Toro 78448 Operator's Manual
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Toro 78448 Operator's Manual

Toro 78448 Operator's Manual

Wheel horse 48" side discharge mower for 5xi tractors
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FORM NO. 3319–347GB
Wheel Horse
48" Side Discharge
Mower
for 5xi Tractors
Model No. 78448 – 8900001 & Up
Operator's Manual
IMPORTANT: Read this manual, and your tractor manual, carefully. They
contain 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 78448

  • Page 1 Wheel Horse 48” Side Discharge Mower for 5xi Tractors Model No. 78448 – 8900001 & Up Operator’s Manual IMPORTANT: Read this manual, and your tractor manual, carefully. They contain information about your safety and the safety of others. Also become familiar with the controls and their proper use before you operate...
  • 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. – 1997 Printed in USA...

  • Page 3: Table Of Contents

    Contents Page Page Adjusting the Two Front Wheels ..Safety and Instruction Decals ....Check for Debris ....Installation .

  • 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. (1) ON DECK RIGHT SIDE ON GRASS DEFLECTOR (1) ON DECK LEFT SIDE (Part No.

  • Page 5: Installation

    Installation Loose Parts Note: Use the chart below to identify parts used for assembly. DESCRIPTION QTY. Discharge chute Nylon washer 3/8” Spring Rubber bushing Install grass deflector Flat washer 1/2” Lock nut 3/8” Cotter pin 3/4” PTO drive belt Install PTO drive belt Pulley box Install pulley box Operator’s Manual...

  • Page 6: Installing The Mower

    Installation Installing the Mower POTENTIAL HAZARD Initial Preparation Without the grass deflector or complete grass catcher assembly mounted in place, The mower is most easily installed when done on a you and others are exposed to blade contact level concrete surface. Rougher dirt or lawn surfaces and thrown debris.
  • Page 7 Installation m–3519 Figure 5 m–3463 1. Slots in the side mounting 3. Front–to–rear adjustment Figure 4 brackets (2) 1. Attach–A–Matic latches 5. Belt tension adjustment 2. Belt guide knob 2. Pulley box 6. Belt tension indicators 3. Idler pulley (one on each side) Start the tractor.
  • Page 8 Installation After the two J–pins are seated through the 10. Set the parking brake, lower the attachment lift, mower’s mounting brackets, using the and turn the ignition key to “STOP” to stop the attachment lift and your hand on the right front engine.
  • Page 9 Installation Remove the tractor’s front grill by raising the hood and unscrewing the two screws and washers securing it in place (Fig. 10). Close the hood and remove the grill by pulling it out toward you. m–3470 Figure 11 1. Pulley box pulley 3.

  • Page 10: Adjusting The Mower

    Installation Adjusting the Mower Adjusting the Height of Cut The rear gauge wheels are adjusted in different hole locations for 1–1/2—4–1/2” (4–11 cm) heights of cut. Start the tractor, apply the parking brake, and raise the deck. Get off the tractor. Pull the height–of–cut lever out to disengage it from the m–3458 height–of–cut plate.
  • Page 11 Installation 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. Carefully rotate one of the blades so it is facing front and rear (Fig. 15). Measure the distance from the front tip of the blade (Fig.
  • Page 12 Installation Adjusting the Deck Slope for Transport To extend PTO drive belt life and provide adequate transport height, the deck slope in transport should be POTENTIAL HAZARD adjusted. Three steps accomplish this: 1) Making The “scissor” formed by the mower sure the lift arm cams are in the same position, 2) mounting brackets and the attachment lift Measuring blade slope in its front and rear positions...

  • Page 13: Removing The Mower

    Installation Repeat steps 4–7 until the slope of the blade is Release the belt tension release arm on the approximately 1/4” (7 mm) lower in the front pulley box to release the tension on the drive belt than it is in the rear. (Fig.
  • Page 14 Installation Press the button of the mid Attach–A–Matic and twist the lever clockwise to release the mower (Fig. 21). m–3458 Figure 23 1. Front Attach–A–Matic 3. Pulley box button (one on each side) 2. Front Attach–A–Matic m–3457 latches Figure 21 1.

  • Page 15: Operation

    Operation Side Discharge it is a reminder: the implement is being powered and the starter will not crank while the PTO is engaged. Always turn off the PTO before getting off the seat. Engaging the Power Take Off (PTO) POTENTIAL HAZARD Without the grass deflector or complete Depress the brake pedal to stop the machine.

  • Page 16: Attachment Lift Lever

    Operation Attachment Lift Lever The attachment lift lever (Fig. 25 & 26) is used to raise and lower various attachments. Raising Attachments Start the tractor. Pull the attachment lift lever upward until the latch locks. In this position, the lift will hold the attachment in the up, or raised position.

  • Page 17: Adjusting The Two Front Wheels

    Operation Adjusting the Two Front Check for Debris Wheels Each time you use the mower, be sure to check for debris build up on and inside the rear transaxle cover The two front adjustable wheels must be adjusted in (Fig. 28). Remove any build up. the proper hole location for each time you change deck height-of-cut position.

  • Page 18: 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 19: Maintenance

    Maintenance Service Interval Chart Each Storage Spring Service Operation Hours Hours Hours Service Service Cutter Blade—check Mower Spindles—grease Belts—check for wear/cracks Mower Housing—clean Belt Tension—check initial 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 20: 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 Figure 29 break apart and pieces could be thrown at 1.
  • Page 21 Maintenance Sharpening the Blade(s) Installing the Blade(s) Use a file to sharpen the cutting edge at both Hold the blade end using a rag or thickly padded ends of the blade (Fig. 31). Maintain the original glove. Install the blade, flat washer, and the angle.

  • Page 22: 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 11. frequently when operating conditions are extremely Remove the pulley cover mounting screws and dusty or sandy.

  • Page 23: Washing The Underside Of The Mower

    Maintenance Washing the Underside of the Run the mower again for one to three minutes to remove excess water. Mower After each use, wash the underside of the mower to prevent grass build-up for improved mulch action and clipping dispersal. Park the tractor on a hard level surface.

  • Page 24: Storage

    Maintenance Storage Clean dirt and chaff from the top of the mower. Scrape heavy buildup of grass and dirt from the underside of the mower. Then wash the mower with a garden hose. Run the tractor for two to three minutes. Check the condition of the blade(s);...

  • Page 25: 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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