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Toro 73546 Wheel Horse 520Lxi Operator's Manual
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Toro 73546 Wheel Horse 520Lxi Operator's Manual

Toro 73546 Wheel Horse 520Lxi Operator's Manual

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FORM NO. 3319–218GB
Wheel Horse
520Lxi Tractor
Model No. 73546 – 8900001 & 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.

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Summary of Contents for Toro 73546 Wheel Horse 520Lxi

  • Page 1 FORM NO. 3319–218GB Wheel Horse 520Lxi Tractor Model No. 73546 – 8900001 & 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 General Operation This machine meets or exceeds the B71.1–1996 specifications of the American National Standards Read, understand, and follow all instructions in Institute, in effect at the time of production. the operator’s manual and on the machine before However, improper use or maintenance by the starting.
  • Page 5 Safety 14. Do not operate the machine while under the Keep all movement on slopes slow and gradual. influence of alcohol or drugs. Do not make sudden changes in speed or direction. 15. Watch for traffic when operating near or crossing roadways.

  • Page 6: Sound Pressure Level

    Safety Never carry children. They may fall off and be Frequently check components and replace with seriously injured or interfere with safe machine manufacturer’s recommended parts, when operation. necessary. Never allow children to operate the machine. Mower blades are sharp and can cut. Wrap the blade(s) or wear gloves, and use extra caution Use extra care when approaching blind corners, when servicing them.

  • Page 7: Slope Chart

    Safety Slope Chart Read all safety instructions on pages 2–4.

  • 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 DRIVE SHAFT COVER (Part No. 98–1608) ON BATTERY STRAP (Part No.

  • Page 10: 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 11: Closing The Hood

    Check Before Operating Closing the Hood Lift up on the prop rod as you begin to lower the hood (Fig. 2). Push the hood down until the latch closes. m–3438 Figure 2 m–3318 1. Prop rod Figure 3 1. Side panel latch 2.

  • Page 12: Adding Fuel

    Check Before Operating Adding Fuel Filling the Fuel Tank Park the machine on a level surface, disengage Use UNLEADED Regular Gasoline suitable for the power take off (PTO), set the parking brake, automotive use (85 pump octane minimum). Leaded lower the attachment lift, and turn the ignition regular gasoline may be used if unleaded regular is key to “STOP”...

  • Page 13: Check The Cooling System

    Check Before Operating Check the Cooling System IMPORTANT: Do not overfill the crankcase with oil because this may result in engine damage. 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.

  • Page 14: Check For Debris

    Check Before Operating Î Î Î Î Î Î Î Î Î m–3412 Figure 7 Curved arrows show air intake and exhaust path 1. Air intake screens (2 of 3 shown) m–3423 Figure 6 1. Reserve tank cap 3. Maximum level line (cold) 2.

  • Page 15: Check The Safety Interlock System

    Check Before Operating Check the Safety Interlock IMPORTANT: It is preferable to blow dirt out (Fig. 9), rather than washing it out. If System water is used, keep it away from electrical items. Always check the interlock system before operating the tractor.

  • Page 16: Operation

    Operation Think Safety First Parking Brake Please carefully read all the safety instructions on Always set the parking brake when you stop the pages 2–7. Knowing this information could help you, machine or leave it unattended. your family, pets or bystanders avoid injury. Setting the Parking Brake Controls Push the brake pedal (Fig.

  • Page 17: Starting And Stopping The Engine

    Operation Starting and Stopping the Engine Starting Sit down on the seat. Depress the brake pedal. Note: The engine will not start unless you fully depress the brake pedal. m–3257 Figure 12 Push the PTO (power take off) switch to OFF 1.

  • Page 18: Operating The Power Take Off (Pto)

    Operation Operating the Check the Safety Interlock Power Take Off (PTO) System The power take–off (PTO) switch engages and Understanding the Safety Interlock disengages power to the electric clutch. System If the ignition key is in the RUN or LIGHTS position The safety interlock system is designed to prevent the and the power take off (PTO) is engaged, the PTO engine from starting unless:...

  • Page 19: Gauges And Indicator Lights

    Operation Battery Light Fully depress the brake pedal, set the parking brake, push the PTO switch to OFF and start the The battery light will be ON when the key is in the engine. Pull the PTO switch to ON. Rise RUN or LIGHTS positions if the battery voltage is slightly from the seat;...

  • Page 20: 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 POTENTIAL HAZARD the PTO and allow the engine to cool while Excessive speed on slopes can result in continuing to run the engine.

  • Page 21: Stopping The Machine

    Operation Stopping the Machine Re–centering the Steering Wheel To stop the machine, release the traction control pedal, step on the brake pedal, disengage the power The power steering will not always return the steering take off (PTO), lower the attachment lift, and turn the wheel to the centered position.

  • Page 22: Attachment Power Lift

    Operation Attachment Power Lift Lowering Attachments Start the tractor. The attachment power lift (Fig. 17) is used to raise and lower attachments. Push the lift lever DOWN to lower the attachment (Fig. 18). Figure 18 1. Lift lever–Up 2. Lift lever–Down m–3258 Figure 17 1.

  • Page 23: Headlights And Taillights

    Operation Headlights and Taillights Using the Cruise Control The headlights and taillights are turned on by turning The cruise control is a switch (Fig. 22) on the right the ignition key to the LIGHTS position. They can fender that maintains a set traction control position be turned on even if the engine is not running.

