Toro 73580 Operator's Manual
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Toro 73580 Operator's Manual

Toro 73580 Operator's Manual

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FORM NO. 3321–980
Wheel Horse
520Lxi Tractor
Model No. 73580 – 9900001 & UP
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.
International English (GB)

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  • Page 1 FORM NO. 3321–980 Wheel Horse 520Lxi Tractor Model No. 73580 – 9900001 & UP 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.
  • Page 2 Read this manual carefully to learn how to operate and maintain your product correctly. Reading this All of us at Toro want you to be completely satisfied manual will help you and others avoid personal injury with your new product, so feel free to contact your and damage to the product.

  • Page 3: Table Of Contents

    Contents Page Page Re–centering the Steering Wheel ..Safety ....... . . Attachment Power Lift .

  • Page 4: Safety

    Safety Safe Operation Practices for All drivers should seek and obtain professional and practical instruction. Such instruction should Ride-on (riding) Rotary emphasize: Lawnmower Machines the need for care and concentration when working with ride-on machines; This machine meets or exceeds European control of a ride-on machine sliding on a Standards in effect at the time of production.
  • Page 5 Safety If fuel is spilled, do not attempt to start the When using any attachments, never direct engine but move the machine away from discharge of material toward bystanders nor the are of spillage and avoid creating any allow anyone near the machine while in source of ignition until petrol vapors have operation.

  • Page 6: Sound Pressure Level

    Safety before making height adjustment unless To reduce the fire hazard, keep the engine, adjustment can be made from the operator’s silencer, battery compartment and petrol storage position. area free of grass, leaves, or excessive grease. 14. Reduce the throttle setting during engine run-out Check the grass catcher frequently for wear or and, if the engine is provided with a shut-off deterioration.

  • Page 7: Slope Chart

    Safety Slope Chart Read all safety instructions on pages 2–10.

  • Page 9: Safety And Instruction Decals

    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 SEAT BRACKET ON DRIVE SHAFT COVER (Part No. 99–2986) (Part No.

  • Page 10: Symbols Glossary

    Safety Symbols Glossary Safety alert symbol Dismemberment–Mower in rearward motion Safety alert symbol Stay a safe distance from the machine Read operator’s manual Stay a safe distance Consult Technical Manual for from the mower proper service procedures Keep children a safe distance Thrown or flying objects–...

  • Page 11: Symbols Glossary

    Safety Symbols Glossary Cutting element– Riding on this machine is allowed basic symbol only on a passenger seat & only if the driver’s view is not hindered Cutting element– height adjustment Crushing of fingers or hands–Force applied Cutting unit–lower from side Cutting unit-raised Kickback or upward motion–Stored energy...

  • Page 12: Symbols Glossary

    Safety Symbols Glossary Fuel Fast Slow Fuel level Decreasing/Increasing Volume empty On/Run Volume full Off/Stop Engine Battery charging conditin Engine start Head lights– Main/high beam Engine stop Brake system Choke Parking brake Clutch Engine temperature PTO (Power Take Off) Engine lubricating Engage oil pressure Disengage...

  • Page 13: Check Before Operating

    Check Before Operating Each time before operating your tractor, check the following: Fuel level Engine oil level Cooling system fluid level and radiator screen Debris on the (3) air intake screens Debris in the engine area m–3584 Figure 1 Debris on the rear transaxle cover 1.

  • Page 14: Closing The Hood

    Check Before Operating Closing the Hood The hood catch is located at the left hand corner of the grille. Press rearward on the hood catch as you begin to lower the hood. Push the hood down until the latch closes. m–3318 Figure 3 1.

  • Page 15: Adding Fuel

    Check Before Operating Adding Fuel Use UNLEADED Regular Gasoline suitable for POTENTIAL HAZARD automotive use (85 pump octane minimum). Leaded When fueling, under certain circumstances, regular gasoline may be used if unleaded regular is a static charge can develop, igniting the not available.

  • Page 16: Check The Engine Oil Level

    Check Before Operating Clean around the fuel tank cap and remove the cap. Use a funnel and add fuel until the fuel level is 1/4 to 1/2 inch (6 mm to 13 mm) below the bottom of the filler neck. This space in the tank allows for expansion of the fuel.

  • Page 17: Check The Cooling System

    Check Before Operating Check the Cooling System Check Radiator Coolant The cooling system is filled with a 50/50 solution of water and permanent ethylene glycol anti–freeze. Check the level of coolant at the beginning of each day before starting the engine. POTENTIAL HAZARD Coolant is hot and pressurized.

