Toro 74631 User Manual (English)

Questions and Answers:

A
Adam HillAug 13, 2025
What to do if my Toro 74631 Lawn Mower engine will not start?
- D
  Darryl OneillAug 13, 2025
  If your Toro Lawn Mower engine won't start, several factors could be at play. First, ensure the fuel tank isn't empty by filling it. Next, check that the choke is engaged by moving the choke lever to the 'On' position. Also, inspect the air filter; a dirty air filter should be cleaned or replaced. Make sure the spark plug wire is securely connected to the spark plug. Examine the spark plug itself for damage or incorrect gapping, replacing it if necessary. Check the fuel filter for dirt and replace if needed. Ensure you're using the correct type of fuel; if not, drain and replace it. Finally, verify the oil level in the crankcase and add oil if it's low.
C
Cameron BakerAug 17, 2025
Why does my Toro 74631 engine overheat?
- N
  Noah HuffmanAug 17, 2025
  Your Toro Lawn Mower engine could overheat due to several reasons. The engine load might be excessive, so try reducing your ground speed. Check the oil level in the crankcase and add oil if it's low. Make sure the cooling fins and air passages under the engine blower housing aren't blocked; remove any obstructions. Also, a dirty air cleaner can cause overheating, so clean or replace the air cleaner element.
A
Amanda WiseAug 21, 2025
Why does my Toro 74631 Lawn Mower engine lose power?
- A
  andreachangAug 21, 2025
  Your Toro Lawn Mower engine might be losing power due to several reasons. First, the engine load could be excessive, so reduce your ground speed. A dirty air cleaner can also cause power loss, so clean it. Check the oil level in the crankcase and add oil if it's low. Make sure the cooling fins and air passages under the engine blower housing are clear of obstructions. Inspect the spark plug for pitting, fouling, or incorrect gapping, and replace if necessary. Also, ensure you are using the correct fuel type; if not, drain the tank and replace with the proper fuel.
T
Tony MontoyaAug 25, 2025
How to fix uneven cutting height on my Toro 74631?
- W
  wangvalerieAug 26, 2025
  To address uneven cutting height on your Toro Lawn Mower, begin by sharpening the blades. If a cutting blade is bent, replace it. Ensure the mower is level from side-to-side and front-to-rear. Check the anti-scalp wheel settings and adjust as needed. Clean the underside of the mower deck. Finally, verify and adjust the tire pressure to the correct levels.
R
rcookAug 28, 2025
What causes my Toro 74631 Lawn Mower not to drive?
- C
  Cynthia WashingtonAug 28, 2025
  If your Toro Lawn Mower isn't driving, the bypass valves might be open; close the tow valves.
C
christineknappSep 1, 2025
What to do if my Toro Lawn Mower starter does not crank?
- J
  Jesse DavisSep 1, 2025
  If the starter on your Toro Lawn Mower doesn't crank, there are several things to check. Ensure that the blade control switch is disengaged. Verify that the motion control levers are in the park position. A dead battery could be the culprit, so charge it. Also, inspect the electrical connections for corrosion or looseness, ensuring they have good contact. Finally, check if a fuse is blown and replace it if necessary.
C
Carla VangSep 5, 2025
What causes abnormal vibration in my Toro Lawn Mower?
- D
  David WalkerSep 5, 2025
  Abnormal vibration in your Toro Lawn Mower can stem from several sources. Start by checking if the engine mounting bolts are loose and tighten them. Inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten the appropriate one. Also, examine the cutting blades for bending or imbalance, replacing them if necessary. Finally, ensure that the blade mounting bolt is securely tightened.
C
colemantylerSep 8, 2025
What to do if my Toro 74631 blades do not rotate?
- A
  Alexandra LarsonSep 8, 2025
  If the blades on your Toro Lawn Mower aren't rotating, first check if the drive belt is worn, loose, or broken and install a new one. Also, inspect whether the drive belt is off the pulley; if so, install the drive belt and check the adjusting shafts and belt guides for the correct position. Another possible reason is that the mower belt is worn, loose, or broken, then install a new mower belt.

Toro 74631 Specifications

General

Brand	Toro
Model	74631
Category	Lawn Mower
Language	English

Summary

Introduction to Toro TimeCutter Mower Operation

California Proposition 65 Warning for Mower Use

Warning about chemicals known to cause cancer, birth defects, or reproductive harm.

Important Mower Safety Information and Warnings

Covers California warnings, spark arrester requirements, and equipment modification risks.

Safety Guidelines for Mower Operation

General Safe Operating Practices for Lawn Mowers

Essential safety rules for operating the mower to prevent injury.

General Operation Safety Procedures

Guidelines for safe machine operation, including clearing the area and stopping.

Safe Operation on Slopes and Inclines

Precautions and guidelines for safely mowing on slopes.

Service and Maintenance Precautions

Safety Precautions for Children Around Mowers

Ensuring children's safety in the mowing area and preventing unsupervised access.

