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Toro 74391 - User Manual

Toro 74391
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FormNo.3358-944RevA
TimeCutter
®
Z5000RidingMower
ModelNo.74391—SerialNo.280000001andUp
Registeratwww.Toro.com.OriginalInstructions(EN)

Table of Contents

Questions and Answers

  • S
    Sally LangAug 17, 2025
    Why does my Toro 74391 Lawn Mower engine lose power?
    • H
      harristaylorAug 17, 2025
      Your Toro Lawn Mower engine may be losing power due to: * Excessive engine load. Try reducing ground speed. * A dirty air cleaner. Clean the air cleaner element. * Low oil level in the crankcase. Add oil to the crankcase. * Plugged cooling fins and air passages. Remove any obstructions. * Faulty spark plug(s). Install a new, correctly gapped spark plug(s). * A closed vent in the fuel cap. Open the vent. * Dirt in the fuel filter. Replace the fuel filter. * Incorrect fuel in the fuel tank. Drain the tank and replace with the proper type. If the problem persists, there may be dirt, water, or stale fuel in the fuel system. In this case, it's best to contact an Authorized Service Dealer.
  • C
    cassiemarshallAug 21, 2025
    How to fix uneven cutting height on my Toro 74391?
    • W
      Wayne HamptonAug 21, 2025
      To address uneven cutting height on your Toro Lawn Mower: * Sharpen the blade(s) if they are not sharp. * Replace bent cutting blade(s) with new ones. * Ensure the mower is level from side-to-side and front-to-rear. * Adjust the anti-scalp wheel height if it is not set correctly. * Clean the underside of the mower if it is dirty. * Adjust the tire pressure if it is incorrect. If a blade spindle is bent, contact an Authorized Service Dealer.
  • J
    John GrayAug 25, 2025
    Why is my Toro 74391 engine overheating?
    • C
      Craig VazquezAug 25, 2025
      Your Toro Lawn Mower engine may be overheating due to several reasons: * The engine load could be excessive, so try reducing the ground speed. * The oil level in the crankcase might be low, so add oil. * The cooling fins and air passages under the engine blower housing could be plugged; remove any obstructions. * The air cleaner might be dirty; clean or replace it. * There may be dirt, water, or stale fuel in the fuel system. In this case, it's best to contact an Authorized Service Dealer.
  • M
    Mr. Cody CisnerosAug 28, 2025
    Why won't the starter crank on my Toro 74391 Lawn Mower?
    • J
      Jessica BradfordAug 28, 2025
      If the starter on your Toro Lawn Mower isn't cranking, check these items: 1. Ensure the blade control switch is disengaged. 2. Confirm the motion control levers are in the park position. 3. Make sure you are seated on the seat. 4. Check the battery charge and charge if necessary. 5. Inspect the electrical connections for corrosion or looseness and ensure good contact. 6. Examine the fuse and replace it if blown. If these steps don't resolve the issue, a relay or switch may be damaged, and you should contact an Authorized Service Dealer.
  • J
    joseph25Sep 1, 2025
    Why does my Toro 74391 Lawn Mower have abnormal vibration?
    • R
      Robert LewisSep 1, 2025
      Abnormal vibration in your Toro Lawn Mower can be caused by: * Loose engine mounting bolts. Tighten them. * A loose engine pulley, idler pulley, or blade pulley. Tighten the appropriate pulley. * Damaged cutting blade(s). Install a new cutting blade(s). * A loose blade mounting bolt. Tighten it. For a damaged engine pulley or a bent blade spindle, contact an Authorized Service Dealer.
  • P
    Patricia PorterSep 4, 2025
    What to do if my Toro Lawn Mower machine does not drive?
    • F
      Francisco PaulSep 4, 2025
      If your Toro Lawn Mower isn't driving, it might be due to: * Open bypass valves. Close the tow valves. For worn, loose, or broken traction belts, traction belts off of the pulleys, or a failed transmission, contact an Authorized Service Dealer.
  • H
    hurleysusanSep 8, 2025
    Why the blades do not rotate on my Toro 74391?
    • W
      william11Sep 8, 2025
      If the blades on your Toro Lawn Mower do not rotate, check if: * The drive belt is worn, loose, or broken. If so, install a new drive belt. * The drive belt is off of the pulley. If so, install the drive belt and check the adjusting shafts and belt guides for the correct position. * The mower belt is worn, loose, or broken. If so, install a new mower belt.
  • A
    Austin BakerNov 12, 2025
    What to do if my Toro 74391 Lawn Mower engine will not start?
    • P
      Phillip HubbardNov 12, 2025
      If your Toro Lawn Mower engine won't start, starts hard, or fails to keep running, consider the following: * Ensure the fuel tank is full; if not, fill it. * Make sure the choke is on; move the choke lever to the 'On' position. * Check if the air cleaner is dirty; clean or replace it. * Verify the spark plug wire(s) are securely connected; install them if loose. * Inspect the spark plug(s) for damage or incorrect gap; replace if needed. * Check for dirt in the fuel filter and replace if necessary. * Ensure the correct fuel type is in the fuel tank; drain and replace if incorrect. * Check the oil level in the crankcase; add oil if low. If the problem persists, there may be dirt, water, or stale fuel in the fuel system, and it is best to contact an Authorized Service Dealer...

