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Toro 74925 Operator's Manual
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Toro 74925 Operator's Manual

Riding mower with a 52in, 60in or 72in turbo force side discharge mower
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Form No. 3364-253 Rev C
Z Master
®
G3 Riding Mower
with a 52in, 60in or 72in TURBO FORCE
®
Side Discharge Mower
Model No. 74923—Serial No. 310000001 and Up
Model No. 74925—Serial No. 310000001 and Up
Model No. 74927—Serial No. 310000001 and Up
Model No. 74935—Serial No. 310000001 and Up
Model No. 74937—Serial No. 310000001 and Up
G008971
To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com.
Original Instructions (EN)

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  • Page 1 Model No. 74927—Serial No. 310000001 and Up Model No. 74935—Serial No. 310000001 and Up Model No. 74937—Serial No. 310000001 and Up G008971 To register your product or download an Operator's Manual or Parts Catalog at no charge, go to www.Toro.com. Original Instructions (EN)
  • Page 2 If you require a spark arrestor, contact your Authorized Toro Dealer. Genuine Toro spark arresters are approved by the USDA Forestry Service. Note: It is a violation of California Public Resource...

  • Page 3: Table Of Contents

    Safe Operating Practices ........4 Checking the Rollover Protection System Slope Indicator............. 6 (ROPS) Knobs ..........41 Safety and Instructional Decals ......7 Adjusting the Tracking........42 Product Overview ............11 Checking the Tire Pressure ......... 42 Controls ............. 11 Checking the Wheel Hub Slotted Nut....

  • Page 4: Safe Operating Practices

    Safety • Use extra care when handling gasoline and other fuels. They are flammable and vapors are explosive. Improper use or maintenance by the operator or owner – Use only an approved container can result in injury. To reduce the potential for injury, –...
  • Page 5 • Be certain that the seat belt can be released quickly • Use only Toro approved attachments. Warranty may in the event of an emergency. be voided if used with unapproved attachments.

  • Page 6: Slope Indicator

    Slope Indicator G011841 Figure 3 This page may be copied for personal use. 1. The maximum slope you can safely operate the machine on is 15 degrees. Use the slope chart to determine the degree of slope of hills before operating. Do not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope.

  • Page 7: Safety And Instructional Decals

    Safety and Instructional 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. 68-8340 1-403005 98-5954 103-2076 54-9220 58-6520 1. Grease 105-7798 66-1340...
  • Page 8 109-7929 110-2067 107-2102 110-2068 1. Read the Operator's Manual. 114-4466 1. Main, 25A 3. Charge, 25A 2. PTO, 10A 4. Auxiliary, 15A 109-7232...
  • Page 9 115-7445 114-9834 1. Grease pulleys and spindles 1. Power Take-off (PTO) 4. Continuous variable 2. Maintenance interval—50 hours setting 2. Choke 5. Slow 3. Fast 116-1716 1. Fuel 6. Hour meter 2. Empty 7. PTO 116-0090 3. Half 8. Parking brake 4.
  • Page 10 Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystandersa safe distance from the battery. 2. No fire, open flame, or 7. Wear eye protection; 116-0205 smoking. explosive gases can cause blindness and other injuries 3.

  • Page 11: Product Overview

    Product Overview Use these times for scheduling regular maintenance (Figure 6). Fuel Gauge The fuel gauge is located with the hour meter and the bars light up when the ignition switch is on (Figure 6). The indicator light appears when the fuel level is low (approximately one gallon remaining in the fuel tank).

  • Page 12: Specifications

    Contact your Authorized Service Dealer or Distributor or go to www.Toro.com for a list of all approved attachments and accessories. Specifications Note: Specifications and design are subject to change without notice.

