Toro 78231 Operator's Manual
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Toro 78231 Operator's Manual

Toro 78231 Operator's Manual

Wheel horse 42" mower for lawn and garden tractors
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FORM NO. 3319–559 Rev A
Wheel Horse
42" Mower
for
Lawn and Garden Tractors
Model No. 78231 – 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 78231

  • Page 1 Wheel Horse 42” Mower Lawn and Garden Tractors Model No. 78231 – 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...
  • Page 2 Introduction 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, We want you to be completely satisfied with your new WARNING and CAUTION are signal words used to product, so feel free to contact your local Authorized identify the level of hazard.

  • Page 3: Table Of Contents

    Contents Page Attachment Lift Lever ..... Attachment Power Lift ..... Page Adjusting Dial-A-Height .

  • Page 4: 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 GRASS DEFLECTOR ON MOWER LEFT AND (Part No. 93–1122) RIGHT SIDES (Part No.

  • Page 5: Assembly

    Assembly Loose Parts Note: Use the chart below to identify parts used for assembly. DESCRIPTION QTY. Grass deflector Torsion spring Washer (1/2”) Cotter pin (3/4”) Install grass deflector Plastic washer Rubber bushing Jam nut (3/8”–16) Rear link Washer (1/2”) Install rear link Cotter pin (1”) Hairpin cotter (2–9/16”) Adjustable link...
  • Page 6 Assembly Installing Grass Deflector 1. Locate items shown in Fig. 1. POTENTIAL HAZARD 2. Place the short end of the spring into the small hole in Without the grass deflector, discharge cover, or the grass deflector. complete grass catcher assembly mounted in 3.

  • Page 7: Installing The Mower

    Assembly Installing the Rear and Adjustable Links 1. Install a hairpin cotter (2–9/16 in.) into the inside hole of the rear link (Fig. 2). 2. Install the rear link into the gage wheel support and secure with a washer (1/2 in.) and cotter pin (1 in.) (Fig.
  • Page 8 Assembly Figure 6 1234a Figure 4 Top View 1. Lift arm 4. Rear link 1. Mower belt 2. Engine pulley 2. Washer 3/4” 5. Attachment lift 3. Hair pin cotter 3–3/8” Note: Ensure that the belt is properly located in the engine, mower, and idler pulleys.

  • Page 9: Transport Height Adjustment

    Assembly Transport Height Adjustment Side-to-Side Mower Leveling Transport height is set at the factory and should not need The mower blades must be level from side to side. Check adjustment; however if the belt covers contact the footrest the side-to-side level any time you install the mower or in the raised position, adjustment is required.

  • Page 10: Front-To-Rear Blade Slope

    Assembly Front-to-Rear Blade Slope Check the front-to-rear blade slope any time you install the mower. Before checking the slope, set air pressure in the front and rear tires to 12 psi (.85 kPa). If the front blade tip is not 0–3/8” (0–9.5 mm) lower than the rear blade tip, adjust the blade slope using the following instructions: 1.

  • Page 11: Removing The Mower

    Assembly Removing the Mower 1. Park the tractor on a flat surface, disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 2. Raise attachment lift, turn Dial-a-Height knob counterclockwise, all the way, and lower the attachment lift lever to the mounting position;...
  • Page 12 Assembly 1234a Figure 13 1. Lift arm 4. Rear link 2. Washer 3/4” 5. Attachment lift 3. Hair pin cotter 3–9/16” 8. Turn the front wheels fully to the left and raise attachment lift lever all the way to the latched position;...

  • Page 13: Operation

    Operation Operating the Power Take Off (PTO) The power take off (PTO) engages and disengages power Side Discharge to the electric clutch. While the ignition key is in the “RUN” or “LIGHTS” positions and the power take off (PTO) is engaged “ON“, the PTO light, in the Indicator Module, will be “ON“.

  • Page 14: Attachment Lift Lever

    Operation Attachment Lift Lever Attachment Power Lift The attachment lift lever (on some models) (Fig. 16) is The attachment power lift (on some models) (Fig. 17) is used to raise and lower various attachments. used to raise and lower attachments. Raising Attachments Raising Attachments 1.

  • Page 15: Adjusting Dial-A-Height

    Operation Adjusting Dial-A-Height Adjusting Anti-Scalp Rollers The Dial-A-Height control (Fig. 16) is used to limit the The anti-scalp rollers guide the mower over uneven turf downward travel of the attachment. The Dial-A-Height without scalping the lawn. For most cutting conditions knob is rotated to change the location of this stop, up or they should be located in the lower hole.

  • Page 16: Tips For Mowing Grass

    Operation Tips for Mowing Grass When Stopping If the machine’s forward motion must be stopped while Fast Throttle Setting mowing, a clump of grass clippings may drop onto your lawn. To avoid this: For best mowing and maximum air circulation, operate the engine at “FAST.”...

  • Page 17: Maintenance

    Maintenance Service Interval Chart Each Storage Hours Hours Hours Service Service Operation Notes Cutter Blade—check Grease–Mower deck Belts—check for wear/cracks Mower Housing—clean Chipped Surfaces—paint Tires—check pressure 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.

  • Page 18: Cutting Blade

    Maintenance Cutting Blade Removing the Blade 1. Remove the mower; refer to Removing the Mower, To ensure a superior quality of cut, keep the blade(s) page 9. sharp. For convenient sharpening and replacement, you may want to have an extra blade(s). 2.
  • Page 19 Maintenance Sharpening the Blade(s) Installing the Blade(s) 1. Use a file to sharpen the cutting edge at both ends of 1. Install the washer, blade, flat washer, and the blade nut the blade (Fig. 21). Maintain the original angle. The (Fig.

  • Page 20: Greasing And Lubrication

    Maintenance Greasing and Lubrication Blade Drive Belt Service Interval/Specification Removing the Blade Drive Belt Grease the machine after every 50 operating hours or once 1. Remove the mower; refer to Removing the Mower, a year, whichever occurs first. Grease more frequently page 9.

  • Page 21: Storage

    Maintenance Storage 1. Clean dirt and chaff from the outside of the engine’s cylinder head fins and blower housing. Also remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine, shrouding, and the top of the mower. Important You can wash the machine with mild detergent and water.

  • Page 22: Troubleshooting

    Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION Abnormal vibration. 1. Cutting blade(s) is bent or 1. Install new cutting blade(s). unbalanced. 2. Blade mounting bolt is loose. 2. Tighten blade mounting bolt. 3. Engine mounting bolts are 3. Tighten engine mounting bolts. loose.

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