Toro 74621 User Manual (English)

Questions and Answers:

A
Andrea RoweJul 31, 2025
Why won't my Toro Lawn Mower engine start?
- D
  Debra WilliamsJul 31, 2025
  Several factors can prevent your Toro Lawn Mower engine from starting. First, ensure the fuel tank isn't empty by filling it. If it is not the reason, make sure the choke is on. A dirty air cleaner can also be the culprit, so clean or replace it. Check that the spark plug wire(s) is securely connected to the spark plug. Inspect the spark plug(s) for damage, and replace if needed. Additionally, ensure the fuel filter is clean, and the fuel tank contains the correct type of fuel. Finally, check that the oil level in the crankcase is sufficient and add oil if needed.
T
tiffanyonealAug 5, 2025
Why does my Toro Lawn Mower engine lose power?
- A
  alan03Aug 5, 2025
  If your Toro Lawn Mower engine is losing power, consider these possible causes: The engine load might be excessive, so reduce ground speed. A dirty air cleaner can also cause power loss, so clean the air cleaner element. 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 free from obstructions. Inspect the spark plug(s) and replace them if pitted, fouled, or incorrectly gapped. Finally, if there is incorrect fuel in the fuel tank, drain the tank and replace the fuel with the proper type.
T
Teresa ShannonAug 10, 2025
How to fix uneven cutting height on Toro 74621 Lawn Mower?
- R
  Robert ZunigaAug 10, 2025
  To correct uneven cutting height on your Toro Lawn Mower, consider these factors: Sharpen the blade(s) if they are not sharp. Replace any bent cutting blade(s). Level the mower from side-to-side and front-to-rear. Adjust the anti-scalp wheel height if it's not set correctly. Clean the underside of the mower if it's dirty. Adjust the tire pressure to the correct level.
B
Benjamin KennedyAug 15, 2025
How to fix Toro 74621 Lawn Mower when the engine overheats?
- S
  Seth MartinezAug 15, 2025
  If your Toro Lawn Mower's engine is overheating, there are several potential causes. First, reduce ground speed if the engine load is excessive. Check the oil level in the crankcase and add oil if it's low. Inspect the cooling fins and air passages under the engine blower housing for obstructions and remove them. Also, make sure that the air cleaner is not dirty; clean or replace the air cleaner element if necessary.
J
Jeffrey KnightAug 20, 2025
What to do if my Toro 74621 Lawn Mower starter does not crank?
- J
  John CarterAug 20, 2025
  If the starter on your Toro Lawn Mower isn't cranking, try these steps: Ensure the blade control switch is disengaged. Verify that the motion control levers are in the park position. If the battery is dead, charge it. Check the electrical connections for corrosion or looseness, ensuring good contact. Finally, inspect the fuse and replace it if blown.
S
Shannon PatelAug 26, 2025
How to stop abnormal vibration in my Toro 74621 Lawn Mower?
- R
  Robert SmithAug 26, 2025
  To address abnormal vibration in your Toro Lawn Mower, check the following: Tighten any loose engine mounting bolts. Ensure the engine pulley, idler pulley, or blade pulley are tightened appropriately. Replace the cutting blade(s) if they are bent or unbalanced. Also, tighten any loose blade mounting bolts.

Toro 74621 Specifications

General

Deck Material	Steel
Start Type	Recoil
Mulching Capability	Yes
Engine Type	Gasoline
Cutting Width	22 in
Drive Type	Rear-wheel drive
Engine	Kohler Courage

Summary

Introduction to Mower Operation

Operating Safety and Symbols

Read safety instructions, understand symbols for safe operation.

Safety Guidelines

Safe Operation and General Practices

Follow safety instructions for safe operation and general use.

Slope Operation Precautions

Hazards and essential safety measures for operating on slopes.

Child, Towing, and Fuel Safety

Safety advice for children, towing, and fuel handling.

Service and Toro Specific Safety

Safety rules for maintenance and Toro riding mower specifics.

Slope Indicator

Using the Slope Chart

Instructions for determining slope degrees using the provided chart.

Safety and Instructional Decals

Hazard and Control Decals

Identification and meaning of hazard, control, and maintenance decals.

Height-of-Cut Indicator

Battery Symbols and Bypass Levers

Symbols for battery hazards and lever positions for operation.

