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Toro 74917 Operator's Manual
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Toro 74917 Operator's Manual

Z master g3 series with a 48in, 52in, 60in or 72in turbo force side discharge mower
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Form No. 3361-311 Rev D
Z Master G3 with a 48in, 52in,
60in or 72in TURBO FORCE
®
Side Discharge Mower
Model No. 74917—Serial No. 290000001 and Up
Model No. 74921—Serial No. 290000001 and Up
Model No. 74923—Serial No. 290000001 and Up
Model No. 74925—Serial No. 290000001 and Up
Model No. 74927—Serial No. 290000001 and Up
Model No. 74935—Serial No. 290000001 and Up
Model No. 74937—Serial No. 290000001 and Up
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. 290000001 and Up Model No. 74935—Serial No. 290000001 and Up Model No. 74937—Serial No. 290000001 and Up 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: Table Of Contents

    If you require a spark arrestor, contact 1. Model and serial number location your Authorized Toro Dealer. Genuine Toro spark arresters are approved by the USDA Forestry Service. Model No. Important: It is a violation of California Public Resource Code Section 4442 to use or operate Serial No.
  • Page 3 Checking the Engine Oil Level......14 Cleaning the Engine Screen and Engine Oil Breaking In a New Machine ........ 14 Cooler ............45 Using the Rollover Protection System Cleaning the Engine Cooling Fins and (ROPS) ............14 Shrouds............45 Think Safety First ..........15 Check and Clean the Hydraulic Unit Operating the Parking Brake .......

  • Page 4: Safety

    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 decals. in the event of an emergency. • Be aware there is no rollover protection when the • Use only Toro approved attachments. Warranty may roll bar is down. be voided if used with unapproved attachments.

  • Page 6: Slope Chart

    Slope Chart...

  • 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 8 109-7232 109-7304 107-2102 109-7929 107-2112 109-9477...
  • Page 9 110-2067 114-9834 1. Power Take-off (PTO) 4. Continuous variable setting 2. Choke 5. Slow 3. Fast 110-2068 1. Read the Operator’s Manual. 114-4466 1. Main, 25A 3. Charge, 25A 2. PTO, 10A 4. Auxiliary, 15A 115-7445 1. Grease pulleys 2. Maintenance interval—50...
  • Page 10 116-0090 116-0166 116-0157 116-0165 116-0205 Manufacturer’s Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. 109-7069...

  • Page 11: Product Overview

    Product Overview Use these times for scheduling regular maintenance (Figure 5). Fuel Gauge The fuel gauge is located with the hour meter and the bars light up when the ignition switch is on (Figure 5). The indicator light appears when the fuel level is low (approximately one gallon remaining in the fuel tank).

  • Page 12: Specifications

    1350 lb enhance and expand its capabilities. Contact your Kawasaki (569 kg) (612 kg) Units Authorized Service Dealer or Distributor or go to www.Toro.com for a list of all approved attachments 34HP 1255 lb 1350 lb Kawasaki (569 kg) (612 kg) and accessories.

  • Page 13: Operation

    Operation In certain conditions during fueling, static Note: Determine the left and right sides of the electricity can be released causing a spark machine from the normal operating position. which can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and Adding Fuel others and can damage property.

  • Page 14: Checking The Engine Oil Level

    Checking the Engine Oil Level Important: Do not use fuel additives containing methanol or ethanol. Before you start the engine and use the machine, check Add the correct amount of gas stabilizer/conditioner the oil level in the engine crankcase; refer to Checking to the gas.

  • Page 15: Think Safety First

    3. Lower the roll bar to the down position (Figure 7). Operating on wet grass or steep slopes can cause sliding and loss of control. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or drowning.

  • Page 16: Operating The Parking Brake

    Setting the Parking Brake Parking brake may not hold machine parked on a slope and could cause personal injury or property damage. Do not park on slopes unless wheels are chocked or blocked Figure 8 1. Safe Zone-use the 3. Water Z Master here on slopes less than 15 degrees or flat areas.

  • Page 17: Operating The Throttle

    Engaging the Blade Control Switch 2. Pull up on the choke knob to engage the choke (PTO) before using the ignition switch (Figure 15). 3. Push down on the choke to disengage the choke Note: Engaging the blade control switch (PTO) with after the engine has started (Figure 15).

