Toro Groundsmaster 120

Questions and Answers

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trevor09Aug 20, 2025
Why does my Toro Groundsmaster 120 engine will not start?
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  morganwilliamsonAug 20, 2025
  If your Toro Lawn Mower engine won't start, starts hard, or fails to keep running, make sure you are sitting on the seat and the parking brake is engaged. Check that the fuel tank is filled with gasoline and the choke lever is set to ON. You may also need to clean or replace the air cleaner element, install the wire(s) on the spark plug(s), install a new, correctly-gapped spark plug(s), or replace the fuel filter.
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andrewhicksAug 22, 2025
Why is my Toro Lawn Mower engine losing power?
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  Nicole LarsenAug 22, 2025
  If your Toro Lawn Mower engine loses power, first reduce your ground speed. Other possible solutions include cleaning the air cleaner element, adding oil to the crankcase, removing any obstructions from the cooling fins and air passages, installing a new, correctly-gapped spark plug(s), cleaning or replacing the fuel cap, or replacing the fuel filter.
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Daniel RojasAug 25, 2025
Why is my Toro Groundsmaster 120 Lawn Mower engine overheating?
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  Kathy ObrienAug 25, 2025
  If your Toro Lawn Mower engine is overheating, try reducing your ground speed. Also, check the oil level in the crankcase and add oil if needed. Make sure there are no obstructions blocking the cooling fins and air passages.
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Justin SchmidtAug 26, 2025
What to do if my Toro Groundsmaster 120 does not drive?
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  Thomas MurphyAug 26, 2025
  If your Toro Lawn Mower does not drive, adjust the belt tension or replace the belt.
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Stephanie ScottAug 27, 2025
How to fix uneven cutting height on my Toro Lawn Mower?
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  huertachristianAug 28, 2025
  An uneven cutting height with your Toro Lawn Mower can occur due to several reasons. The blades might not be sharp, requiring you to sharpen them. Bent cutting blades should be replaced. Ensure the mower is level from side to side and front to rear. A dirty mower underside needs cleaning. Incorrect tire pressure should be adjusted. If the blade spindle is bent, contact an Authorized Service Dealer.
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Deborah DavidsonAug 29, 2025
Why my Toro Lawn and Garden Equipment engine will not start?
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  Sara LewisAug 30, 2025
  If your Toro Lawn and Garden Equipment engine won't start, starts hard, or fails to keep running, there are several things to check. Make sure you're seated and the parking brake is engaged. Ensure the fuel tank isn't empty and the choke is on. A dirty air cleaner can cause issues, so clean or replace the air cleaner element. Also, check that the spark plug wire is securely connected, and the spark plug isn't damaged or improperly gapped; replace it if needed. Finally, a dirty fuel filter could be the problem, so replace it. If the issue persists, there may be dirt, water, or stale fuel in the fuel system, and you should contact an Authorized Service Dealer.
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mariobaileySep 1, 2025
What to do if my Toro Lawn Mower starter does not rotate?
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  Wendy BoydSep 1, 2025
  If the starter on your Toro Lawn Mower does not rotate, ensure that the PTO switch is DISENGAGED and the traction control pedal is in the neutral position. Check the electrical connections for good contact and replace the fuse if necessary. Also, ensure the battery is charged.
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Brandon HallSep 2, 2025
What to do if my Toro Lawn Mower has abnormal vibration?
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  anthony32Sep 2, 2025
  If your Toro Lawn Mower is experiencing abnormal vibration, start by tightening the engine mounting bolts and the appropriate pulley.
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Alec PayneSep 4, 2025
Why is my Toro Lawn Mower vibrating abnormally?
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  Andrew JonesSep 5, 2025
  Abnormal vibration in your Toro Lawn Mower can stem from several sources. It might be due to bent or unbalanced cutting blades, which necessitates installing new ones. Alternatively, check if the blade mounting bolt or engine mounting bolts are loose and tighten them accordingly. Also, inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten if needed. If the engine pulley is damaged or the blade spindle is bent, it is recommended to contact an Authorized Service Dealer.
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Kelly JacksonSep 7, 2025
What to do if the blades on my Toro Lawn Mower won't rotate?
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  Joseph BaileySep 7, 2025
  If the blades of your Toro Lawn Mower are not rotating, the possible causes are: * A worn, loose, or broken drive belt, which requires a replacement. * The drive belt is off the pulley, so it should be reinstalled, and the traction unit idler pulley, idler arm, and spring should be checked. * A worn, loose, or broken deck belt, which also requires a replacement. * Too loose deck idler pulley tension, which can be fixed by repositioning the spring anchor on the deck. * The deck belt is off the pulley, so it should be reinstalled, and the idler pulley, idler arm, and spring should be checked.

