Toro 73550 Manuel utilisateur

Operator’s Manual

IMPORTANT: Read this manual carefully. It contains information about your

safety and the safety of others. Also become familiar with the controls and

their proper use before you operate the product.

FORM NO. 3319–220

Wheel Horse

523Dxi Tractor

Model No. 73550 – 8900001 & Up

The Toro Company – 1997

Introduction

Thank you for purchasing a Toro product.

All of us at Toro want you to be completely satisfied

with your new product, so feel free to contact your

local Authorized Service Dealer for help with service,

genuine replacement parts, or other information you

may require.

Whenever you contact your Authorized Service

Dealer or the factory, always know the model and

serial numbers of your product. These numbers will

help the Service Dealer or Service Representative

provide exact information about your specific

product. You will find the model and serial number

plate located in a unique place on the product as

shown below.

m–2345

1. Model and Serial Number Plate

For your convenience, write the product model and

serial numbers in the space below.

Model No:

Serial No.

Read this manual carefully to learn how to operate

and maintain your product correctly. Reading this

manual will help you and others avoid personal injury

and damage to the product. Although we design,

produce and market safe, state-of-the-art products,

you are responsible for using the product properly

and safely. You are also responsible for training

persons, who you allow to use the product, about safe

operation.

The warning system in this manual identifies

potential hazards and has special safety messages that

help you and others avoid personal injury, even death.

DANGER, WARNING and CAUTION are signal

words used to identify the level of hazard. However,

regardless of the hazard, be extremely careful.

DANGER signals an extreme hazard that will cause

serious injury or death if the recommended

precautions are not followed.

WARNING signals a hazard that may cause serious

injury or death if the recommended precautions are

not followed.

CAUTION signals a hazard that may cause minor or

moderate injury if the recommended precautions are

not followed.

Two other words are also used to highlight

information. “Important” calls attention to special

mechanical information and “Note” emphasizes

general information worthy of special attention.

The left and right side of the machine is determined

by sitting on the seat in the normal operator’s

position.

The engine exhaust from this product

contains chemicals known to the State of

California to cause cancer, birth defects,

or other reproductive harm.

Contents

Page

Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safe Operating Practices 2. . . . . . . . . . . . . .

Slope Chart 5. . . . . . . . . . . . . . . . . . . . . . . . .

Safety and Instruction Decals 7. . . . . . . . . .

Check Before Operating 8. . . . . . . . . . . . . . . . . .

Opening the Hood 8. . . . . . . . . . . . . . . . . . .

Closing the Hood 9. . . . . . . . . . . . . . . . . . . .

Removing the Side Panels 9. . . . . . . . . . . . .

Adding Fuel 10. . . . . . . . . . . . . . . . . . . . . . . .

Draining Water from the Fuel Filter/Water

Separator 11. . . . . . . . . . . . . . . . . . . . . . . . .

Check the Engine Oil Level 11. . . . . . . . . . . .

Check the Cooling System 12. . . . . . . . . . . . .

Check for Debris 13. . . . . . . . . . . . . . . . . . . .

Check the Safety Interlock System 14. . . . . .

Check the Brake 14. . . . . . . . . . . . . . . . . . . . .

Operation 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Think Safety First 15. . . . . . . . . . . . . . . . . . .

Controls 15. . . . . . . . . . . . . . . . . . . . . . . . . . .

Parking Brake 15. . . . . . . . . . . . . . . . . . . . . . .

Starting and Stopping the Engine 16. . . . . . .

Operating the Power Take Off (PTO) 17. . . .

Check the Safety Interlock System 17. . . . . .

Gauges and Indicator Lights 18. . . . . . . . . . .

Driving Forward or Backward 19. . . . . . . . . .

Stopping the Machine 20. . . . . . . . . . . . . . . .

Page

Re–centering the Steering Wheel 20. . . . . . . .

Attachment Power Lift 21. . . . . . . . . . . . . . . .

Positioning the Seat 22. . . . . . . . . . . . . . . . . .

Headlights and Taillights 22. . . . . . . . . . . . . .

Positioning the Tilt Steering Wheel 22. . . . . .

Using the Cruise Control 23. . . . . . . . . . . . . .

The Smart TurnSteering Feature 24. . . . . .

Pushing the Machine by Hand 24. . . . . . . . . .

Maintenance 25. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Interval Chart 25. . . . . . . . . . . . . . . .

Engine Oil 27. . . . . . . . . . . . . . . . . . . . . . . . .

