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Toro Z Master 75990 Operator's Manual

Toro Z Master 75990 Operator's Manual

Commercial 3000 series riding mower with 60in turbo force side discharge mower
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Original Instructions (EN)
Z Master
®
Series Riding Mower
with 60in TURBO FORCE
Mower
Model No. 75990—Serial No. 400000000 and Up
Form No. 3414-701 Rev C
Commercial 3000
®
Side Discharge
*3414-701* C

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Summary of Contents for Toro Z Master 75990

  • Page 1 Form No. 3414-701 Rev C Z Master ® Commercial 3000 Series Riding Mower with 60in TURBO FORCE ® Side Discharge Mower Model No. 75990—Serial No. 400000000 and Up *3414-701* C Register at www.Toro.com. Original Instructions (EN)
  • Page 2: Table Of Contents

    Whenever you need service, genuine Toro parts, or Safe Operating Practices........4 additional information, contact an Authorized Service Toro Mower Safety..........5 Dealer or Toro Customer Service and have the model Slope Indicator ........... 7 and serial numbers of your product ready. Figure 1 Safety and Instructional Decals ......
  • Page 3 Entering the User Position ........ 20 Cleaning the Engine Screen and Engine-Oil Think Safety First..........20 Cooler ............52 Operating the Parking Brake......21 Cleaning the Engine Cooling Fins and Operating the Mower Blade-Control Switch Shrouds ............52 (PTO) ............21 Checking and Cleaning the Hydraulic Operating the Throttle........
  • Page 4: Safety

    Safety • Inspect the area where the equipment is used, and remove all objects that can be thrown by the machine. Improper use or maintenance of the machine can • Check that operator's presence controls, safety result in injury. To reduce the potential for injury, switches, and shields are attached and functioning comply with these safety instructions and always properly.
  • Page 5: Toro Mower Safety

    Do not use a nozzle lock-open device. The following list contains safety information specific • If you spill fuel on your clothing, change your to Toro products and other safety information that you clothing immediately. must know. • Do not overfill the fuel tank. After filling the tank,...
  • Page 6 • To best protect your investment and maintain optimal performance of your Toro equipment, count on Toro genuine parts. When it comes to reliability, Toro delivers replacement parts designed to the exact engineering specifications of our equipment. For peace of mind, insist on Toro genuine parts.
  • Page 7: 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 8: 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 missing. decal58-6520 58-6520 decal106-2655 1. Grease 106-2655 1. Warning—do not touch or approach moving belts; remove the ignition key and read the instructions before servicing or performing maintenance.
  • Page 9 decal110-2068 110-2068 1. Read the Operator's Manual. decal112-9028 112-9028 1. Warning—stay away from moving parts; keep all guards in place. decal107-3069 107-3069 1. Warning—there is no rollover protection when the roll bar is down. decal114-4466 2. To avoid injury or death from a rollover accident, keep the 114-4466 roll bar in the raised and locked position and wear the seat belt.
  • Page 10 decal115-9625 115-9625 1. Parking 2. Parking brake—engaged brake—disengaged decal116-1716 decal117-0346 116-1716 117-0346 1. Fuel 6. Hour meter 1. Fuel leak hazard—read the Operator's Manual; do not 2. Empty 7. PTO attempt to remove the roll bar; do not weld, drill or modify the roll bar in any way.
  • Page 11 decal126-2055 126-2055 1. Wheel lug nut torque 95 ft-lb (129 N-m) (4x) 2. Wheel hub nut torque 235 ft-lb (319 N-m) 3. Read and understand the Operator’s Manual before decal117-3864 performing any maintenance, check torque after the first 117-3864 100 hours then every 500 hours thereafter. 1.
  • Page 12 decalbatterysymbols Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystanders a safe distance away from the battery. 2. No fire, open flame, or 7. Wear eye protection; decal127-0326 127-0326 smoking explosive gases can cause blindness and other 1.
  • Page 13 decal132-5067 132–5067 decal125-9383 125–9383 1. Check hydraulic oil every 50 operating hours. 3. Check the tire pressure every 50 operating hours. 2. Read the Operator’s Manual for information on lubricating 4. Read the Operator’s Manual before servicing or performing the machine. maintenance.
  • Page 14 decal132-0871 132-0871 Note: This machine complies with the industry standard stability test in the static lateral and longitudinal tests with the maximum recommended slope indicated on the decal. Review the instructions for operating the machine on slopes in the Operator’s Manual as well as the conditions in which you would operate the machine to determine whether you can operate the machine in those conditions on that day and at that site.
  • Page 15: Product Overview

