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Toro 170-DH Operator's Manual
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Toro 170-DH Operator's Manual

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Form No. 3329-376
170-DH
Lawn Tractor
Model No. 74570—230000001 and Up
Operator's Manual
Original Instructions (GB)

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  • Page 1 Form No. 3329-376 170-DH Lawn Tractor Model No. 74570—230000001 and Up Operator’s Manual Original Instructions (GB)

  • Page 2: Table Of Contents

    Positioning the Seat ..... . . Dealer or Toro Customer Service and have the model and Headlights .......

  • Page 3: Safety

    Write the product model and serial numbers in the space Keep in mind that the operator or user is responsible for below: accidents or hazards occurring to other people or their property. Do not carry passengers. Model No. All drivers should seek and obtain professional and practical instruction.
  • Page 4 On multi-bladed machines, take care as rotating one – disengage the power take-off and lower the blade can cause other blades to rotate. attachments; – change into neutral and set the parking brake; Operation – stop the engine and remove the key. Do not operate the engine in a confined space where Disengage drive to attachments, stop the engine, and dangerous carbon monoxide fumes can collect.

  • Page 5: Toro Riding Mower Safety

    Toro Riding Mower Safety The following paragraph contains safety information specific to Toro products that is not included in the CEN standard. Use only Toro-approved attachments. The warranty may be voided if you use the tractor with unapproved attachments. Sound Pressure This unit has a maximum sound pressure level at the operator’s ear of 79 dBA, based on measurements of...

  • Page 7: Slope Chart

    Slope Chart...

  • Page 9: Safety And Instruction Decals

    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. 93-7276 104-2853 1. Explosion hazard—wear 3. Fire hazard—no fire, open 1.
  • Page 10 104-2903 1. Warning, tipping hazard—do not drive across slopes greater than 5 degrees, down slopes greater than 15 degrees, or up slopes greater than 10 degrees. 2. Warning—read the Operator’s Manual. 3. Thrown object hazard, mower—keep bystanders a safe distance from the machine. 4.
  • Page 11 104-3234 104-3235 1. Fast 4. Engine—stop 1. Pull the knob out to start 3. Power take-off (PTO) the PTO. 2. Continuous variable 5. Headlights setting 2. Push the knob in to stop 6. On the PTO. 3. Slow 7. Engine—start...
  • Page 12 104-3238 1. Starting procedure 6. Lock the parking brake. 2. Read the Operator’s 7. If the engine is cold, move Manual . the throttle control lever to Choke. 3. Check the engine oil level. 8. Start the engine. 4. Raise the mower. 9.

  • Page 13: Gasoline And Oil

    Gasoline and Oil Recommended Gasoline Use unleaded regular gasoline suitable for automotive use (85 pump octane minimum). You may use leaded regular gasoline if unleaded regular is not available. Important Never use methanol, gasoline containing methanol, or gasohol containing more than 10% ethanol because the fuel system could be damaged.

  • Page 14: Using Stabilizer/Conditioner

    Using Stabilizer/Conditioner Operation Use a fuel stabilizer/conditioner in the tractor to provide the Note: Determine the left and right sides of the tractor from following benefits: the normal operating position. It keeps gasoline fresh during storage for up to 90 days. For longer storage, drain the fuel tank.

  • Page 15: Positioning The Seat

    Releasing the Parking Brake Using the Blade Control (PTO) 1. Push down on the brake pedal (Fig. 2). The blade control (PTO) knob engages and disengages power to the blades. Note: The parking brake lever should release. 2. Gradually release the brake pedal. Engaging the Blades 1.

  • Page 16: Grass Collector Warning Light

    Grass Collector Warning Light Adjusting the Discharge Baffle When the grass collector needs to be emptied, the warning The discharge baffle changes the size of the discharge light comes on (Fig. 5) and a buzzer sounds. opening to assist the operation of the bag fill indicator. Important 1.

  • Page 17: Starting The Engine

    Starting the Engine 6. Shift the throttle control lever to the Slow position (Fig. 11). 1. Open the fuel shut-off valve located between the fuel tank and the engine (Fig. 9). Figure 9 1. Fuel shut-off valve Figure 11 Note: The valve handle should align with the fuel hose. 1.

  • Page 18: Using The Safety Interlock System

    Using the Safety Interlock Setting the KeyChoice Switch to Operate in Reverse System The interlock feature on the tractor prevents the power take-off (PTO) from operating when you back up the Caution tractor. If you operate the tractor in reverse with the blades (PTO) engaged (i.e., with the mower blades or other attachment running), the engine will stop.

  • Page 19: Testing The Safety Interlock System

    1. Engage the blades (PTO). 4. Shift the blade control (PTO) knob into the Disengage position, put the traction control pedal in Neutral, and 2. Insert the KeyChoice key into the switch (Fig. 12). start the engine. While the engine is running, shift the blade control (PTO) knob into the Engage position and 3.

  • Page 20: Driving The Tractor Forward Or Backward

    Note: This disengages the drive system and allows the Driving the Tractor Forward or wheels to turn freely (Fig. 14). Backward The throttle control regulates the engine speed as measured in RPM (revolutions per minute). Place the throttle control in the Fast position for best performance. To go forward: 1.

  • Page 21: Stopping The Tractor

    Stopping the Tractor 1. Release the traction control pedal or reverse speed pedal. 2. Disengage the blades (PTO). Turn the ignition key to Off. 3. Set the parking brake if you leave the tractor unattended; refer to Setting the Parking Brake on page 14.

  • Page 22: Operating Tips

    Operating Tips For the best performance, operate the engine at the maximum speed. The mower requires air to thoroughly cut grass clippings, so do not set the height-of-cut too low or completely surround the mower in uncut grass. Always leave one side of the mower free from uncut grass to allow the air to be drawn into the mower.