Changing the Engine Coolant 29. . . . . . . . . .

Greasing and Lubrication 30. . . . . . . . . . . . . .

Tire Pressure 31. . . . . . . . . . . . . . . . . . . . . . . .

Brake 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fuel Tank 33. . . . . . . . . . . . . . . . . . . . . . . . . .

Fuel Filter 34. . . . . . . . . . . . . . . . . . . . . . . . . .

Front Wheel Toe-In 34. . . . . . . . . . . . . . . . . .

Transaxle Fluid 35. . . . . . . . . . . . . . . . . . . . . .

Fuses 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Headlights 37. . . . . . . . . . . . . . . . . . . . . . . . .

Taillights 38. . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery 39. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring Diagram 42. . . . . . . . . . . . . . . . . . . . .

Cleaning and Storage 44. . . . . . . . . . . . . . . . .

Troubleshooting 45. . . . . . . . . . . . . . . . . . . . . . . . .

Safety

This machine meets or exceeds the B71.1–1996

specifications of the American National Standards

Institute, in effect at the time of production.

However, improper use or maintenance by the

operator or owner can result in injury. To reduce

the potential for injury, comply with these safety

instructions and always pay attention to the safety

alert symbol, which means CAUTION,

WARNING, or DANGER—“personal safety

instruction.” Failure to comply with the

instruction may result in personal injury or death.

Safe Operating Practices

This product is capable of amputating hands and feet

and throwing objects. Always follow all safety

instructions to avoid serious injury or death.

POTENTIAL HAZARD

•Engine exhaust contains carbon monoxide,

which is an odorless, deadly poison.

WHAT CAN HAPPEN

•Carbon monoxide can kill you and is also

known to the State of California to cause

birth defects.

HOW TO AVOID THE HAZARD

•Do not run engine indoors or in an enclosed

area.

General Operation

1. Read, understand, and follow all instructions in

the operator’s manual and on the machine before

starting.

2. Allow only responsible adults who are familiar

with the instructions to operate the machine.

3. Clear the area of objects such as rocks, toys,

wire, etc., which could be picked up and thrown

by the blade.

4. Be sure the area is clear of other people before

mowing. Stop the machine if anyone enters the

area.

5. Never carry passengers.

6. Do not mow in reverse unless absolutely

necessary. Always look down and behind before

and while backing.

7. Be aware of the mower discharge direction and

do not point it at anyone. Do not operate the

mower without either the entire grass catcher or

the guard in place.

8. Slow down before turning. Sharp turns on any

terrain may cause loss of control.

9. Never leave a running machine unattended.

Always turn off blades, set parking brake, stop

engine, and remove key before dismounting.

10. Turn off blades when not mowing.

11. Keep hands, feet, hair and loose clothing away

from attachment discharge area, underside of

mower and any moving parts while engine is

running.

12. Stop the engine before removing the grass

catcher or unclogging the chute.

Safety

13. Mow only in daylight or good artificial light.

14. Do not operate the machine while under the

influence of alcohol or drugs.

15. Watch for traffic when operating near or crossing

roadways.

16. Use extra care when loading or unloading the

machine onto a trailer or truck.

17. Do not touch equipment or attachment parts

which may be hot from operation. Allow to cool

before attempting to maintain, adjust or service.

Slope Operation

Slopes are a major factor related to loss-of-control

and tip-over accidents, which can result in severe

injury or death. All slopes require extra caution. If

you cannot back up the slope or if you feel uneasy on

it, do not mow it.

•Mow up and down slopes greater than 5°, not

across.

•Mow downhill only on slopes above 10°, never

mow uphill. If a steep slope must be ascended,

back up the hill, and drive forward down the hill,

keeping the machine in gear.

•Remove obstacles such as rocks, tree limbs, etc.

from the mowing area. Watch for holes, ruts or

bumps, as uneven terrain could overturn the

machine. Tall grass can hide obstacles.

•Use slow speed. Choose a low gear so that you

will not have to stop or shift while on the slope.

•Follow the manufacturer’s recommendations for

wheel weight or counterweights to improve

stability.

•Use extra care with grass catchers or other

attachments. These can change the stability of

the machine.

•Keep all movement on slopes slow and gradual.

Do not make sudden changes in speed or

direction.

•Avoid starting or stopping on a slope. If tires

lose traction, disengage the blades and proceed

slowly straight down the slope.

DO NOT

•Do not operate machine on hillsides or slopes

exceeding 15°.