Summary

Introduction

Operator Safety

Ride-on Lawnmower Safe Operation Practices

Safety practices for operating riding lawnmower machines.

General Safe Operating Practices

General safety instructions from EN standard EN 836:1997.

Operator Training Recommendations

Guidance on operator training for safe mower use.

Pre-Operation Preparation

Precautions and checks before operating the mower.

Safe Mowing Operations

Safe operating procedures and considerations during mowing.

Toro Riding Mower Specific Safety

Specific safety information pertinent to Toro riding mowers.

Slope Operation Safety

Guidelines and precautions for safe operation on slopes.

Sound Pressure Levels

Information detailing the sound pressure levels of the unit.

Sound Power Levels

Information detailing the sound power levels of the unit.

Vibration Information

Information detailing the vibration levels experienced by the operator.

Mower Slope Chart

Safety and Instructional Decals

Mower Controls

Ignition Switch Operation

Operation of the engine ignition switch.

Throttle and Choke Control

Operation of the combined throttle and choke lever.

Blade Control Switch (PTO)

Operation of the blade engagement switch.

Motion Control Levers

Operation of the machine's drive levers.

Fuel Gauge Operation

How to check the fuel level.

Height-of-Cut Lever Adjustment

How to adjust the cutting deck height.

Battery Symbols

Safety Decals

Product Overview

Operating the Mower

Maintenance and Service

Maintenance Schedule

Schedule of maintenance procedures based on service intervals.

Pre-Maintenance Checks

Steps to take before performing maintenance tasks.

Lubrication and Greasing

Procedures for greasing bearings and lubrication points.

Engine Service

Procedures for servicing the engine, including air cleaner and oil.

Fuel System Service

Procedures for maintaining the fuel system and replacing filters.

Electrical System Service

Procedures for charging the battery and servicing fuses.

Drive System Service

Procedures for checking tire pressure.

Mower Deck Service

Procedures for servicing cutting blades, leveling, and slopes.

Mower Cleaning

Instructions for cleaning the mower, especially the underside.

Machine Storage

Procedures for preparing the machine for storage.

Troubleshooting Guide

Electrical Schematics

International Distributor List

Toro Product Warranty

Toro 74391 Specifications

General IconGeneral
Deck MaterialSteel
Start TypeRecoil
Mulching CapabilityYes
Bagging CapabilityYes
Side Discharge CapabilityYes
Engine TypeGasoline
Cutting Width22 inches
Drive SystemRear-wheel drive
Oil Capacity20 oz (0.6 L)
Fuel Capacity0.25 gal (1 L)
Fuel Tank Capacity0.25 gal (1 L)

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