  • Page 18: Using The Fuel Shut-Off Valve

    4. Move the blade control switch (PTO) to the Off position (Figure 18). 5. Move the throttle lever midway between the Slow and Fast positions. G008947 Figure 16 2. Turn the ignition key to stop to stop the engine. Using the Fuel Shut-Off Valve The fuel shut-off valve is located under the seat.

  • Page 19: The Safety Interlock System

    G008947 Figure 19 1. Off 3. Start 2. Run Stopping the Engine 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.

  • Page 20: Driving Forward Or Backward

    Understanding the Safety Interlock the motion control levers to neutral lock position. System Now start the engine. While the engine is running, release the parking brake, engage the blade control The safety interlock system is designed to prevent the switch (PTO) and rise slightly from the seat; the engine from starting unless: engine should stop.
  • Page 21 Using the Motion Control Levers G008952 Figure 23 Figure 22 Driving Backward 1. Motion control 4. Backward 1. Move the levers to the center, unlocked position. lever-neutral lock position 2. Center, unlocked position 5. Front of machine 2. To go backward, slowly pull the motion control 3.

  • 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

    4. Select a hole in the height-of-cut bracket corresponding to the height-of-cut desired and, insert the pin (Figure 26). 5. Push on the deck lift, pull back on the transport lock, and slowly lower the mower deck. Figure 27 1. Anti-scalp roller 4.

  • 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 35 1. Seat latch 2. Seat Using the Drive Wheel Release Valves Figure 33 Hands may become entangled in the rotating...

  • 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 Loading a unit onto a trailer or truck increases trucks. One full width ramp that is wide enough to the possibility of backward tip-over and could extend beyond the rear tires is recommended instead of cause serious injury or death.

  • Page 28: Operating Tips

    If enhances decomposition and fertilization. a blade is damaged or worn, replace it immediately with a genuine TORO replacement blade. Mow at Correct Intervals Normally, mow every four days. But remember, grass grows at different rates at different times.

  • Page 29: Maintenance

    Every 500 hours • Adjust the caster pivot bearing. • Check the park brake adjustment. • Change the hydraulic filters and hydraulic oil when using Toro Pro-Series oil. • Check the battery. Monthly • Grease the pump belt idler arm.

  • Page 30: Lubrication

    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 8. Pump grease into the zerk until it oozes out around moving parts to stop before leaving the operating the top bearing. position. 9. Remove the grease zerk in the hole. Install the hex plug and dust cap (Figure 42).

  • Page 32: Engine Maintenance

    Engine Maintenance Note: The seals must be replaced. 8. If the axle assembly has had both spacer nuts removed (or broken loose), apply a thread locking adhesive to one spacer nut and thread onto the axle with the wrench flats facing outward. Do Not thread Contact with hot surfaces may cause personal spacer nut all of the way onto the end of the axle.

  • 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 46).
  • 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 48). G008804 G008796 Figure 48 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 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 Maintenance Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, Servicing the Battery resulting in personal injury. Service Interval: Monthly • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable.
  • Page 40 Charging the Battery Charging the battery produces gasses that can explode. G008804 Never smoke near the battery and keep sparks and flames away from battery. 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).

  • 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 57).

  • Page 42: Adjusting The Tracking

    Figure 59 Left control lever shown 1. Control lever 3. Stop plate 2. Bolt Figure 58 Checking the Tire Pressure 1. ROPS knob (locked 3. Roll bar in the upright position) position Service Interval: Every 50 hours/Monthly (whichever 2. Pull ROPS knob out and 4.

  • Page 43: Checking The Wheel Hub Slotted Nut

    Note: Do not use anti-seize on the wheel hub. Adjusting the Caster Pivot Bearing Service Interval: Every 500 hours/Yearly (whichever comes first) 1. Disengage the blade control switch (PTO), move the motion control levers to the neutral locked position and set the parking brake. Figure 60 2.
  • Page 44 Note: Do Not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after the shim is removed to ensure proper brake torque. Figure 63 1. Armature 5.

  • Page 45: 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 Figure 67 the oil cooler (Figure 69). 1. Feeler gauge G008804 Figure 68 Figure 69 1.