•Avoid turning on slopes. If you must turn, turn

slowly and gradually downhill, if possible.

•Do not mow near drop-offs, ditches, or

embankments. The machine could suddenly turn

over if a wheel goes over the edge of a cliff or

ditch, or if an edge caves in.

•Do not mow on wet grass. Reduced traction

could cause sliding.

•Do not try to stabilize the machine by putting

your foot on the ground.

•Do not use a grass catcher on steep slopes.

Heavy grass bags could cause loss of control or

overturn the machine.

Safety

Children

Tragic accidents can occur if the operator is not alert

to the presence of children. Children are often

attracted to the machine and the mowing activity.

Never assume that children will remain where you

last saw them. The following requirements must be

followed to prevent injury to children.

1. Keep children out of the mowing area and under

the watchful care of another responsible adult.

2. Be alert and turn the machine off if children

enter the area.

3. Before and while backing, look behind and down

for small children.

4. Never carry children. They may fall off and be

seriously injured or interfere with safe machine

operation.

5. Never allow children to operate the machine.

6. Use extra care when approaching blind corners,

shrubs, trees, the end of a fence or other objects

that may obscure vision.

Service

1. Stop the engine, set the parking brake, and

remove the key from the igntion switch before

performing any service, repairs, maintenance or

adjustments.

2. Use extra care when handling gasoline and other

fuels. They are flammable and vapors are

explosive.

A. Use only an approved container.

B. Never remove the gas cap or add fuel when

the engine is running. Allow the engine to

cool before refueling. Do not smoke.

C. Never refuel the machine indoors.

D. Never store the machine or fuel container

inside where there is an open flame, such as

near a water heater or furnace.

3. Never run a machine inside a closed area.

4. Keep nuts and bolts tight, especially the blade

attachment bolts. Keep equipment in good

condition.

5. Never tamper with safety devices. Check safety

systems for proper operation before each use.

6. Keep the machine free of grass, leaves, or other

debris build-up. Clean up oil or fuel spillage.

Allow the machine to cool before storing.

7. Stop and inspect the equipment if you strike an

object. Repair, if necessary, before restarting.

8. Grass catcher components are subject to wear,

damage and deterioration, which could expose

moving parts or allow objects to be thrown.

Frequently check components and replace with

manufacturer’s recommended parts, when

necessary.

9. Mower blades are sharp and can cut. Wrap the

blade(s) or wear gloves, and use extra caution

when servicing them.

10. Use only genuine replacement parts to ensure

that original standards are maintained.

11. Check brake operation frequently. Adjust and

service as required.

12. Battery acid is poisonous and can cause burns.

Avoid contact with skin, eyes and clothing.

Protect your face, eyes and clothing when

working with a battery.

13. Battery gases can explode. Keep cigarettes,

sparks and flames away from battery.

Safety

Slope Chart

Read all safety instructions on pages 2–4.

Safety

Safety and Instruction Decals

Safety decals and instructions are easily visible to the operator and are located near

any area of potential danger. Replace any decal that is damaged or lost.

ON DRIVE SHAFT TUNNEL

(Part No. 80–8760)

ON DRIVE SHAFT COVER

(Part No. 95–4263)

ON RADIATOR FAN

SHROUD

(Part No. 95–4143)

(2) UNDER SIDE SHIELD

(Part No. 98–5014)

ON REAR FENDER

(Part No. 98–3088)

(2) INSIDE FRONT GRILL

(Part No. 93–8069)

Check Before Operating

Each time before operating your tractor, check the

following:

•Fuel level

•Water drained from the fuel filter

•Engine oil level

•Cooling system fluid level and radiator screen

•Debris on the (3) air intake screens

•Debris in the engine area

•Debris on the rear transaxle cover

•The safety interlock system

•The brake

Some of these steps will require that you open the

hood or remove the side panels on the tractor.

Opening the Hood

To open the hood:

1. Park the machine on a level surface, disengage

the power take off (PTO), set the parking brake,

lower the attachment lift, and turn the ignition

key to “STOP” to stop the engine. Remove the

key.

2. Push the hood latch (Fig. 1), located just above

the indicator light panel, to the left.

3. Raise the hood to full height.

m–3314

Figure 1

1. Hood latch

POTENTIAL HAZARD

•Components under the hood will be hot if

the tractor has been running.

WHAT CAN HAPPEN

•Touching hot components can cause burns.

HOW TO AVOID THE HAZARD

•Allow the tractor to cool before performing

maintenance or touching components

under the hood.

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