Smart Speed™ Control System

Speed Settings and Slope Safety

Explanation of speed ranges and warnings for slopes/transport.

Product Overview and Controls

Mower Controls and Panel Functions

Identification of controls, panel functions, and ignition operation.

Mower Operation Controls

Blade Control, Motion Levers, and Smart Speed™

Operation of blade control, motion levers, and speed system.

Fuel Window and Height-of-Cut

Using the fuel level indicator and adjusting cutting height.

Operation and Safety

Operating Safety and Fuel Handling

Crucial safety advice for operation and fuel handling.

Operation and Safety (continued)

Fueling Hazards and Interlock System

Dangers of fueling and how the safety interlock prevents operation.

Recommended Fuel and Stabilizer Use

Type of gasoline and fuel stabilizers to use.

Starting the Mower

Filling Fuel Tank and Checking Oil

Procedures for filling the fuel tank and checking engine oil.

Engine Starting Procedure

Steps for starting the mower engine safely.

Operating the Blades

Engaging Blades and Control Panel Details

How to engage blades and understand control panel/ignition.

Mower Operation and Safety Checks

Disengaging Blades and Stopping Engine

Steps to disengage blades, stop engine, and test interlocks.

Driving the Mower Safely

How to drive the mower and perform safety checks.

Mower Driving Controls

Motion Lever Operation

Using motion control levers for forward movement and turning.

Smart Speed™ System Usage

How to utilize the variable speed system for optimal control.

Mower Operation Procedures

Backward Driving and Stopping

How to drive in reverse, stop safely, and adjust seat.

Adjusting Cutting Height

How to set the mower deck cutting height.

Adjusting Mower Controls

Motion Control Lever Adjustments

How to adjust motion control lever height and tilt.

Pushing and Operating After Bypass

Steps to push the mower and re-engage drive.

Mowing Operation Tips

Grass Deflector Safety and Mowing Advice

Deflector safety and tips for cutting height, intervals, and cleaning.

Blade Maintenance

Blade Sharpening and Inspection

Importance of sharp blades and daily inspection for wear.

Maintenance Schedule and Procedures

Recommended Maintenance Intervals

Table outlining service intervals and required maintenance tasks.

Premaintenance Safety and Seat Access

Ignition key safety and steps to access components by raising seat.

Lubrication

Greasing Bearings and Service Intervals

Procedures for greasing components and recommended frequency.

Engine Maintenance: Air Cleaner

Servicing and Cleaning Air Cleaner Elements

Steps for cleaning and replacing air cleaner elements.

Engine Maintenance: Oil

Servicing and Changing Engine Oil

Details on oil type, capacity, and procedures for checking/changing oil.

Engine Maintenance: Filters and Spark Plug

Changing Oil Filter and Servicing Spark Plug

Procedures for changing oil filter and servicing spark plug.

Engine Maintenance: Spark Plug

Checking and Installing Spark Plug

How to inspect, gap, and install the spark plug correctly.

Fuel System Maintenance

Fuel System Safety and Filter Replacement

Fuel system safety dangers and filter replacement procedure.

Electrical System Maintenance

Battery Safety, Removal, and Charging

Precautions for battery handling and charging procedures.

Electrical System Maintenance (continued)

Installing Battery and Servicing Fuses

Steps to install battery and replace fuses.

Drive System Maintenance

Checking Tire Pressure and Releasing Brake

Procedures for tire pressure checks and brake release.

Cooling and Mower Maintenance

Cleaning Engine Components and Blades

Cleaning engine screens/fins and inspecting/servicing blades.

Mower Maintenance: Blade Checks

Checking for Bent Blades

Procedure to check if mower blades are bent.

Mower Maintenance: Blade Service

Blade Removal, Sharpening, and Installation

Procedures for blade removal, sharpening, and installation.

Leveling the Mower Deck

Side-to-Side Deck Leveling

Procedure to ensure the mower deck is level from side to side.

Leveling the Mower Deck (continued)

Adjusting Front-to-Rear Blade Slope

How to adjust the mower deck level front to rear.

Removing the Mower Deck

Mower Belt Maintenance

How to check belts for wear and replace them.

Mower Belt Maintenance (continued)

Installing the Mower Deck

Steps to reattach the mower deck to the tractor.

Replacing the Grass Deflector

Procedure to replace a damaged or worn grass deflector.