  • Page 18: Check For Debris

    Check Before Operating Check for Debris IMPORTANT: Operating the engine with a blocked grass screen and/or cooling shrouds removed, will result in engine damage from overheating. 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”...

  • Page 19: Check The Safety Interlock System

    Check Before Operating The rear transaxle cover is an air intake area for Check the Safety Interlock cooling the transaxle. Clean debris from the rear System transaxle cover before operating the tractor (Fig. 10). Always check the interlock system before operating the tractor.

  • Page 20: Operation

    Operation Think Safety First “Key Choice” Key Please carefully read all the safety instructions on A turn and release key used for deactivating the pages 2–7. Knowing this information could help you, “Operating–In–Reverse” interlock feature. Located your family, pets or bystanders avoid injury. on the seat bracket in front of and just below the seat (Fig.

  • Page 21: Starting And Stopping The Engine

    Operation Releasing the Parking Brake Note: Allowing the engine to warm up before putting it under load will lengthen Push down on the brake pedal (Fig. 11). The engine life. parking brake lever should release. Release the brake pedal. Starting and Stopping the Engine Starting Sit down on the seat.

  • Page 22: Operating The Power Take Off (Pto)

    Operation Operating the The Safety Interlock System Power Take Off (PTO) Understanding the Safety Interlock System The power take–off (PTO) switch engages and disengages power to the electric clutch. The safety interlock system is designed to prevent the engine from starting unless: If the ignition key is in the RUN or LIGHTS position and the power take off (PTO) is engaged, the PTO You are sitting on the seat...
  • Page 23 Operation Before deactivating this feature, be sure there are no children present on or near the property where you are using the tractor, and that none are likely to appear POTENTIAL HAZARD while you are mowing or operating an attachment. Be A child or bystander could be backed over extra observant after you have chosen to deactivate by a riding mower with its blade(s)

  • Page 24: Testing The Safety Interlock System

    Operation Fully depress the brake pedal and set the parking brake. Push the PTO switch to OFF and rise from the seat. Now turn the ignition key to START. The starter should not crank. Fully depress the brake pedal and set the parking brake.

  • Page 25: Gauges And Indicator Lights

    Operation Gauges and Indicator Lights comes on at a higher RPM, it is important to have your battery and electrical system checked and the problem corrected. The indicator lights (Fig. 18) illuminate when certain controls are activated and when major malfunctions occur that need immediate attention.

  • Page 26: Driving Forward Or Backward

    Operation Engine Water Temperature Gauge This gauge shows the water temperature in the engine. If the gauge enters the red zone, disengage the POTENTIAL HAZARD PTO and allow the engine to cool while continuing to Excessive speed on slopes can result in run the engine.

  • Page 27: Stopping The Machine

    Operation Re–centering the Steering Wheel The power steering will not always return the steering wheel to the centered position. When this happens, the steering wheel will appear to be un–centered when the front wheels return to the straight–ahead position. This is not a mechanical problem, but if it happens to m–3258 your vehicle and you wish to re–center the steering Figure 19...

  • Page 28: Attachment Power Lift

    Operation Attachment Power Lift Lowering Attachments Start the tractor. The attachment power lift (Fig. 20) is used to raise and lower attachments. Push the lift lever DOWN to lower the attachment (Fig. 21). Figure 21 1. Lift lever–Up 2. Lift lever–Down m–3258 Figure 20 1.

  • Page 29: Headlights And Taillights

    Operation Headlights and Taillights The headlights and taillights are turned on by turning the ignition key to the LIGHTS position. They can be turned on even if the engine is not running. Remove the ignition key when leaving the machine unattended so that the headlights cannot be turned on and discharge the battery.

  • Page 30: The Smart Turnt Steering Feature

    Operation The cruise control has a “speed–up” feature: If you initially set it to any speed other than full speed, you can speed up with your foot on the POTENTIAL HAZARD traction pedal for as long as you wish. When you release the traction pedal, the pre–selected cruise Excessive speed when turning can result in rollover accidents.

  • Page 31: Maintenance

    Maintenance Service Interval Chart Each Storage Service Operation Hours Hours Hours Hours Hours Service Engine Oil—check level Engine Coolant—check level Radiator Screen—check for debris* Brake—check Safety System—check (3) Air Intake Screens—clean* Engine Area—clean* Rear Transaxle Cover—clean* Engine Oil—change Initial Engine Air Precleaner—clean* Tires—check pressure Battery—check electrolyte level Transaxle—check oil level...

