Toro Z Master 74958 User Manual

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FormNo.3400-708RevB

ZMaster

®

Commercial3000

SeriesRidingMower

with60inTURBOFORCE

®

SideDischarge

Mower

ModelNo.74958—SerialNo.316000001andUp

Registeratwww.Toro.com.

OriginalInstructions(EN)

*3400-708*B

Table of Contents

Questions and Answers:

B
Barry ThompsonAug 19, 2025
Why is the malfunction indicator light on in my Toro Lawn Mower?
- C
  Christopher WilsonAug 19, 2025
  If the malfunction indicator light (MIL) comes on in your Toro Lawn Mower, there could be several reasons. First, the engine might be too hot, so turn it off and let it cool. It could also be due to old gas in the tank, so replace it with new gas. Make sure the fuel-shutoff valve is completely open. Check if the air cleaner is dirty and clean or replace it. Ensure the battery is charged or replace it if necessary. Also, verify that a good 12-volt battery is being used and is fully charged. Finally, check and replace any blown fuses.
W
wileycrystalAug 22, 2025
Why won't the starter crank on my Toro Z Master 74958 Lawn Mower?
- J
  Julie Smith DDSAug 22, 2025
  If the starter does not crank on your Toro Lawn Mower, make sure that the blade-control switch (PTO) is in the disengaged position. Set the parking brake and ensure that the motion-control levers are in the NEUTRAL-LOCK position. Sit on the seat. Charge the battery if it is dead. Check the electrical connections for good contact and replace the fuse if it is blown.
P
pricemichaelAug 25, 2025
How to troubleshoot power loss in my Toro Z Master 74958 Lawn Mower engine?
- R
  Ricardo EstradaAug 26, 2025
  If your Toro Lawn Mower engine loses power, it could be due to several reasons. Try reducing the ground speed. Clean the air-cleaner element. Add oil to the crankcase if the oil level is low. Remove any obstructions from the cooling fins and the air passages. Clean or replace the fuel cap if the vent hole is plugged. Replace the fuel filter if it's dirty.
D
Dana HallAug 27, 2025
Why is my Toro Z Master 74958 engine overheating?
- C
  Caleb MurphyAug 28, 2025
  If your Toro Lawn Mower engine overheats, it could be due to excessive engine load, so reduce the ground speed. Ensure the oil level in the crankcase is adequate by adding oil if it is low. Also, check for and remove any obstructions from the cooling fins and air passages.
C
Casey JohnsonAug 30, 2025
What to do if my Toro Z Master 74958 won't drive?
- S
  smerrittAug 30, 2025
  If your Toro Lawn Mower machine does not drive, ensure the bypass valves are tightened. If not, tighten the bypass valves. If the pump belt is worn, loose, or broken, or off a pulley, change the belt. If the idler spring is broken or missing, replace the spring. If the hydraulic oil level is low or too hot, add hydraulic oil to reservoirs or let it cool down.
R
Rhonda GardnerSep 2, 2025
Why does my Toro Z Master 74958 cut unevenly?
- J
  jessica15Sep 2, 2025
  If your Toro Lawn Mower produces an uneven cutting height, try the following: Sharpen the blades if they are not sharp or install new cutting blades if the existing ones are bent. Level the mower deck from side-to-side and front-to-rear. Clean the underside of the mower. Adjust the tire pressure.
N
Nicole KeySep 4, 2025
Why does my Toro Z Master 74958 Lawn Mower pull to one side?
- L
  Lisa CrawfordSep 5, 2025
  If your Toro Lawn Mower pulls to the left or right even with the levers fully forward, you may need to adjust the tracking. Also, ensure the tire pressure is correct in the drive tires and adjust if necessary.
R
Raymond GarciaSep 7, 2025
Why aren't the blades rotating on my Toro Z Master 74958 Lawn Mower?
- D
  Darren RobertsonSep 7, 2025
  If the blades on your Toro Lawn Mower do not rotate, it could be due to several reasons. Check the mower deck belt, and if it is worn, loose, or broken, install a new deck belt. If the mower deck belt is off the pulley, install it back onto the mower deck pulley and check the idler pulley, idler arm, and spring for correct position and function. If the pump drive belt is worn, loose, or broken, check the belt tension or install a new belt. Finally, if the idler spring is broken or missing, replace the spring.