  • Page 46: Check And Clean The Hydraulic Unit Shrouds

    Figure 70 1. Engine guard 4. Fan housing 2. Engine air intake screen 5. Screw 3. Bolt Figure 71 1. Hydraulic unit shrouds Check and Clean the Hydraulic Unit Shrouds Service Interval: Before each use or daily 1. Disengage the PTO and set the parking brake. 2.

  • Page 47: Brake Maintenance

    Brake Maintenance standard nut. Do Not allow the cable to turn when the nuts are tightened. 15. Close the drive wheel release valve. Refer to Using Adjusting the Parking Brake the Drive Wheel Valves in Operation. Service Interval: After the first 100 hours 16.

  • Page 48: Belt Maintenance

    Belt Maintenance Inspecting the Belts Service Interval: Every 50 hours Check the belts for squealing when the belt is rotating, blades slipping when cutting grass, frayed belt edges, burn marks and cracks are signs of a worn mower belt. Replace the mower belt if any of these conditions are evident.

  • Page 49: Replacing The Hydraulic Pump Drive Belt

    Figure 75 1. Position the belt cover 3. Ensure the tab is under Figure 76 the metal catch 2. Slide belt cover under the 1. Idler pulley 5. Left hand hydraulic pump side catches pulley 2. Clutch pulley 6. Square hole in idler arm 3.

  • 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 Damper

    Adjusting the Motion Control 5. Start engine. Brake must be engaged and motion control levers out to start engine. Operator does Damper not have to be in the seat because of the jumper wire being used. Run engine at full throttle and The top damper mounting bolt can be adjusted to release brake.

  • Page 52: Hydraulic System Maintenance

    Hydraulic System Maintenance Servicing the Hydraulic System Hydraulic Oil Type: Toro ® HYPR-OIL ™ Figure 81 hydraulic oil or Mobil ® 1 15W-50. 1. Flanged nut 2. Jam nut Important: Use oil specified or equivalent. Other fluids could cause system damage.
  • Page 53 Replacing the Hydraulic Filters and Hydraulic Oil Service Interval: Every 250 hours Every 500 hours To replace the hydraulic oil, the filters need to be removed. Replace both at the same time. Refer to the oil specifications under Servicing the Hydraulic System for the correct oil.

  • Page 54: 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 and set the parking brake.
  • Page 55 6. Insert the height adjustment pin into the 3 inch (7.6 cm) cutting height location. 7. Release the transport lock and allow the deck to lower to the cutting height. 8. Raise the discharge chute. 9. On both sides of the deck, measure from the level surface to the front tip of the blade (Postion A).

  • Page 56: Servicing The Cutting Blades

    If a blade is damaged or worn, replace it immediately with a genuine Toro replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand.
  • Page 57 1. Disengage the blade control switch (PTO), move the performance and continued safety conformance of motion control levers to the neutral locked position the machine, use genuine Toro replacement blades. and set the parking brake. Replacement blades made by other manufacturers may 2.
  • Page 58 Sharpening the Blades Installing the Blades 1. Install the blade onto the spindle shaft (Figure 95). Important: The curved part of the blade must be pointing upward toward the inside of the When sharpening blade, pieces of blade could mower to ensure proper cutting. be thrown and cause serious injury.

  • Page 59: Removing The Mower Deck

    Removing the Mower Deck Before servicing or removing the mower deck, the spring loaded deck arms must be locked out. Deck lift arm assemblies have stored energy. Removing the deck with out releasing the stored energy can cause serious injury or death. Do Not attempt to disassemble the deck from the front frame without locking out the stored energy.

  • Page 60: Replacing The Grass Deflector

    Note: Make sure the L end of the spring is installed behind the deck edge before installing the bolt as shown in Figure 98. 3. Install the bolt and nut. Place the J hook end of the spring around the grass deflector (Figure 98). Important: The grass deflector must be able to lower down into position.

  • Page 61: Cleaning

    Cleaning Storage Cleaning and Storage Cleaning Under the Mower 1. Disengage the power take off (blade control switch Service Interval: Before each use or daily (PTO), set the parking brake, and turn the ignition key to Off. Remove the key. 1.
  • Page 62 B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). C. Stop the engine, allow it to cool, and drain the fuel tank; refer to Servicing the Fuel Tank in the Maintenance Section. D. Restart the engine and run it until it stops. E.

  • 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 dissatisfi ed with your Distributor’s service or have diffi culty obtaining guarantee information, contact the Toro importer.

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