    Fuel Gauge Product Overview The fuel gauge is located with the hour meter, and the bars light up when the ignition switch is on (Figure The indicator light appears when the fuel level is low—approximately 3.8 L (1 US gallon) remaining in the fuel tank.
  • Page 16: Specifications

    A selection of Toro approved attachments and accessories is available for use with the machine to enhance and expand its capabilities. Contact your Authorized Service Dealer or Distributor or go to www.Toro.com for a list of all approved attachments and accessories.
  • Page 17: Operation

    Operation DANGER In certain conditions during fueling, static Note: Determine the left and right sides of the electricity can cause a spark which can ignite machine from the normal operating position. the gasoline vapors. A fire or explosion from gasoline can burn you and others and can Adding Fuel damage property.
  • Page 18 Using Fuel Stabilizer/Conditioner Filling the Fuel Tank Park the machine on a level surface. Use a fuel stabilizer/conditioner in the machine to keep the fuel fresh during storage of 90 days or less. Engage the parking brake. If you are storing the machine for longer, drain the fuel Shut off the engine and remove the key.
  • Page 19: 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 (page 40). 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 20: Entering The User Position

    Entering the User Position Use the mower deck as a step to get into the user position (Figure g000963 Figure 10 1. Safe Zone—use the 3. Water machine here on slopes g029797 less than 15 degrees or Figure 9 flat areas. 2.
  • Page 21: Operating The Parking Brake

    Operating the Parking Operating the Mower Brake Blade-Control Switch (PTO) Always engage the parking brake when you stop the The blade-control switch (PTO) starts and stops the machine or leave it unattended. mower blades and any powered attachments. Engaging the Parking Brake Engaging the Blade-Control Switch (PTO) WARNING...
  • Page 22: Operating The Throttle

    Operating the Throttle Operating the Ignition Switch The throttle control can be moved between the F and S positions (Figure 16). Turn the ignition key to the S position TART Always use the F position when engaging the (Figure 18). When the engine starts, release mower deck with the blade-control switch (PTO).
  • Page 23: Using The Fuel-Shutoff Valve

    Using the Fuel-Shutoff Starting the Engine Valve Raise and lock the roll bar into place, sit on the seat, and fasten the seat belt. The fuel-shutoff valve is located under the seat. Move Move the motion controls to neutral-locked the seat forward to access it. position.
  • Page 24: Stopping The Engine

    Stopping the Engine The Safety-Interlock System CAUTION Children or bystanders may be injured if they CAUTION move or attempt to operate the machine while If the safety-interlock switches are it is unattended. disconnected or damaged the machine could Always remove the ignition key and set the operate unexpectedly causing personal injury.
  • Page 25: Driving Forward Or Backward

    Testing the Safety-Interlock CAUTION System The machine can spin very rapidly. You may lose control of the machine and cause Service Interval: Before each use or daily personal injury or damage to the machine. Test the safety-interlock system before you use the •...
  • Page 26: 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. Engage the parking brake when you leave the machine;...
  • Page 27: Adjusting The Anti-Scalp Rollers

    Adjusting the Height-of-Cut Pin The height of cut is adjusted from 25 to 140 mm (1 to 5-1/2 inches) in 6 mm (1/4 inch) increments by moving the clevis pin into different hole locations. Move the transport lock to the L position.
  • Page 28: Adjusting The Flow Baffle Cam Locks

    Adjusting the Flow Baffle Cam Locks This procedure is applicable only to machines with the flow baffle locks. Certain models will have nuts and bolts in-place of the flow baffle locks and can be adjusted the same. The mower discharge flow can be adjusted for different types of mowing conditions.
  • Page 29: Positioning The Flow Baffle

    This is the full-rear position. The suggested use for • This position offers benefits similar to those of the this position is as follows: Toro SFS mower. • Use for short, light grass mowing conditions. • Use in dry conditions.
  • Page 30: Unlatching The Seat

    Unlatching the Seat Adjusting the MyRide™ Suspension System The MyRide™ suspension system adjusts to provide a smooth and comfortable ride. You can adjust the rear 2-shock assemblies to quickly and easily change the suspension system. Position the suspension system where you are most comfortable. Adjusting the Rear-Shock Assemblies The slots for the rear-shock assemblies have...
  • Page 31: Using The Drive Wheel Release Valves

    Using the Drive Wheel Adjust the rear-shock assemblies (Figure 38). Release Valves WARNING Hands may become entangled in the rotating drive components below the engine deck, which could result in serious injury. Stop the engine, remove the key, and allow g030024 all moving parts to stop before accessing the drive wheel release valves.
  • Page 32: Using The Side Discharge

    Transporting the Machine 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 33: Loading The Machine

