Toro Wheel Horse 78350 Operator's Manual
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Toro Wheel Horse 78350 Operator's Manual

Toro Wheel Horse 78350 Operator's Manual

42” rear discharge mower for classic garden tractors
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FORM NO. 3318–948 Rev. A
Wheel Horse
42" Rear Discharge
Mower
for
Classic Garden Tractors
Model No. 78350 – 7900001 & 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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  • Page 1 FORM NO. 3318–948 Rev. A Wheel Horse 42” Rear Discharge Mower Classic Garden Tractors Model No. 78350 – 7900001 & 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 1. Model and Serial Number Plate For your convenience, write the product model and serial numbers in the space below. Model No: Serial No. The TORO Co. – 1996 Printed in USA...

  • Page 3: Table Of Contents

    Contents Page Page Attachment Power Lift ....Safety and Instruction Decals ....Adjusting Height-of-Cut .

  • 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 MOWER LEFT AND ON LEFT AND RIGHT RIGHT SIDES REAR OF MOWER (Part No.

  • Page 5: Assembly

    Assembly Loose Parts Note: Use the chart below to identify parts used for assembly. DESCRIPTION QTY. Height-of-cut lever Install height-of-cut lever Spring V belt Idler assembly Install mower to tractor Belt cover Locknut Operator’s Manual Read before operating Attach Height-of-Cut Lever Attach Adjustable Link Loosen nuts securing quadrant to mower(Fig.

  • Page 6: Installing The Mower

    Assembly Installing the Mower Slide the mower under the chassis from the right side and align attachment lift with slot in center lever bar (Fig. 4). Park the machine on a level surface, disengage the power take off (PTO), set the parking brake, Straighten the front wheels, turn Dial-A-Height and turn the ignition key to “OFF”...
  • Page 7 Assembly Rotate front mounting shaft so fork faces up and 10. Remove hairpin cotters from trunnion and align so spacers are between mid-mount hitch bottom of yoke (Fig. 7). plates (Fig. 5). 11. Unlatch and remove locking clevis pin that Lift mower with attachment lift and guide fork secures yoke assembly to clutch shaft.

  • Page 8: Front-To-Rear Blade Slope

    Assembly 16. Check that spacer is on shaft and install belt Front-to-Rear Blade Slope cover with rod in hole. Secure with locknut (Fig. 9). Check the front-to-rear blade slope any time you install the mower. Before checking the slope, set air 17.

  • Page 9: Transport Height Adjustment

    Assembly To adjust front-to rear blade slope turn locknut Transport Height Adjustment on rear adjustable link (Fig. 11). Transport height is adjusted to stabilize the mower in Note: To raise the front of the mower, turn the up, locked position. locknut clockwise, to lower front turn counterclockwise.

  • Page 10: Removing The Mower

    Assembly Removing the Mower Remove hairpin cotters from trunnion and bottom of yoke (Fig. 15). Park the machine on a level surface, disengage Unlatch and remove locking clevis pin that the power take off (PTO), set the parking brake, secures yoke assembly to clutch shaft. Pivot and turn the ignition key to “OFF”...
  • Page 11 Assembly 10. Open mid-mount hitch lock handle. Lower mower with attachment lift and remove front mounting shaft (Fig. 17). m–2825 Figure 17 1. Mid-mount hitch 2. Front mounting shaft 11. Remove hairpin cotter and washer from attachment lift pin from slot in center lever bar (Fig.

  • Page 12: Operation

    Operation Operating the Attachment Lift Lever Power Take Off (PTO) The attachment lift lever (Fig. 20) is used to raise and lower various attachments. The power take off (PTO) engages and disengages power to the clutch. Raising Attachments While the ignition key is in “RUN” position and the power take off (PTO) is engaged, the PTO light in the Depress the clutch and brake pedals to stop the Indicator Module, will be “ON”.

  • Page 13: Attachment Power Lift

    Operation Attachment Power Lift Adjusting Height-of-Cut The attachment power lift (Fig. 21) is used to raise The rear gauge wheels are adjusted in different hole and lower attachments. location for 1-1/2–3-1/2” (4–9 cm) height-of-cut. Pull height-of-cut lever out to disengage from Raising Attachments quadrant.

  • Page 14: Tips For Mowing Grass

    Operation Tips for Mowing Grass Ground Speed To improve cut quality, use slower ground speed. Fast Throttle Setting For best mowing and maximum air circulation, Avoid Cutting Too Low operate the engine at “FAST.” Air is required to thoroughly cut grass clippings, so do not set the If the cutting width of the mower is wider than the height-of-cut so low, as to totally surround the mower mower you previously used, raise the cutting height...

  • Page 15: Maintenance

    Maintenance Service Interval Chart Each Storage Spring Service Operation Notes Hours Hours Service Service Cutter Blade—check Grease–Mower spindles, wheels Belts—check for wear/cracks Mower Housing—clean Chipped Surfaces—paint 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 16: Cutting Blade

    Maintenance Cutting Blade To assure a superior quality of cut, keep the blade(s) sharp. For convenient sharpening and replacement, you may want to have an extra blade(s). POTENTIAL HAZARD A blade that is worn or damaged could break apart and pieces could be thrown at bystanders or at you as you use the mower.
  • Page 17 Maintenance Sharpening the Blade(s) Installing the Blade(s) Use a file to sharpen the cutting edge at both Install the washer, blade, flat washer, and the ends of the blade (Fig. 25). Maintain the original blade nut (Fig. 27). angle. The blade retains its balance if the same IMPORTANT: The curved part of the blade amount of material is removed from both cutting must be pointing toward the inside of the...

  • Page 18: Greasing And Lubrication

    Maintenance Greasing and Lubrication Blade Drive Belt Service Interval/Specification Removing the Blade Drive Belt Grease the mower after every 25 operating hours or Remove the mower; refer to Removing the once a year, whichever occurs first. Grease more Mower, page 8. frequently when operating conditions are extremely Remove pulley cover mounting screws and dusty or sandy.

  • Page 19: Power Take Off (Pto) Belt

    Maintenance Power Take Off (PTO) Belt Unlatch and remove locking clevis pin that secures yoke assembly to clutch shaft. Pivot yoke out and forward to remove from clutch Remove the two wing nuts and belt cover from shaft and engagement plate (Fig. 32). the tractor (Fig.

  • Page 20: Storage

    Maintenance Route belt around V and flat pulleys and loop Storage over center mower spindle, top pulley.(Fig.33). Clean dirt and chaff from the outside of the Check that spacer is on shaft and install belt engine’s cylinder head fins and blower housing. cover with rod in hole.

  • Page 21: Troubleshooting

    Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION Abnormal vibration. Cutting blade(s) is bent or Install new cutting blade(s). unbalanced. Blade mounting bolt is loose. Tighten blade mounting bolt. Engine mounting bolts are Tighten engine mounting loose. bolts. Loose engine pulley, idler Tighten the appropriate pulley, or blade pulley.

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