  • Page 13: Operation

    Operation Length: 48 inch Deck 52 inch Deck Note: Determine the left and right sides of the Roll Bar - Up 79.2 inches (201.2 79.2 inches (201.2 machine from the normal operating position. Roll Bar - Down 80.9 inches (205.5 80.9 inches (205.5 Adding Fuel 60 inch Deck...
  • Page 14 Note: A fuel stabilizer/conditioner is most effective DANGER when mixed with fresh gasoline. To minimize the In certain conditions during fueling, static chance of varnish deposits in the fuel system, use fuel electricity can be released causing a spark which stabilizer at all times.

  • Page 15: Checking The Engine Oil Level

    Checking the Engine Oil Level Before you start the engine and use the machine, check the oil level in the engine crankcase; refer to Checking the Engine Oil Level. Breaking In a New Machine New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine.

  • Page 16: Operating The Parking Brake

    DANGER CAUTION Operating on wet grass or steep slopes can cause This machine produces sound levels in excess of sliding and loss of control. 85 dBA at the operators ear and can cause hearing loss through extended periods of exposure. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or Wear hearing protection when operating this...

  • Page 17: Operating The Mower Blade Control Switch (Pto)

    Disengaging the Blade Control Switch (PTO) G009174 Figure 14 Operating the Throttle G008944 Figure 12 The throttle control can be moved between Fast and Slow positions (Figure 15). Always use the fast position when turning on the mower deck with the blade control switch (PTO). Operating the Mower Blade Control Switch (PTO) The blade control switch (PTO) starts and stops the...

  • Page 18: Operating The Ignition Switch

    Close the fuel shut-off valve for transport, maintenance, and storage. Ensure the fuel shut-off valve is open when starting the engine. G008959 G008948 Figure 16 Figure 18 1. On 2. Off 1. On 2. Off Operating the Ignition Switch Starting and Stopping the 1.
  • Page 19 Stopping the Engine CAUTION Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended. Always remove the ignition key and set the parking brake when leaving the machine unattended, even if just for a few minutes. Let the engine idle at slow throttle (turtle) for 60 seconds before turning the ignition switch off.

  • Page 20: The Safety Interlock System

    The Safety Interlock System operate as described below, have an Authorized Service Dealer repair the safety system immediately. CAUTION 1. Sitting on the seat, engage the parking brake and move the blade control switch (PTO) to on. Try If safety interlock switches are disconnected or starting the engine;...
  • Page 21 Using the Motion Control Levers G008952 Figure 24 Figure 23 Driving Backward 1. Motion control 4. Backward 1. Move the levers to the center, unlocked position. lever-neutral lock position 2. To go backward, slowly pull the motion control 2. Center, unlocked position 5.

  • Page 22: Stopping The Machine

    Stopping the Machine To stop the machine, move the traction control levers to neutral and move to locked position, disengage the power take off (blade control switch (PTO), and turn the ignition key to off. Set the parking brake when you leave the machine; refer to Setting the Parking Brake in Operation.

  • Page 23: Adjusting The Anti-Scalp Rollers

    Adjusting the Height-of-Cut Pin The height-of-cut is adjusted from 1 to 5-1/2 inches (25 to 140 mm) in 1/4 inch (6 mm) increments by relocating the clevis pin into different hole locations. 1. Move the transport lock to the lock position. 2.

  • Page 24: Adjusting The Flow Baffle Cam Locks

    Adjusting the Flow Baffle Cam Position A Locks This is the full rear position. The suggested use for this position is a follows. This procedure is applicable only to machines with • Use for short, light grass mowing conditions. the flow baffle locks. Certain models will have nuts and bolts in-place of the flow baffle locks and can be •...

  • Page 25: Positioning The Seat

    Unlatching the Seat • Allows increased ground speed in heavy conditions. • This position is similar to the benefits of the Toro SFS mower. Figure 36 1. Seat latch 2. Seat Using the Drive Wheel Release Valves Figure 34 WARNING...

  • Page 26: Using The Side Discharge

    Transporting Machines Use a heavy-duty trailer or truck to transport the machine. Ensure that the trailer or truck has all necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you, your family, pets or bystanders avoid injury.