    Loading the Machine Use extreme caution when loading or unloading machines onto a trailer or a truck. Use a full-width ramp that is wider than the machine for this procedure. Back up the ramp and drive forward down the ramp (Figure 41).
  • Page 34: Operating Tips

    Alternate mowing direction to keep the grass standing as necessary. If a blade is damaged or worn, replace straight. This also helps disperse clippings which it immediately with a genuine Toro replacement blade. enhances decomposition and fertilization. Mow at Correct Intervals Normally, mow every four days.
  • Page 35: Maintenance

    Every 500 hours • Adjust the caster pivot bearing. • Check the parking brake adjustment. • Change the hydraulic filters and hydraulic fluid when using Toro® HYPR-OIL™ 500 hydraulic oil (more often in dirty or dusty conditions). • Check the battery.
  • Page 36: 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 the Mower Deck Service Interval: Every 50 hours—Grease the mower Greasing and Lubrication deck spindles and idler arm (if equipped).
  • Page 37: Greasing The Pump-Belt-Idler Arm

    Greasing the Greasing the Caster-Wheel Pump-Belt-Idler Arm Bearings Service Interval: Yearly—Grease the pump-belt-idler Service Interval: Yearly—Grease the front caster arm. pivots (more often in dirty or dusty conditions). Grease the pump-belt-idler arm (Figure 45). Yearly—Repack the front caster-wheel bearings (more often in dirty or dusty conditions). Remove the dust cap and adjust the caster pivots.
  • Page 38: Lubricating The Caster-Wheel Hubs

    Lubricating the With the open end of the wheel facing up, fill the area inside the wheel around the axle full of Caster-Wheel Hubs general-purpose grease. Insert the second bearing and a new seal into Service Interval: Yearly the wheel. Engage the parking brake, shut off the engine, Apply a thread-locking adhesive to the second wait for all moving parts to stop, and remove...
  • Page 39: Engine Maintenance

    Engine Maintenance WARNING Contact with hot surfaces may cause personal injury. Keep your hands, feet, face, clothing and other body parts away the muffler and other hot surfaces. Servicing the Air Cleaner g009031 Service Interval: Every 250 hours—Replace the Figure 48 primary air filter.
  • Page 40: Servicing The Engine Oil

    Servicing the Engine Oil Oil Type: Detergent oil (API service SG, SH, SJ, or Crankcase Capacity: with a filter change, 2.1 L (2.2 US qt); without a filter change, 1.8 L (1.9 US qt) g029644 Viscosity: See the table below. g004216 Figure 49 Note:...
  • Page 41 Changing the Engine Oil Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the Service Interval: After the first 8 hours additional oil to bring it to the Full mark (Figure 52). Every 100 hours (more often in dirty or dusty conditions).
  • Page 42: Servicing The Spark Plugs

    Servicing the Spark Plugs Service Interval: Every 100 hours Make sure that the air gap between the center electrode and the side electrode is correct before installing each spark plug. Use a spark-plug wrench for removing and installing the spark plugs and a g029644 gapping tool/feeler gauge to check and adjust the air gap.
  • Page 43 Checking the Spark Plugs Important: Never clean the spark plug(s). Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the g029645 insulator usually means that the air cleaner is dirty.
  • Page 44: Checking The Spark Arrester

    Installing the Spark Plugs Fuel System Tighten the spark plugs to 24.4 to 29.8 N∙m (18 to 22 Maintenance ft-lb). Replacing the Fuel Filter Service Interval: Every 500 hours/Yearly (whichever comes first) (more often in dirty or dusty conditions). The fuel filter is located near the engine on the front or rear side of the engine.
  • Page 45: Servicing The Fuel Tank

    Servicing the Fuel Tank Electrical System Maintenance Do not attempt to drain the fuel tank. Ensure that an Authorized Service Dealer drains the fuel tank and services any components of the fuel system. Servicing the Battery Service Interval: Monthly WARNING CALIFORNIA Proposition 65 Warning Battery posts, terminals, and related...
  • Page 46 Installing the Battery WARNING Position battery in the tray with the terminal Incorrect battery cable routing could damage posts opposite from the hydraulic tank (Figure the machine and cables causing, sparks. 59). Sparks can cause the battery gases to explode, resulting in personal injury. Install the positive (red) battery cable to positive (+) battery terminal.
  • Page 47: Servicing The Fuses

    Charging the Battery Servicing the Fuses The electrical system is protected by fuses. It requires WARNING no maintenance; however, if a fuse blows check the Charging the battery produces gases that can component/circuit for a malfunction or short. explode. The fuses are located on right hand console next to the seat (Figure 61).
  • Page 48: Drive System Maintenance

