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Toro GROUNDSMASTER 30753 Operator's Manual

52” mower
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FORM NO. 3322–201
GROUNDSMASTER
52" Mower
for 120 Traction Unit
Model No. 30753 – 990001 & 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 GROUNDSMASTER 30753

  • Page 1 FORM NO. 3322–201 GROUNDSMASTER 52” Mower for 120 Traction Unit Model No. 30753 – 990001 & 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 Introduction We want you to be completely satisfied with your The warning system in this manual identifies new product, so feel free to contact your local potential hazards and has special safety messages that Authorized Service Dealer for help with service, help you and others avoid personal injury, even death.

  • Page 3: Table Of Contents

    Contents Page Page Maintenance ......Safety and Instruction Decals ....Service Interval Chart .

  • 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.

  • Page 5: Assembly

    Assembly Loose Parts Note: Use the chart below to identify parts used for assembly. DESCRIPTION QTY. Carrier frame Shim Bolt 3/8–16 x 7/8” (22 mm) Install carrier frame to traction unit Washer 3/8” (10 mm) Bolt 3/8–16 x 1-3/4” (44 mm) Locknut 3/8–16 Castor wheel assembly Thrust washer...

  • Page 6: Installing The Castor Wheels

    Assembly Installing the Castor Wheels Installing the Carrier Frame to the Traction Unit Place the (2) thrust washers onto the castor wheel fork (Fig. 1). Align the carrier frame and shim holes with the mounting holes in the traction unit frame Insert the castor wheel fork into the carrier frame (Fig.

  • Page 7: Installing The Cutting Mower

    Assembly Installing the Cutting Mower Installing the Drive Belt Position mower under the carrier frame. Release latches holding covers to the top of the mower, over gearbox pulley, and remove. Mount the mower to the carrier frame with four (4) clevis pins and hairpin cotters (Fig. 3). Install the drive belt around the jackshaft pulley, on the traction unit, and the gearbox pulley.

  • Page 8: Operation

    Operation Operating the Power Take Off (PTO) POTENTIAL HAZARD When the mower is attached to the traction The power take off (PTO) switch engages and unit, without additional weight, the traction disengages power to the electric clutch. unit may become unstable. WHAT CAN HAPPEN Engaging the PTO Loss of traction and stability may cause...

  • Page 9: Implement Lift Lever

    Operation Implement Lift Lever Adjusting Gage Wheels The implement lift lever (Fig. 6) is used to raise and The gage wheels must be adjusted in the proper hole lower various attachments. location for each height-of-cut position. After adjusting height-of-cut. raise the Raising Attachments attachment lift lever: Refer to Raising Attachments.

  • Page 10: Maintenance

    Maintenance Service Interval Chart Each Service Operation Notes Hours Hours Hours Cutting blades – check Belts – check for wear/cracks Blade spindle bearings – grease Idler arm – oil Castor wheels – grease Gearbox – check level of lubricant Mower housing – clean Chipped surfaces –...
  • Page 11 Maintenance Inspecting the Blades Checking for Bent Blades Inspect the cutting edges (Fig 8). If the edges are Rotate the blades until the ends face forward and not sharp or have nicks, remove and sharpen the backward (Fig. 9). Measure from a level surface blades.
  • Page 12 (Fig. 11). performance and continued safety conformance of the Repeat this procedure until the blade is balanced. machine, use genuine TORO replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards.

  • Page 13: Correcting Cutting Unit Mismatch

    Maintenance Correcting Cutting Unit Setting the Front-to-Rear Pitch Mismatch Check the tire pressure. Position the blades front-to-rear (Fig. 14). If one cutter blade cuts lower than the other, correct Measure at “C” and “D” locations (Fig. 14) from as follows: a level surface to the cutting edge of the blades Stop the engine, remove the key and disconnect (Fig.

  • Page 14: Setting The Side-To-Side Leveling

    Maintenance To change the front-to-rear pitch, move an equal Setting the Side-to-Side Leveling number of thrust washers on both castor wheel forks. Move the thrust washers from the top of Check the tire pressure. the carrier frame mounting tube to the bottom to raise the front of the mower.

  • Page 15: Greasing And Lubrication

    Maintenance Greasing and Lubrication Lubrication The gearbox lubrication should be checked regularly. Refer to the Service Interval Chart on page 8. Fill Greasing with SAE EP 90 gear lube. The cutting unit must be lubricated regularly. Refer to Lower lift and adjust mower so it is level, all the Service Interval Chart on page 8.

  • Page 16: Replacing The Mower Belt

    Maintenance Replacing the Mower Belt Remove nut securing spring anchor to housing and lift spring anchor from bolt (Fig. 23). Squealing when the belt is rotating, blades slipping Remove the worn mower belt (Fig. 23). when cutting grass, frayed belt edges, burn marks and cracks are signs of a worn mower belt.

  • Page 17: Replacing The Drive Belt

    Maintenance Replacing the Drive Belt Replacing the Grass Deflector Squealing when the belt is rotating, blades slipping Remove the locknuts, bolts and springs holding when cutting grass, frayed belt edges, burn marks and the deflector mounts to the pivot brackets cracks are signs of a worn drive belt.

  • Page 18: Replacing The Castor Wheel Fork Bushings

    Maintenance Replacing the Castor Wheel Insert a pin punch into the mounting tube and carefully drive out the bushings (Fig. 27). Clean Fork Bushings the inside of the mounting tube. Grease the inside and outside of the new The castor wheel forks are mounted in bushings bushings.

  • Page 19: Servicing The Castor Wheels And Bearings

    Maintenance Servicing the Castor Wheels To assemble, place one (1) bushing into the wheel hub. Grease the roller bearing and spanner and Bearings bushing and slide them into the wheel hub. Place the second bushing into the wheel hub (Fig. 28). The castor wheels rotate on a roller bearing supported Install wheel bolt, (2) washers per side, and by a spanner bushing.

  • Page 20: Storage

    Maintenance Storage Clean any dirt and chaff from the top of the mower. Scrape any heavy buildup of grass and dirt from the underside of the mower, then wash the mower with a garden hose. Check the condition of the blades. Refer to Cutting Blades on page 8.

  • Page 21: Troubleshooting

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

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