  • Page 32: Air Cleaner

    Maintenance POTENTIAL HAZARD If you leave the key in the ignition switch, someone could start the engine. WHAT CAN HAPPEN Accidental starting of the engine could seriously injure you or other bystanders. HOW TO AVOID THE HAZARD Remove the key from the ignition switch and pull the wire(s) off the spark plug(s) before you do any maintenance.
  • Page 33 Maintenance Cleaning the Paper Element Clean the paper element by tapping it gently on a flat surface to remove dust. Inspect the element for tears, an oily film, and damage. If the element is very dirty or damaged, replace it with a new one. IMPORTANT: Never clean the paper element with pressurized air or liquids, such as solvent, gas, or kerosene.

  • Page 34: Engine Oil

    Maintenance Engine Oil Service Interval/Specification POTENTIAL HAZARD Components under the hood will be hot if Change oil: the tractor has been running. After the first 5 operating hours. WHAT CAN HAPPEN Touching hot components can cause burns. After every 100 operating hours. HOW TO AVOID THE HAZARD Oil Type: Detergent oil (API service SG or SH) Allow the tractor to cool before performing...

  • Page 35: Changing The Engine Oil Filter

    Maintenance Changing the Engine Oil Filter Service Interval/Specification Replace the oil filter after every 200 hours or every other oil change. Drain the oil from the engine; refer to Changing/Draining Oil, page 32. Place a drip pan beneath the oil drip tray to receive oil from the oil filter and oil passages in the engine.

  • Page 36: Changing The Engine Coolant

    Maintenance Changing the Engine Coolant Open the coolant drain at the bottom of the radiator and allow coolant to flow into a drain pan. When coolant stops flowing, close the drain. Remove the coolant plug from the engine and POTENTIAL HAZARD allow coolant to flow into the drain pan.

  • Page 37: Removing The Spark Plugs

    Maintenance Removing the Spark Plugs Checking the Spark Plugs Disengage the power take off (PTO), set the Look at the center of the spark plug(s) (Fig. 34). parking brake, lower the attachment lift, and turn If you see light brown or gray on the insulator, the ignition key to “STOP”...

  • Page 38: Greasing And Lubrication

    Maintenance Push the wire(s) onto the spark plug(s) (Fig. 33). Close the hood. Greasing and Lubrication Service Interval/Specification Grease the machine after every 50 operating hours or m–3240 yearly, whichever occurs first. Grease more frequently when operating conditions are extremely dusty or Figure 35 sandy.

  • Page 39: Tire Pressure

    Maintenance POTENTIAL HAZARD Rotating shaft or cooling fan can cause injury. WHAT CAN HAPPEN Fingers, hands, feet, hair, etc. can get caught by shaft or fan. Loose clothing can get caught by shaft. m–3420 HOW TO AVOID THE HAZARD Figure 38 Do not operate the tractor without the drive shaft cover in place.

  • Page 40: Brake

    Maintenance Brake 2” Always set the parking brake when you stop the machine or leave it unattended. Check the brake before each use. If the parking brake does not hold securely, an adjustment is required. Checking the Brake Park the machine on a level surface, disengage m–3418 the power take off (PTO), put the High–Low Figure 40...

  • Page 41: Fuel Tank

    Maintenance Fuel Tank Draining The Fuel Tank POTENTIAL HAZARD In certain conditions gasoline is extremely flammable and highly explosive. m–3263 WHAT CAN HAPPEN Figure 42 A fire or explosion from gasoline can burn 1. Fuel shut-off valve you, others, and cause property damage. HOW TO AVOID THE HAZARD Drain gasoline from the fuel tank when the engine is cold.

  • Page 42: Fuel Filter

    Maintenance Install the fuel line onto the fuel shut-off valve. Push fuel lines onto the new filter, and slide hose Slide the hose clamp close to the valve to secure clamps close to the filter (Fig. 44). Make sure the fuel line (Fig. 43). The fuel shut–off valve the flow direction arrow points toward the should normally be left open, except for service engine\fuel pump.

  • Page 43: Front Wheel Toe-In

    Maintenance Front Wheel Toe-In Service Interval/Specification Maintaining correct front wheel toe–in is important for safety, Automatic Speed Reduction operation, and ease of use. If uneven tire wear, lawn scuffing or hard steering develop, adjustment may be required. Check the toe-in after every 100 operating hours or once a year, whichever occurs first (Fig.

