
Preface
The purpose of this publication is to provide the service
technician with information for troubleshooting, testing,
and repair of major systems and components on the
Reelmaster 4000−D.
REFER TO THE TRACTION UNIT AND CUTTING
UNIT OPERATOR’S MANUALS FOR OPERATING,
MAINTENANCE AND ADJUSTMENT INSTRUC-
TIONS. Space is provided in Chapter 2 of this book to
insert the Operator’s Manuals and Parts Catalogs for
your machine. Replacement Operator’s Manuals are
available by sending complete Model and Serial Num-
ber to:
The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420−1196
The Toro Company reserves the right to change product
specifications or this publication without notice.
This safety symbol means DANGER, WARNING,
or CAUTION, PERSONAL SAFETY INSTRUC-
TION. When you see this symbol, carefully read
the instructions that follow. Failure to obey the
instructions may result in personal injury.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing, or re-
pair of the machine.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
The Toro Company − 1998, 2003, 2005, 2007

Table of Contents

Questions and Answers

  • V
    vwhiteheadJul 31, 2025
    Why are the cutting units on my Toro Lawn Mower lifting slowly?
    • L
      Lauren RiceJul 31, 2025
      If your Toro Lawn Mower's cutting units lift slowly or not at all, several factors could be responsible. Start by ensuring the engine RPM is sufficiently high and that the hydraulic oil level is adequate. Inspect the lift arm pivot points and bushings for any binding issues. Also, check for worn or damaged bushings and cylinders. Other potential causes include improper counterbalance pressure, a faulty counterbalance valve, low lift relief pressure, a plugged cylinder orifice, a damaged lift valve, or a worn steering/lift pump. Address each of these potential issues to restore proper lifting function.
  • C
    Christina DiazAug 5, 2025
    What to do if the reels on my Toro Reelmaster 4000?D are slow or won’t turn?
    • D
      Daniel TaylorAug 5, 2025
      If your Toro Lawn Mower's reels are slow or not turning, there are several potential causes. First, ensure that the engine RPM is sufficiently high and that the hydraulic oil level is correct. Check the reel to bedknife adjustment to ensure it's not too tight. Verify the reel drive motor belt has the correct tension, and inspect the reel shut-off valves. Low reel system pressure, a worn priority flow divider, low flow to reel motors, or an inefficient reel motor could also be the cause. Adjust or repair components as necessary.
  • K
    Kaitlyn HallAug 10, 2025
    Why won’t the cutting units drop or follow ground contours on my Toro Reelmaster 4000?D?
    • J
      Joe AndrewsAug 10, 2025
      If the cutting units on your Toro Lawn Mower won’t drop or follow the ground contours, several issues could be at play. Begin by checking that the engine RPM is sufficiently high and that the hydraulic oil level is correct. Inspect the lift arm pivot points and bushings for any binding. Also, look for worn or damaged bushings and cylinders. Other potential causes include improper counterbalance pressure, a worn or damaged counterbalance valve, a plugged cylinder orifice, a worn or damaged spool detent in the lift valve, or a worn or damaged lift valve. Repair or replace any faulty components.
  • A
    Aaron BrooksAug 16, 2025
    Why am I experiencing steering loss on my Toro Reelmaster 4000?D?
    • I
      ibrownAug 16, 2025
      If you experience steering loss with your Toro Lawn Mower, several factors could be the cause. If it occurs after washing, allow approximately 15 minutes for temperatures to stabilize. Inspect and correct the cylinder action. Other potential causes include low steering relief pressure, or a worn or damaged steering cylinder, steering pump, or steering control unit. Repair or replace any worn or damaged components.
  • A
    Andrea BarrAug 20, 2025
    How to troubleshoot slow or no traction in my Toro Reelmaster 4000?D?
    • D
      Don ClarkAug 21, 2025
      If your Toro Lawn Mower is experiencing slow or no traction, there are several possible causes. Start by increasing the engine RPM. Check and fill the hydraulic oil to the proper level. Inspect and repair or replace the traction pump bypass valve if it’s open or damaged. Re-engage or repair the final drive if it’s disengaged or damaged. Tighten or replace the loose or damaged traction linkage. Check and rectify the charge pressure. Check and adjust the traction pressure. Finally, repair or replace the damaged or worn traction motors.
  • D
    Debra ShermanAug 26, 2025
    What to do if I see hydraulic oil leaks in my Toro Reelmaster 4000?D Lawn Mower?
    • J
      Joseph SmithAug 26, 2025
      If you observe hydraulic oil leaks in your Toro Lawn Mower, it could be due to a loose or damaged fitting, hose, or tube. Correct the loose or damaged components. Alternatively, a missing or damaged o-ring could be the cause; in this case, replace the o-ring.

Summary

Preface

Chapter 1 - Safety

General Safety Instructions

Detailed instructions for safe operation and maintenance of the Reelmaster 4000-D.

Safety and Instruction Decals

Information on the location and importance of safety decals on the Reelmaster 4000-D.

Chapter 2 - Product Records and Maintenance

Product Records

Guidance on inserting operator's manuals and parts catalogs for the Reelmaster 4000-D.

Maintenance

Reference to operator's manual for maintenance procedures and service intervals.

Chapter 3 - Kubota Diesel Engine

Introduction

Overview of specifications, maintenance, troubleshooting, and repair of the diesel engine.

Specifications

Key technical specifications for the Kubota diesel engine used in the Reelmaster 4000-D.

Chapter 4 - Hydraulic System

Specifications

Technical specifications for the hydraulic system components and fluids.

General Information

Information on hydraulic hoses, fitting installation, and checking fluid levels.

Chapter 5 - Electrical System

ELECTRICAL SCHEMATICS AND DIAGRAMS

Diagrams and schematics for the Reelmaster 4000-D electrical system.

SPECIAL TOOLS

Recommended special tools for electrical system testing and maintenance.

Chapter 6 - Axles and Brakes

SPECIFICATIONS

Specifications for front/rear tire pressure, wheel nut torque, and toe-in.

ADJUSTMENTS

Procedures for adjusting the hand brake and traction switches for proper operation.

Chapter 7 - Cutting Units

SPECIFICATIONS

Specifications for cutting unit construction, reel configuration, and height-of-cut.

SPECIAL TOOLS

Specific tools required for cutting unit adjustments and maintenance.

Toro Reelmaster 4000?D Specifications

General IconGeneral
TransmissionHydrostatic
Number of Reels5
Deck TypeReel
Engine TypeDiesel
Weight3, 370 lbs
Drive Type4-wheel drive
Fuel Tank Capacity12 gallons
EngineKubota® Diesel

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