  • Page 27: Loading Machines

    Loading Machines Use extreme caution when loading units on trailers or trucks. One full width ramp that is wide enough to extend beyond the rear tires is recommended instead of individual ramps for each side of the unit (Figure 39). The lower rear section of the tractor frame extends back between the rear wheels and serves as a stop for tipping backward.
  • Page 28 If a blade is damaged or worn, replace it immediately with Mow at Correct Intervals a genuine TORO replacement blade. Normally, mow every four days. But remember, grass grows at different rates at different times. So to maintain the same cutting height, which is a good practice, mow more often in early spring.

  • Page 29: Maintenance

    • Check the torque for wheel lug nuts. Every 500 hours • Adjust the caster pivot bearing. • Check the park brake adjustment. • Change the hydraulic filters and hydraulic oil when using Toro® HYPR-OIL™ 500 hydraulic oil. • Check the battery. Monthly •...

  • Page 30: Lubrication

    CAUTION If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the ignition before you do any maintenance. Lubrication Greasing and Lubrication Grease more frequently when operating conditions are extremely dusty or sandy.

  • Page 31: Lubricate Caster Wheel Hubs

    2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Grease the mower deck idler pulley pivot until grease come out the bottom (Figure 41). 4. Grease the three spindle bearings until grease comes out the lower seals (Figure 41).

  • Page 32: Engine Maintenance

    Engine Maintenance adhesive to one spacer nut and thread onto the axle with the wrench flats facing outward. Do Not thread spacer nut all of the way onto the end of the axle. WARNING Leave approximately 1/8 inch (3 mm) from the outer surface of the spacer nut to the end of the axle inside Contact with hot surfaces may cause personal the nut.

  • Page 33: Servicing The Engine Oil

    Servicing the Engine Oil Note: There are different oil capacities for the 23hp, 27hp, 29hp, and 34hp engines. Ensure the correct capacity is used. Oil Type: Detergent oil (API service SG, SH, SJ, or SL) Oil Capacity for 23hp Engines: with a filter change, 58 ounces (1.7 L);...
  • Page 34 Changing the Engine Oil 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking Service Interval: After the first 8 hours brake. Every 100 hours (more often in dirty 2. Stop the engine, remove the key, and wait for all or dusty conditions) moving parts to stop before leaving the operating position (Figure 47).
  • Page 35 5. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 49). G008804 G008796 Figure 49 6. Start the engine and drive to a flat area. Check the oil level again.

  • Page 36: Servicing The Spark Plug

    Servicing the Spark Plug Service Interval: Every 100 hours Make sure the air gap between the center and side electrodes is correct before installing the spark plug. Use a spark plug wrench for removing and installing the spark plug(s) and a gapping tool/feeler gauge to check and adjust the air gap.

  • Page 37: Check Spark Arrester (If Equipped)

    Checking the Spark Plug Check Spark Arrester (if equipped) Important: Never clean the spark plug(s). Always replace the spark plug(s) when it has: a black Service Interval: Every 50 hours coating, worn electrodes, an oily film, or cracks. If you see light brown or gray on the insulator, the WARNING engine is operating properly.

  • Page 38: Fuel System Maintenance

    Fuel System Note: It is important to reinstall the fuel line hoses and secure with plastic ties the same as they were originally Maintenance installed at the factory to keep the fuel line away from components that could cause fuel line damage. Replacing the Fuel Filter Servicing the Fuel Tank Service Interval: Every 500 hours/Yearly (whichever...

  • Page 39: Electrical System Maintenance

    Electrical System WARNING Maintenance Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in Servicing the Battery personal injury. • Always Disconnect the negative (black) battery Service Interval: Monthly cable before disconnecting the positive (red) cable.
  • Page 40 Important: Always keep the battery fully charged (1.265 specific gravity). This is especially important to prevent battery damage when the temperature is below 32°F (0°C). 1. Charge battery for 10 to 15 minutes at 25 to 30 amps or 30 minutes at 10 amps. G008804 2.