  • Page 23: Maintenance

    Maintenance Note: Determine the left and right sides of the tractor from the normal operating position. Recommended Maintenance Schedule Maintenance Service Maintenance Procedure Interval After first 5 hours Change the engine oil. After first 20 hours Check the blade drive belt adjustment. Check the engine oil level.

  • Page 24: Servicing The Engine Oil

    Servicing the Engine Oil Check the oil level daily or after every use. Change the oil after the first 5 operating hours and every 50 operating hours thereafter. Note: Change the oil more frequently when operating conditions are extremely dusty or sandy. Oil Type: Detergent oil (API service SF, SG, SH, SJ, or higher) m-1868...

  • Page 25: Servicing The Brake

    9. Rotate oil drain valve to allow oil to drain (Fig. 19). 1256 m-6438 Figure 20 Figure 19 1. Oil filter 3. Adapter 2. Gasket 1. Oil drain valve 2. Oil drain tube 3. Apply a thin coat of new oil to the rubber gasket on the 10.

  • Page 26: Checking The Tire Pressure

    Checking the Brake Greasing and Lubricating the Tractor 1. Park the tractor on a level surface. 2. Disengage the blades (PTO). Grease the tractor with a general-purpose grease after every 25 operating hours or once a year, whichever occurs first. 3.
  • Page 27 Where to Add Grease Figure 23 Lubrication List Item Name Quantity Interval (hours) Lubricant Front wheels—grease fittings Grease Steering ball joints Steering sector gear Grease Steering pinion gear Grease Steering shaft bearing Steering shaft bearing Motion lever—grease fitting Grease Shaft hub for lifting the mower housing Motion link ball joints Brake pedal hubs Parking brake ring...

  • Page 28: Replacing The Fuse

    Replacing the Fuse The electrical system is protected by fuses. They are located beneath the hood, near the fuel tank (Fig. 24). If a fuse goes out, check the circuit wiring for a short. 1874 Figure 25 1. Bulb holder 4.

  • Page 29: Servicing The Battery

    Servicing the Battery Check the electrolyte level in the battery before each use. Always keep the battery clean and fully charged. Use a paper towel to clean the battery and battery box. If the battery terminals are corroded, clean them with a solution of 4 parts water and 1 part baking soda.
  • Page 30 Installing the Battery Adding Water to the Battery 1. Place the battery into the chassis with the battery posts The best time to add distilled water to the battery is just toward the front of the tractor (Fig. 27). before you operate the tractor. This lets the water mix thoroughly with the electrolyte solution.

  • Page 31: Servicing The Spark Plug

    Servicing the Spark Plug Checking the Spark Plug 1. Look at the center of the spark plug (Fig. 30). If you see Check the spark plug after every 25 operating hours. Install light brown or gray on the insulator, the engine is a new Champion RC12YC or equivalent spark plug after operating properly.

  • Page 32: Draining The Fuel Tank

    Draining the Fuel Tank Note: Now is the best time to install a new fuel filter because the fuel tank is empty. Drain the fuel tank when you will not be using the tractor 10. Install the fuel line onto the fuel filter. for more than 30 days.

  • Page 33: Servicing The Air Cleaner

    Servicing the Air Cleaner Clean and oil the foam element after every 25 operating hours. Replace the paper element after every 100 operating hours or yearly, whichever occurs first. Note: Service the air cleaner more frequently if the operating conditions are extremely dusty or sandy. 1.

  • Page 34: Servicing The Blades

    Installing the Foam and Paper Elements Important To prevent engine damage, always operate the engine with the complete foam and paper air cleaner assembly installed. 1. Place the foam element and paper element inot the blower housing. Note: Ensure that the rubber seal is flat against the air cleaner base.

  • Page 35: Removing The Mower

    Sharpening the Blades 2. Position the blades 90 degrees to each other (Fig. 38). 1. Use a file to sharpen the cutting edge at both ends of each blade (Fig. 36). Maintain the original angle. The blade retains its balance if you remove the same amount of material from both cutting edges.

  • Page 36: Installing The Mower

    8. Pull the idler arm assembly in and remove the V-belt Adjusting the Blade Drive Belt from the pulley (Fig. 39). Adjust the blade drive belt after the first 20 operating hours and every 50 operating hours thereafter. 1. Remove the mower; refer to Removing the Mower on page 35.

  • Page 37: Adjusting The Height Adjustment Cable Rod Assembly

    Adjusting the Height Servicing the Grass Collector Adjustment Cable Rod Removing the Grass Collector Assembly 1. Use 2 hands to tip the grass collector forward (Fig. 42). Check the front-to-rear blade slope every 100 hours, yearly, or any time you install the mower. Before you check the slope, inflate the front and rear tires to the recommended air pressure;...

  • Page 38: Cleaning And Storing The Tractor

    9. Install the grass collector; refer to Installing the Grass Note: A fuel stabilizer/conditioner is most effective Collector on page 37. when mixed with fresh gasoline and used at all times. Note: Allow the bag to dry thoroughly before installing it. B.

  • Page 39: Troubleshooting

    Troubleshooting Problem Possible Causes Corrective Action The starter does not crank. 1. The blade control (PTO) knob 1. Move the blade control (PTO) is engaged. knob to the Disengaged position. 2. The parking brake is not on. 2. Set the parking brake. 3.
  • Page 40 Problem Possible Causes Corrective Action The engine loses power. 1. The engine load is excessive. 1. Reduce your ground speed. 2. The air cleaner is dirty. 2. Clean the air cleaner element. 3. The oil level in the crankcase is 3.

This manual is also suitable for:

74570

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