Cleaning Mower Housing

Washing Underside of Mower

Procedure for cleaning the mower deck underside using water.

Washout Fitting Hazard Warning

Hazard of operating with a broken or missing washout fitting.

Storage and Cleaning

Preparing Mower for Storage

Steps for cleaning and preparing the mower for storage.

Fuel System Preparation for Storage

How to prepare the fuel system for long-term storage.

Storage Preparation (continued)

Long-Term Storage Procedures

Detailed steps for storing the mower for extended periods.

Troubleshooting Engine Problems

Engine Overheating, Starting, and Power Issues

Diagnosing and fixing engine overheating, starting, running, and power problems.

Troubleshooting Other Issues

Vibration, Cutting, and Blade Rotation Issues

Diagnosing and fixing vibration, uneven cutting, and blade rotation problems.

Schematics

Electrical System Diagram

Wiring diagram for the mower's electrical system.

Warranty Information

Emission Control Warranty Details

Details of the emission control system warranty coverage.

Manufacturer's Warranty Coverage

Explanation of warranty coverage provided by Toro.

Owner's Warranty Responsibilities

Owner's duties to maintain warranty eligibility.

General Emissions Warranty Coverage

Specifics of the warranty for emission-related parts.

Emission-Related Parts List

List of Covered Emission Components

List of components covered under the emission warranty.

Toro Total Coverage Warranty

Covered Products and Warranty Periods

Lists products and their respective warranty durations.

Obtaining Warranty Service

Instructions on how to get warranty service for defects.

Warranty Exclusions and Conditions

Details of items and conditions not covered by the warranty.

General Warranty Conditions

Overarching terms and conditions applicable to all warranties.

Related product manuals

Toro 74621 User Manual

Table of Contents

Questions and Answers:

Toro 74621 Specifications

Summary

Introduction to Mower Operation

Operating Safety and Symbols

Safety Guidelines

Safe Operation and General Practices

Slope Operation Precautions

Child, Towing, and Fuel Safety

Service and Toro Specific Safety

Slope Indicator

Using the Slope Chart

Safety and Instructional Decals

Hazard and Control Decals

Height-of-Cut Indicator

Battery Symbols and Bypass Levers

Smart Speed™ Control System

Speed Settings and Slope Safety

Product Overview and Controls

Mower Controls and Panel Functions

Mower Operation Controls

Blade Control, Motion Levers, and Smart Speed™

Fuel Window and Height-of-Cut

Operation and Safety

Operating Safety and Fuel Handling

Operation and Safety (continued)

Fueling Hazards and Interlock System

Recommended Fuel and Stabilizer Use

Starting the Mower

Filling Fuel Tank and Checking Oil

Engine Starting Procedure

Operating the Blades

Engaging Blades and Control Panel Details

Mower Operation and Safety Checks

Disengaging Blades and Stopping Engine

Driving the Mower Safely

Mower Driving Controls

Motion Lever Operation

Smart Speed™ System Usage

Mower Operation Procedures

Backward Driving and Stopping

Adjusting Cutting Height

Adjusting Mower Controls

Motion Control Lever Adjustments

Pushing and Operating After Bypass

Mowing Operation Tips

Grass Deflector Safety and Mowing Advice

Blade Maintenance

Blade Sharpening and Inspection

Maintenance Schedule and Procedures

Recommended Maintenance Intervals

Premaintenance Safety and Seat Access

Lubrication

Greasing Bearings and Service Intervals

Engine Maintenance: Air Cleaner

Servicing and Cleaning Air Cleaner Elements

Engine Maintenance: Oil

Servicing and Changing Engine Oil

Engine Maintenance: Filters and Spark Plug

Changing Oil Filter and Servicing Spark Plug

Engine Maintenance: Spark Plug

Checking and Installing Spark Plug

Fuel System Maintenance

Fuel System Safety and Filter Replacement

Electrical System Maintenance

Battery Safety, Removal, and Charging

Electrical System Maintenance (continued)

Installing Battery and Servicing Fuses

Drive System Maintenance

Checking Tire Pressure and Releasing Brake

Cooling and Mower Maintenance

Cleaning Engine Components and Blades

Mower Maintenance: Blade Checks

Checking for Bent Blades

Mower Maintenance: Blade Service

Blade Removal, Sharpening, and Installation

Leveling the Mower Deck

Side-to-Side Deck Leveling