  • Page 41: Servicing The Fuses

    Servicing the Fuses Drive System Maintenance The electrical system is protected by fuses. It requires no maintenance, however, if a fuse blows check the component/circuit for a malfunction or short. Checking the Seat Belt 1. The fuses are located on right hand console next to the seat (Figure 58).

  • Page 42: Adjusting The Tracking

    7. If it tracks to the left, loosen the bolts and adjust the right stop plate rearward on the right T-slot until the machine tracks straight (Figure 60). 8. Tighten the stop plate (Figure 60). Figure 60 Left control lever shown Figure 59 1.

  • Page 43: Checking The Wheel Hub Slotted Nut

    Figure 63 1. 0.1 inch max 2. No more than two threads Figure 61 (0.1 inch max) should be showing here. Checking the Wheel Hub 4. If more than two threads (0.1 inch) are showing remove nut and install washer between hub and Slotted Nut nut.

  • Page 44: Using The Clutch Shim

    2. Using an air compressor, blow out any debris from under the brake pole and around the brake spacers. Figure 66 3. Check the condition of the wire harness leads, Figure 64 connectors, and terminals. Clean or repair as 1. Spring Washers 3.
  • Page 45 • If the gap is less than 0.010 inch, then reinstall the shim and reference the Troubleshooting section. • If the gap is sufficient, proceed to the safety check in step F. F. Perform the following safety check: a. Sit on the seat and start the engine. b.

  • Page 46: Cooling System Maintenance

    Cooling System Maintenance Cleaning the Engine Screen and Engine Oil Cooler Service Interval: Before each use or daily Remove any build-up of grass, dirt or other debris from the oil cooler (Figure 71). G008804 Figure 72 1. Engine guard 4. Fan housing 2.

  • Page 47: Brake Maintenance

    Brake Maintenance Adjusting the Parking Brake Service Interval: After the first 100 hours Every 500 hours DANGER Mechanical or hydraulic jacks may fail to support machine and cause a serious injury. • Use jack stand when supporting machine. • Do not use hydraulic jacks. Check to make sure the brake is adjusted properly.

  • Page 48: Belt Maintenance

    Belt Maintenance 15. Close the drive wheel release valve. Refer to Using the Drive Wheel Valves in Operation. 16. Repeat on the opposite side of the machine. Inspecting the Belts 17. Install the rear tires and torque the lug nuts to 90-95 Service Interval: Every 50 hours ft-lb (122-129 N-m).

  • Page 49: Replacing The Hydraulic Pump Drive Belt

    Figure 77 1. Position the belt cover 3. Ensure the tab is under the metal catch 2. Slide belt cover under the side catches Replacing the Hydraulic Pump Figure 76 Drive Belt 1. Clutch pulley 5. Square hole in the idler arm for the ratchet 1.

  • Page 50: Controls System Maintenance

    Controls System Maintenance Adjusting the Control Handle Position There are two height positions for the control levers; high and low. Remove the bolts to adjust the height for the operator. 1. Disengage the PTO, move the motion control levers to the neutral locked position, and set the parking brake.

  • Page 51: Adjusting The Motion Control Linkage

    not have to be in the seat because of the jumper wire being used. Run engine at full throttle and release brake. 6. Run the unit at least 5 minutes with the drive levers at full forward speed to bring hydraulic oil up to operating temperature.

  • Page 52: Adjusting The Motion Control Damper

    Adjusting the Motion Control Damper The top damper mounting bolt can be adjusted to obtain a more desired motion control lever resistance. See Figure 82 for mounting options. Figure 83 1. Flanged nut 2. Jam nut Figure 82 RH Motion Control Shown 1.