  • Page 24: The Smart Turn Steering Feature

    Operation Disengaging the Cruise Control While holding your foot steady on the traction control, move the cruise control switch (Fig. 11) POTENTIAL HAZARD to the “OFF” position. Excessive speed when turning can result in rollover accidents. This unlocks the traction control. You must now WHAT CAN HAPPEN use the traction control to move forward.

  • Page 25: 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 26 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 27 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 28: 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 29 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 26. Place a drip pan beneath the oil drip tray to receive oil from the oil filter and oil passages in the engine.

  • Page 30: 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 31: Spark Plugs

    Maintenance Spark Plugs Checking the Spark Plugs Look at the center of the spark plug(s) (Fig. 31). Service Interval/Specification If you see light brown or gray on the insulator, the engine is operating properly. A black coating Check the spark plugs and reset the air gap as on the insulator usually means the air cleaner is necessary.

  • Page 32: Greasing And Lubrication

    Maintenance Greasing and Lubrication Service Interval/Specification Grease the machine after every 50 operating hours or yearly, whichever occurs first. Grease more frequently when operating conditions are extremely dusty or sandy. Grease Type: General-purpose grease. m–3240 Figure 32 How to Grease Disengage the power take off (PTO), set the Open the drive shaft maintenance cover on the parking brake, lower the attachment lift, and turn...

  • Page 33: 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 35 Do not operate the tractor without the drive shaft cover in place.

  • Page 34: Brake

    Maintenance Brake Turn the brake adjustment nut (Fig. 38) until there is 2” (51 mm) of free travel. 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.

  • Page 35: Fuel Tank

    Maintenance Fuel Tank Draining The Fuel Tank POTENTIAL HAZARD In certain conditions gasoline is extremely flammable and highly explosive. m–2487 WHAT CAN HAPPEN Figure 40 A fire or explosion from gasoline can burn you, others, and cause property damage. 1. Hose clamp 3.

  • Page 36: Fuel Filter

    Maintenance Fuel Filter Front Wheel Toe-In Service Interval/Specification Service Interval/Specification Replace the fuel filter after every 100 operating Maintaining correct front wheel toe–in is important hours. for safety, Smart Turn Steering operation, and ease of use. If uneven tire wear, lawn scuffing or hard steering develop, adjustment may be required.

  • Page 37: Transaxle Fluid

    Maintenance Transaxle Fluid Service Interval/Specification Check the fluid level every 25 hours. Always keep the fluid level in the correct operating range on the dipstick when the transaxle is cold. Fluid Type: SAE 10W–30 Detergent oil (API service SG, SH or above) Checking the Fluid Level m–3397 Figure 43...
  • Page 38 Maintenance If the oil level is low, slowly pour only enough SAE 10W–30 detergent oil into the filler tube to raise the level to the FULL line. IMPORTANT: Do not fill above the FULL line as fluid may overflow. m–3322 Figure 47 1.

  • Page 39: Fuse

    Maintenance Changing the Transaxle Filter Fuse Service Interval/Specification Service Interval/Specification Replace the transaxle filter after the first 50 hours; The electrical system is protected by fuses. They then every 200 hours. require no maintenance. However, if a fuse blows, check the component and circuit for a malfunction or Drain the oil from the transaxle;...

  • Page 40: Headlights

    Maintenance Headlights Installing the Bulb The bulb has metal pins on the side of its base. Specification: Bulb # 1156 Automotive Type Align the pins with the slots in the bulb holder and insert the base into the holder (Fig. 51). Removing the Bulb Push and rotate the bulb clockwise until it stops.

  • Page 41: Taillights

    Maintenance Taillights Battery Service Interval/Specification Bulb: GE 194 Check the electrolyte level in the battery every 25 Removing the Bulb hours. Always keep the battery clean and fully charged. Use a paper towel to clean the battery case. Disengage the power take off (PTO), set the If the battery terminals are corroded, clean them with parking brake, lower the attachment lift, and turn a solution of four parts water and one part baking...
  • Page 42 Maintenance Adding Water to the Battery Open the cell covers to see into the cells. The electrolyte must be up to the lower part of the IMPORTANT: Use only distilled water. tube (Fig. 54). Do not allow the electrolyte to get below the plates.
  • Page 43 Maintenance Removing the Battery 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. Remove the tractor’s front grill by raising the hood and unscrewing the two screws and washers securing it in place (Fig.
  • Page 44 Maintenance Installing the Battery Charging the Battery Place the battery onto the chassis (Fig. 55). IMPORTANT: Always keep the battery fully charged (1.260 specific gravity). This is Secure the battery shield to the chassis with especially important to prevent battery hold–down rods.
  • Page 45 Maintenance...

  • Page 46: Wiring Diagram

    Maintenance Wiring Diagram...
  • Page 47 Maintenance Wiring Diagram...

  • Page 48: Cleaning And Storage

    Maintenance Cleaning and Storage fully charged battery maintains its charge for about 50 days at temperatures lower than 40 F (4 C). If the temperatures will be above Disengage the power take off (PTO), set the 40 F (4 C), check the water level in the parking brake, and turn the ignition key to battery and charge it every 30 days.

  • Page 49: 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 50 Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION The engine starts, but does not Misadjusted or faulty choke or Contact your Authorized keep running 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 51 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. The crankcase oil level is Fill or drain to the full mark.
  • Page 52 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. in “N.” lever to “L” or “H.” The transmission oil is low. Fill to the full “F” mark on the transmission oil dipstick when the transmission is cold.
  • Page 53 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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