Towing Safety Guidelines for Mower Attachments

Safety advice when towing equipment with the mower.

Safe Gasoline Handling and Fuel Safety

Precautions for handling flammable gasoline and preventing fires or explosions.

Toro Riding Mower Specific Safety

Using the Slope Indicator Guide

Understanding Safety and Instructional Decals

Product Overview and Component Identification

Mower Controls and Operation Explained

Control Levers and System Operation

How to use motion control levers and the Smart Speed™ system for driving.

Ignition, Throttle, and Choke Control Functions

Operation of the ignition switch, throttle, and choke for engine control.

Blade Control and Fuel Indicators

How to engage/disengage blades and check fuel level.

Mower Operation Procedures and Safety

Prioritizing Safety During Mower Operation

Emphasizes reading all safety instructions before operating the mower.

Adjusting Cutting Height and Using the Hour Meter

How to adjust cutting height and the function of the hour meter.

Fuel System Safety and Interlock System Operation

Dangers and Warnings for Gasoline Handling

Critical safety information regarding gasoline flammability and health hazards.

Understanding the Mower's Safety Interlock System

Explanation of how safety interlock switches prevent operation.

Before Starting the Mower: Fuel and Oil Checks

Safe Procedures for Adding Fuel to the Mower

Instructions for safely filling the fuel tank with gasoline.

Using Fuel Stabilizer and Checking Engine Oil Level

Guidance on fuel stabilization and checking engine oil before operation.

Starting the Mower Engine

Blade Operation and Safety Interlock Test

How to Engage and Disengage Mower Blades

Procedure for operating the blade control switch.

Testing the Mower's Safety Interlock System

Ensuring the safety interlock system functions correctly before each use.

Driving and Speed Control

Understanding Zero-Turn Mower Driving Dynamics

Explanation of zero-turn radius operation and handling characteristics.

Operating with the Smart Speed™ Control System

How to select and use different ground speed ranges.

Mower Driving and Stopping Procedures

Forward and Backward Mower Movement

Instructions for controlling the mower's forward and backward motion.

Safely Stopping the Mower Machine

Steps to properly stop the engine and secure the machine.

Adjusting the Mower Deck's Cutting Height

How to adjust the height of cut lever to change cutting height.

Adjusting Mower Deck Anti-Scalp Rollers

Seat and Control Lever Adjustments

Adjusting the Operator's Seat Position

How to move and secure the operator's seat for comfort.

Adjusting Motion Control Levers for Height and Tilt

Adjusting lever height and tilt for operator comfort.

How to Manually Push the Mower

Procedure for engaging neutral and pushing the machine by hand.

Mower Deck Components and Operating Tips

Grass Deflector Safety and Proper Function

Importance and handling of the grass deflector for safety and performance.

Mowing Best Practices and Tips

Tips for optimal mowing, including throttle, speed, and cutting grass.

Mower Maintenance and Blade Care

Mowing Techniques and Underside Deck Cleaning

Advice on mowing direction, intervals, and cleaning the mower deck.

Cutting Blade Maintenance and Inspection

How to maintain sharp, balanced, and undamaged mower blades.

Recommended Maintenance Schedule for Mower

Pre-Maintenance Checks and Lubrication Guide

How to Raise the Seat for Maintenance Access

Steps to lift the seat to access internal components.

Greasing Mower Bearings and Lubrication Points

Procedure and interval for greasing all lubrication points on the mower.

Engine Maintenance Procedures

Servicing the Mower Air Cleaner Element

Instructions for cleaning or replacing the air cleaner element.

Servicing the Mower Engine Oil

Details on oil type, capacity, checking level, and oil change.

Changing the Mower Engine Oil and Filter

Spark Plug and Fuel Filter Maintenance

Servicing and Replacing the Mower Spark Plug

How to check, gap, and replace the spark plug.

Replacing the In-line Fuel Filter

Procedure for replacing the fuel filter in the fuel line.

Cooling System and Spark Plug Checks

Cleaning the Mower Cooling System

How to clean grass and debris from the cooling system.

Checking the Mower Spark Plug Condition

How to inspect the spark plug for wear, coating, or damage.

Fuel System Maintenance and Emissions Filter

Servicing the Emissions Filter on Model 74625

Instructions for servicing the emissions filter on specific models.

Electrical System Maintenance and Battery Care

Removing the Battery and Associated Safety Warnings

Steps for safely removing the battery and warnings about electrical hazards.

Charging the Mower Battery

Procedure for charging the mower battery correctly.

Battery Installation and Servicing the Fuses

Installing the Mower Battery Safely

Steps for correctly installing the battery.

Servicing the Mower's Electrical Fuses

How to check and replace fuses in the electrical system.

Drive System Maintenance Procedures

Checking and Maintaining Tire Pressure

Ensuring proper tire pressure for even cutting and performance.

Manually Releasing the Electric Brake

Procedure for releasing the electric brake manually.