Toro Z Master 74958 Specifications

General

Brand	Toro
Model	Z Master 74958
Category	Lawn Mower
Language	English

Summary

Introduction

Safety and Intended Use

Covers safety warnings, product description, and intended use of the riding mower.

Safety

Safe Operating Practices

General instructions and safety recommendations adapted from ANSI standard B71.4-2012.

Operation

Safe Fuel Handling

Critical safety procedures and precautions for handling gasoline.

Rollover Protection System (ROPS)

ROPS Safety and Usage

Instructions for operating the machine safely with the Rollover-Protection System (ROPS).

Slope Indicator

Slope Operation Guidance

Visual guide and instructions for safe operation on slopes.

Operation: Adding Fuel

Fueling Safety and Best Practices

Detailed instructions for safely adding fuel, including type and precautions.

Operating the Rollover-Protection System (ROPS)

ROPS Lowering and Raising Procedure

Step-by-step instructions for lowering and raising the ROPS for safe operation.

Parking Brake Operation

Setting and Releasing the Parking Brake

Procedures for engaging and disengaging the parking brake.

Mower Blade-Control Switch (PTO)

Engaging and Disengaging the PTO

Instructions on how to operate the switch to control the mower blades.

Starting the Engine

Engine Ignition Procedure

Step-by-step instructions for starting the mower engine safely.

Safety-Interlock System

Understanding and Testing Safety Interlocks

Explanation of the safety interlock system and daily testing procedures.

Driving Controls

Motion-Control Levers and Driving Forward/Backward

Adjusting the Height-of-Cut Pin

Setting Mower Deck Cutting Height

Transporting the Machine

Safe Machine Transport Procedures

Loading the Machine

Safe Loading Procedures

Maintenance Schedule

Recommended Service Intervals and Procedures

Chart outlining maintenance tasks based on service intervals (hours/time).

Engine Maintenance: Air Cleaner

Servicing the Air Cleaner Filters

Engine Oil Servicing

Checking the Engine-Oil Level

Changing the Engine Oil

Engine Oil Change Procedure

Step-by-step guide for draining and refilling engine oil.

Engine Oil Filter and Cooler Maintenance

Changing the Oil Filter and Servicing the Oil Cooler

Spark Plug Service

Spark Plug Removal and Service

Fuel System Maintenance

Servicing Fuel System Components

Covers EFI system, fuel filters, and fuel tank service.

Electrical System Maintenance: Battery

Servicing and Installing the Battery

Drive System Adjustments and Checks

Adjusting Tracking, Checking Tire Pressure, and Lug Nuts

Clutch Shim Adjustment

Clutch Engagement Shim Procedure

Hydraulic Units and Parking Brake

Cleaning Hydraulic Units and Adjusting Parking Brake

Belt Maintenance

Inspecting and Replacing Mower Belts

Hydraulic Pump Drive Belt and Control Handle Maintenance

Replacing Hydraulic Pump Belt and Adjusting Control Handles

Adjusting Motion-Control Linkage

Motion-Control Linkage Adjustment

Hydraulic System Maintenance

Servicing Hydraulic System and Checking Oil Level

Procedures for servicing the hydraulic system and checking the oil level.

Hydraulic System Maintenance: Filters and Oil

Replacing Hydraulic Filters and Oil

Steps for replacing hydraulic filters and changing hydraulic oil.

Mower Deck Maintenance

Leveling the Mower Deck

Adjusting Mower Deck Height

Mower Deck Height Adjustment Procedures

Servicing Cutting Blades

Inspecting and Checking Blades for Damage

Cutting Blade Procedures

Removing, Sharpening, and Installing Blades

Detailed steps for removing, sharpening, and installing mower blades.

Removing the Mower Deck

Mower Deck Removal Procedure

Storage

Cleaning and Preparing Machine for Storage

Troubleshooting

Common Problems and Corrective Actions

Guide to diagnosing and fixing common issues with the mower.

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