Summary

Introduction

Safety

Safe Operating Practices

Instructions for safe operation from ANSI standard B71.4-1999, covering training and preparation.

Operation

General Operation

Guidelines for general operation, including responsible adults, clearing areas, and safe movement.

Slope Operation

Guidelines for operating on slopes and ramps, emphasizing caution to prevent tip-over accidents and severe injury.

Toro Mower Safety

Service

Slope Chart

Safety and Instruction Decals

Gasoline and Oil

Recommended Gasoline

Specifies the type of unleaded regular gasoline suitable for automotive use.

Filling the Fuel Tank

Step-by-step instructions for safely filling the fuel tank, including safety precautions.

Checking the Engine Oil Level

Instructions to check the engine oil level before starting and using the machine.

Assembly

Loose Parts

List of parts included with the machine to verify shipment contents.

Installing the Seat

Procedure for mounting the seat assembly to the seat plate and connecting the switch wire.

Installing the Steering Wheel

Steps to mount the steering wheel and spacer onto the steering shaft, securing with a roll pin.

Activating the Battery

Instructions for filling the battery with electrolyte and initial charging procedures.

Installing the Battery

Procedure for mounting the battery onto the support and connecting the cables.

Checking the Engine Oil

Starting and Stopping the Engine

Operating the Power Take Off (PTO)

Driving Forward or Backward

Parking Brake

Implement Lift Lever

Safety Interlock System

Positioning the Seat

Pushing or Towing the Machine

Maintenance

Recommended Maintenance Schedule

Schedule detailing maintenance procedures and intervals for optimal machine performance and longevity.

Servicing the Air Cleaner

Cleaning the Foam Element

Procedure for washing and oiling the foam air cleaner element.

Cleaning the Paper Element

Procedure for cleaning the paper air cleaner element by tapping and inspection.

Engine Oil Service

Service Interval;Specification

Details on oil change intervals, recommended oil type, and crankcase capacity.

Checking the Oil Level

Procedure for checking engine oil level using the dipstick, ensuring proper filling.

Changing and Draining Oil

Step-by-step guide for draining old oil and replacing the oil filter.

Changing the Oil Filter

Spark Plug Service

Checking the Spark Plug

Guidance on inspecting spark plug condition and checking the air gap.

Installing the Spark Plug(s)

Steps for installing spark plugs correctly, including tightening and connecting wires.

Greasing and Lubrication

How to Grease

Step-by-step instructions for applying grease to fittings and bearings.

Brake Service

Checking the Brake

Procedure to check if the parking brake holds securely and wheels rotate freely.

Adjusting the Brake

Instructions for adjusting the brake mechanism if it does not hold or rotate freely.

Replacing the Fuel Filter

Tire Pressure Service

Adjusting the Belts

Cleaning the Cooling System

Replacing the Belts

Adjusting the Lift Cylinder and Counterbalance Springs

Adjusting the Transmission Neutral

Adjusting the Electric Clutch

Checking the Hydraulic System Fluid

Changing the Hydraulic System Oil

Changing the Hydraulic Oil Filter

Adjusting the Steering

Changing the Front Axle Oil

Servicing the Battery

Checking the Electrolyte Level

Procedure to check and maintain the battery's electrolyte level.

Servicing the Wire Harness

Waste Disposal

Transporting Machines

Hydraulic Schematic

Wiring Diagram

Cleaning and Storage

Troubleshooting

The Toro Total Coverage Guarantee

Owner Responsibilities

Outlines owner's duties regarding maintenance and care of the Toro product.

Instructions for Obtaining Warranty Service

Steps to follow for obtaining warranty service from an Authorized Toro Service Dealer.

General Conditions

Explains warranty service procedures, limitations, and legal rights.