  • Page 44: Transaxle Fluid

    Maintenance m–3583 m–3260 Figure 47 Figure 48 View from front of tractor looking at end of tie rod 1. Transmission dipstick and filler tube 1. This 2. Not this Pull out the transmission dipstick and wipe the Recheck the toe–in; refer to Measuring Toe–In, metal end clean (Fig.
  • Page 45 Maintenance Changing Transaxle Oil Change the transaxle filter; refer to Changing the Transaxle Filter, page 43. Replace the transaxle fluid at 50 hours initially, then Slowly pour the specified refill capacity of oil every 200 hours thereafter. into the filler tube (Fig. 48). Fluid Type: SAE 10W–30 Detergent oil (API service Start the engine, let it run for 30 seconds at high SG, SH or above)

  • Page 46: Fuse

    Maintenance Install the replacement transaxle filter to the Headlights filter adapter. Turn the filter clockwise until the rubber gasket contacts the filter adapter, then Specification: Bulb # 1156 Automotive Type tighten the filter an additional 3/4 turn (Fig. 51). Fill the transaxle with the proper type of new oil; Removing the Bulb refer to Changing/Draining Transaxle Fluid, Disengage the power take off (PTO), set the...

  • Page 47: Taillights

    Maintenance Installing the Bulb Taillights The bulb has metal pins on the side of its base. Bulb: GE 194 Align the pins with the slots in the bulb holder and insert the base into the holder (Fig. 54). Push and rotate the bulb clockwise until it stops. Removing the Bulb Disengage the power take off (PTO), set the parking brake, lower the attachment lift, and turn...

  • Page 48: Battery

    Maintenance Battery Remove the battery shield. Open the cell covers to see into the cells. The Service Interval/Specification electrolyte must be up to the lower part of the tube (Fig. 57). Do not allow the electrolyte to get Check the electrolyte level in the battery every 25 below the plates.
  • Page 49 Maintenance Slowly pour distilled water into each battery cell IMPORTANT: Always hold the battery until the level is up to the lower part of the tube vertical to avoid spilling battery acid. (Fig. 57). IMPORTANT: Do not overfill the battery because electrolyte (sulfuric acid) can cause POTENTIAL HAZARD severe corrosion and damage to the chassis.

  • Page 50: Charging The Battery

    Maintenance Replace the front grille of the tractor, securing it with the two previously removed screws and washers (Fig. 56). Charging the Battery IMPORTANT: Always keep the battery fully charged (1.260 specific gravity). This is especially important to prevent battery damage when the temperature is below 32 F (0 C).

  • Page 51: Wiring Diagram

    Maintenance Wiring Diagram...

  • Page 52: Wiring Diagram

    Maintenance Wiring Diagram...

  • Page 53: Cleaning And Storage

    Maintenance Cleaning and Storage Remove the battery from the chassis, check the electrolyte level, and charge it fully; refer to Battery, page 46. Do not connect the battery Disengage the power take off (PTO), set the cables to the battery posts during storage. parking brake, and turn the ignition key to “STOP”...

  • Page 54: Troubleshooting

    Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION The starter does not crank. The PTO is ON. Move the PTO to OFF. The brake is not depressed or Set the parking brake. the parking brake is not on. The operator is not seated. Sit on the seat.
  • Page 55 Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION The engine starts, but does not Misadjusted or faulty choke or Contact your Authorized keep running eep u throttle control cable. Service Dealer. The fuel tank vent is Contact your Authorized restricted. Service Dealer. Dirt or water in the fuel Drain and flush the fuel system.
  • Page 56 Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION The engine overheats. More coolant is needed. Check and add coolant. (3) air intake screens are Clean with every use. dirty. Restricted air flow into the Inspect and clean the radiator engine. screen with every use. Radiator fins are dirty.
  • Page 57 Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION The tractor will not operate in The High–Low range lever is Move the High–Low range either direction. e t e d ect o in “N.” lever to “L” or “H.” The transmission oil is low. Fill to the full “F”...
  • Page 58 Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION Abnormal vibration or noise. The engine mounting bolts Tighten the engine mounting are loose. bolts. The idler pulley or cutter deck Tighten the appropriate blade is loose. pulley. The transaxle cooling fan is Contact your Authorized loose.

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Wheel horse 520lxi

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