Mower Blade Maintenance and Inspection

Servicing the Mower's Cutting Blades

Instructions for maintaining sharp, balanced, and undamaged cutting blades.

Checking Mower Blades for Bending or Damage

Procedure to inspect blades for bending, wear, or damage.

Removing and Replacing Mower Blades

Mower Deck Leveling Procedures

Sharpening and Installing Mower Blades

How to sharpen and properly install mower blades.

Side-to-Side Mower Deck Leveling

Procedure for adjusting the mower deck for side-to-side balance.

Mower Deck Leveling Adjustments

Adjusting Front-to-Rear Blade Slope

Procedure for Removing the Mower Deck

Mower Belt Inspection and Replacement

Inspecting Mower Belts for Wear and Damage

How to check mower belts for cracks, fraying, or other damage.

Replacing the Mower Belt

Steps for removing and installing the mower belt.

Installing the Mower Deck and Replacing Grass Deflector

Installing the Mower Deck onto the Machine

Procedure for attaching the mower deck to the tractor.

Replacing the Grass Deflector for Safety

How to replace a damaged grass deflector.

Cleaning the Underside of the Mower Deck

Machine Cleaning and Storage Preparation

Troubleshooting Common Mower Issues

Advanced Troubleshooting and Solutions

Mower Electrical System Schematics

Toro Total Coverage Limited Warranty Details

Warranty Coverage, Products, and Exclusions

Details on what is covered, excluded, and the warranty periods.

Instructions for Obtaining Toro Warranty Service

Procedure for arranging service and contacting Toro for warranty issues.

Related product manuals

Toro 74631 User Manual

Table of Contents

Questions and Answers:

Toro 74631 Specifications

Summary

Introduction to Toro TimeCutter Mower Operation

California Proposition 65 Warning for Mower Use

Important Mower Safety Information and Warnings

Safety Guidelines for Mower Operation

General Safe Operating Practices for Lawn Mowers

General Operation Safety Procedures

Safe Operation on Slopes and Inclines

Service and Maintenance Precautions

Safety Precautions for Children Around Mowers

Towing Safety Guidelines for Mower Attachments

Safe Gasoline Handling and Fuel Safety

Toro Riding Mower Specific Safety

Using the Slope Indicator Guide

Understanding Safety and Instructional Decals

Product Overview and Component Identification

Mower Controls and Operation Explained

Control Levers and System Operation

Ignition, Throttle, and Choke Control Functions

Blade Control and Fuel Indicators

Mower Operation Procedures and Safety

Prioritizing Safety During Mower Operation

Adjusting Cutting Height and Using the Hour Meter

Fuel System Safety and Interlock System Operation

Dangers and Warnings for Gasoline Handling

Understanding the Mower's Safety Interlock System

Before Starting the Mower: Fuel and Oil Checks

Safe Procedures for Adding Fuel to the Mower

Using Fuel Stabilizer and Checking Engine Oil Level

Starting the Mower Engine

Blade Operation and Safety Interlock Test

How to Engage and Disengage Mower Blades

Testing the Mower's Safety Interlock System

Driving and Speed Control

Understanding Zero-Turn Mower Driving Dynamics

Operating with the Smart Speed™ Control System

Mower Driving and Stopping Procedures

Forward and Backward Mower Movement

Safely Stopping the Mower Machine

Adjusting the Mower Deck's Cutting Height

Adjusting Mower Deck Anti-Scalp Rollers

Seat and Control Lever Adjustments

Adjusting the Operator's Seat Position

Adjusting Motion Control Levers for Height and Tilt

How to Manually Push the Mower

Mower Deck Components and Operating Tips

Grass Deflector Safety and Proper Function

Mowing Best Practices and Tips

Mower Maintenance and Blade Care

Mowing Techniques and Underside Deck Cleaning

Cutting Blade Maintenance and Inspection

Recommended Maintenance Schedule for Mower

Pre-Maintenance Checks and Lubrication Guide

How to Raise the Seat for Maintenance Access

Greasing Mower Bearings and Lubrication Points

Engine Maintenance Procedures

Servicing the Mower Air Cleaner Element

Servicing the Mower Engine Oil

Changing the Mower Engine Oil and Filter

Spark Plug and Fuel Filter Maintenance

Servicing and Replacing the Mower Spark Plug

Replacing the In-line Fuel Filter

Cooling System and Spark Plug Checks

Cleaning the Mower Cooling System

Checking the Mower Spark Plug Condition

Fuel System Maintenance and Emissions Filter

Servicing the Emissions Filter on Model 74625

Electrical System Maintenance and Battery Care

Removing the Battery and Associated Safety Warnings

Charging the Mower Battery

Battery Installation and Servicing the Fuses

Installing the Mower Battery Safely

Servicing the Mower's Electrical Fuses

Drive System Maintenance Procedures

Checking and Maintaining Tire Pressure

Manually Releasing the Electric Brake