Toro 78478 Operator's Manual
Toro 78478 Operator's Manual

Toro 78478 Operator's Manual

60 in. z-master 300 series attachment

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Form No. 3325–797
60 in. Mower
Z–Master 300 Series Attachment
Model No. 78478—210000001 and Up
Operator's Manual
English (EN)

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Table of Contents
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Summary of Contents for Toro 78478

  • Page 1 Form No. 3325–797 60 in. Mower Z–Master 300 Series Attachment Model No. 78478—210000001 and Up Operator’s Manual English (EN)
  • Page 2: Table Of Contents

    Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 illustrates the location of the model and serial numbers on the product.
  • Page 3: 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. 66–6380 66–1340 68–8340 55–4300 70–2560 68–3380 94–9547 Part No. 98–1305...
  • Page 4: Assembly

    93–1122 98–1304 88–8950 94–9585 Right Side 94–9586 Left Side Assembly Note: Determine the left and right sides of the machine from the normal operating position. Loose Parts Note: Use the chart below to identify parts used for assembly. DESCRIPTION QTY. Castor Wheel Thrust Washer Install castor wheels to carrier frame...
  • Page 5: Remove Carrier Frame

    DESCRIPTION QTY. Push Arms Flat Washer 1-1/2 in. O.D. (38 mm) Install push arms to carrier frame Retaining Ring Spring Assembly Shoulder Bolt 3/8 in. x 7/8 in. (22 mm) Install springs to carrier frame Locknut 3/8 in. Shoulder Bolt 3/8 in. x 7/8 in. (22 mm) Install mower to traction unit Locknut 3/8 in.
  • Page 6: Install Castor Wheels

    Warning Without the grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris will cause injury or death. Never remove the grass deflector from the mower because the grass deflector routes material down toward the turf.
  • Page 7: Installing Lift Springs

    4. Repeat adjustment on other gage wheel(s). Figure 5 m–3197 1. Pin 3. Flat washer 1-1/2 in. Figure 7 (38 mm) 2. Push arm 1. Wheel 3. Hair pin Cotter 4. Retaining ring 2. Pin Installing Lift Springs Installing Mower 1.
  • Page 8: Removing The Mower

    Figure 9 1. Spring Assembly 3. Locknut 3/8 in. 2. Shoulder Bolt 3/8 x 7/8 in. (22 mm) Figure 11 1. Mower Hanger Bracket 3. Hairpin Cotter 5. Roll mower in front of traction unit. 2. Clevis Pin 6. Rotate PTO drive shaft so holes in universal joint align with hole in gearbox shaft and slide together (Fig.
  • Page 9: Operation

    Figure 13 Figure 15 1. Spring Assembly 3. Locknut 3/8 in. 1. Clevis 3. Pivot Pin Assembly–flat 2. Shoulder Bolt 3/8 x 7/8 in. 2. Push Arm 4. Hairpin Cotter (22 mm) 8. Remove 2 bolts (3/8 x 1-5/8 in. (41.5 mm)) and 4.
  • Page 10: Adjusting Height-Of-Cut

    Adjusting Height-of-Cut 1. After adjusting height-of-cut, raise the attachment lift lever: Refer to Raising Attachments. The height-of-cut is adjusted from 1 to 5 in. 2. Remove hairpin cotter and pin to change hole location (25 to 127 mm) in 1/2 in. (13 mm) increments by relocating (Fig.
  • Page 11: Maintenance

    m–3276 Figure 21 1. Mower up 2. Lift handles Figure 20 1. Parking brake 3. Latch pin 2. PTO cover 4. Notch–open To Lower Mower 3. Standing in front of the mower, lift up and push 1. Pull out latch pins and rotate into notch to hold in the rearward on front handles to raise mower (Fig.
  • Page 12: Cutting Blade Service

    Cutting Blade Service Checking for Bent Blades 1. Rotate the blades until the ends face forward and To ensure a superior quality of cut, keep the blades sharp. backward (Fig. 23). Measure from a level surface to the For convenient sharpening and replacement, you may want cutting edge of the blades (Fig.
  • Page 13: Correcting Cutting Unit Mismatch

    TORO replacement blades. Installing the Blades Replacement blades made by other manufacturers may 1. Install a washer, spindle cover and blade onto the result in non-conformance with safety standards. spindle shaft (Fig. 25). Hold the blade end using a rag or thickly-padded glove.
  • Page 14: Setting The Side-To-Side Leveling

    m–1078 m–1078 Figure 28 Figure 30 m–2539 m–2550 Figure 29 Figure 31 4. To change the front-to-rear pitch, remove the retaining 4. To change the side-to-side leveling, remove the ring and move an equal number of thrust washers on retaining ring and move the thrust washers on one both castor wheel forks.
  • Page 15: Replacing The Deck Belt

    5. Remove plug on the side of the gearbox and check the level of lubrication in the gearbox. If level is low, add SAE EP-80\90 wt. gear oil until level is up to side plug in gearbox. (Fig. 35). Figure 32 1.
  • Page 16: Replacing Blade Spindle And Bearings

    2. Remove the deck belt: refer to Replacing the Deck Belt, page 15. 3. Remove blade bolt, washers, blade and spindle cup (Fig. 38). 4. Remove locknut retaining spindle pulley on spindle shaft (Fig. 38). 5. Remove bolts securing spindle housing to mower (Fig.
  • Page 17: Replacing The Castor Wheel Fork Bushings

    Figure 38 1. Locknut 6. Housing bolts 2. Pulley 7. Spindle cup 3. Bearing 8. Washer Figure 39 4. Spindle Shaft 9. Blade 5. Spindle Housing 10. Blade bolt 1. Retaining ring 3. Carrier Frame Mounting Tube 2. Thrust Washer (4) 4.
  • Page 18: Servicing The Castor Wheels And Bearings

    Figure 40 1. Grease fitting 2. Bushing Figure 41 Servicing the Castor Wheels 1. Locknut 5. Spanner Bushing and Bearings 2. Wheel Bolt 6. Roller Bearing 3. Washer 7. Grease fitting The castor wheels rotate on a roller bearing supported by a 4.
  • Page 19: Replacing The Grass Deflector

    4. Insert a pin punch into the push arm and carefully drive out the bushings (Fig. 43). Clean the inside of the push arm. 5. Use a hammer and flat plate to carefully drive new bushings into the end of push arm (Fig. 43). 6.
  • Page 20: Troubleshooting

    Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION Abnormal vibration. 1. Cutting blade(s) is/are bent or 1. Install new cutting blade(s). unbalanced. 2. Blade mounting bolt is loose. 2. Tighten blade mounting bolt. 3. Drive shaft bolts are loose. 3. Tighten drive shaft bolts. 4.

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