  • Page 53: Hydraulic System Maintenance

    Hydraulic System Maintenance Servicing the Hydraulic System Hydraulic Oil Type: Toro ® HYPR-OIL ™ ® hydraulic oil or Mobil 1 15W-50. Important: Use oil specified. Other fluids could cause system damage. Each Hydraulic System Oil Capacity: 52 ounces (1.5 l) per side with filter change Checking the Hydraulic Oil Service Interval: Every 50 hours—Check the hydraulic...
  • Page 54 1 15W-50 oil. Every 500 hours—Change the hydraulic filters and hydraulic oil ® ™ when using Toro HYPR-OIL hydraulic oil. To replace the hydraulic oil, the filters need to be removed. Replace both at the same time. 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake.

  • Page 55: Mower Deck Maintenance

    Mower Deck Maintenance Leveling the Mower Deck Setting Up the Machine Note: Ensure the mower deck is leveled before matching the height-of-cut (HOC). 1. Position mower on a flat surface. 2. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position Figure 87 and set the parking brake.
  • Page 56 13. If the deck is too low, tighten the single point adjustment bolt by rotating it clockwise. If the deck is too high, loosen the single point adjustment bolt by rotating it counterclockwise (Figure 91). Note: Loosen or tighten the single point adjustment bolt enough to move the height-of-cut plate mounting bolts at least 1/3 the length of the available travel in their slots.

  • Page 57: Servicing The Cutting Blades

    (Figure 93). Measure from a level surface blades as necessary. If a blade is damaged or worn, to the cutting edge, position A, of the blades replace it immediately with a genuine Toro replacement (Figure 93). Note this dimension. blade. For convenient sharpening and replacement, you may want to keep extra blades on hand.
  • Page 58 Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards. 1. Hold the blade end using a rag or thickly-padded glove. Figure 95 2. Remove the blade bolt, curved washer, and blade 1.

  • Page 59: Removing The Mower Deck

    Installing the Blades Removing the Mower Deck 1. Install the blade onto the spindle shaft (Figure 97). Before servicing or removing the mower deck, the spring loaded deck arms must be locked out. Important: The curved part of the blade must be pointing upward toward the inside of the WARNING mower to ensure proper cutting.

  • Page 60: Replacing The Grass Deflector

    Figure 99 1. Right stabilizer Figure 98 2. Deck strut (right side shown) 1. Clutch pulley 5. Square hole in the idler 3. Remove the rear deck lift attachment shoulder bolt and nut. arm for the ratchet 4. Remove the front deck lift attachment shoulder bolt and nut. 2.

  • Page 61: Cleaning

    Cleaning Cleaning Under the Mower Service Interval: Before each use or daily 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

  • Page 62: Storage

    Storage B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). Cleaning and Storage C. Stop the engine, allow it to cool, and drain the fuel tank; refer to Servicing the Fuel Tank in the 1. Disengage the power take off (blade control switch Maintenance Section.

  • Page 63: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action Starter does not crank 1. Blade control switch (PTO) is engaged. 1. Move blade control switch (PTO) to disengaged. 2. Parking brake is not on. 2. Set the parking brake. 3. Drive levers are not in neutral lock 3.
  • Page 64 Problem Possible Cause Corrective Action Machine does not drive. 1. By pass valves is not closed tight. 1. Tighten the by pass valves. 2. Pump belt is worn, loose or broken. 2. Change the belt. 3. Pump belt is off a pulley. 3.

  • Page 65: Schematics

    Schematics Wire Diagram (Rev. A)
  • Page 66 Notes:...
  • Page 67 Notes:...
  • Page 68 Countries Other than the United States or Canada Customers who have purchased Toro products outside the United States or Canada should contact their Toro Distributor (Dealer) to obtain guarantee policies for your country, province, or state. If for any reason you are dissatisfied with your Distributor's service or have difficulty obtaining guarantee information, contact the Toro importer.

This manual is also suitable for:

74923Z master g3749277493574937

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