    Drive System Maintenance Checking the Seat Belt Service Interval: Before each use or daily Visually inspect seat belt for wear, cuts, and proper operation of retractor and buckle. Replace before operating if damaged. Checking the Rollover Protection System (ROPS) Knobs Service Interval: Before each use or daily WARNING To avoid injury or death from rollover, keep...
  • Page 49: Checking The Tire Pressure

    Checking the Wheel Lug Tighten the stop plate (Figure 63). Nuts Check and torque the wheel lug nuts to 122 to 129 N∙m (90 to 95 ft-lb). Checking the Wheel Hub Slotted Nut Service Interval: After the first 100 hours Every 500 hours Check and ensure that the torque of the slotted nut is 286 to 352 N∙m (211 to 260 ft-lb).
  • Page 50: Using The Clutch Shim

    Removing the Clutch Shim Important: Make sure the spring washers are installed correctly as shown in Figure Park the machine on a level surface, engage the Install the dust cap (Figure 66). parking brake. shut off the engine, wait for all moving parts to stop, and remove the key.
  • Page 51 Using needle-nose pliers, or by hand, take hold of the tab and remove the shim. Note: Do not discard the shim until proper clutch function has been confirmed. g010873 Figure 72 1. Feeler gauge • If the gap is less than 0.010 inch, g010871 Figure 70 then reinstall the shim and reference...
  • Page 52: Cooling System Maintenance

    Cooling System Maintenance Cleaning the Engine Screen and Engine-Oil Cooler Service Interval: Before each use or daily Remove any buildup of grass, dirt, or other debris from the oil cooler (Figure 73). g029644 g004218 Figure 74 1. Engine guard 4. Fan housing 2.
  • Page 53: Checking And Cleaning The Hydraulic Units

    Checking and Cleaning the Brake Maintenance Hydraulic Units Adjusting the Parking Service Interval: Before each use or daily Brake Disengage the PTO and engage the parking brake. Service Interval: After the first 100 hours Shut off the engine, remove the key, and wait Every 500 hours thereafter for all moving parts to stop before leaving the operating position.
  • Page 54: 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. These are signs of a worn mower belt; replace the mower belt if any of these conditions are evident.
  • Page 55 g027730 Figure 79 1. Position the belt cover. 3. Ensure that the tab is under the metal catch. 2. Slide the belt cover under the side catches. g009038 Figure 78 1. Clutch pulley 5. Square hole in the idler arm for the ratchet 2.
  • Page 56: Replacing The Hydraulic Pump-Drive Belt

    Replacing the Hydraulic Controls System Pump-Drive Belt Maintenance Disengage the PTO and engage the parking brake. Adjusting the Control Shut off the engine, remove the key, and wait Handle Position for all moving parts to stop before leaving the operating position. There are two height positions for the control levers;...
  • Page 57: Adjusting The Motion-Control Linkage

    Start the engine. The brake must be engaged and motion-control levers out to start engine. You do not have to be in the seat because of the jumper wire being used. Run the engine at full throttle and release the brake. Run the unit at least 5 minutes with the drive levers at full forward speed to bring hydraulic oil up to operating temperature.
  • Page 58: Adjusting The Motion-Control Damper

    Adjusting the Adjusting the Motion-Control Damper Motion-Control Neutral-Lock Pivot The top damper mounting bolt can be adjusted to obtain a more desired motion-control lever resistance. The flanged nut can be adjusted to obtain a more Figure 84 for mounting options. desired motion-control lever resistance when moving it to the neutral-lock position.
  • Page 59: Hydraulic System Maintenance

    Hydraulic System Maintenance Servicing the Hydraulic System Hydraulic Fluid 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: 1.5 L (1.59 US qt) per side with filter change Checking the Hydraulic Oil Service Interval: Every 50 hours—Check the...
  • Page 60 Mobil ® 1 oil (more often in dirty or dusty conditions). Every 500 hours—Change the hydraulic filters and hydraulic fluid when using Toro ® HYPR-OIL ™ 500 hydraulic oil (more often in dirty or dusty conditions).
  • Page 61: Mower Deck Maintenance

    Mower Deck Maintenance Leveling the Mower Deck Setting up the Machine Note: Ensure that the mower deck is leveled before matching the height of cut (HOC). Position the machine on a flat surface. Disengage the blade-control switch (PTO), move g029840 Figure 89 the motion-control levers to the neutral-locked position, and engage the parking brake.
  • Page 62 Note: To increase the height, turn the adjuster the length of the available travel in their slots. screw clockwise; to decrease the height, turn it This will regain some up-and-down adjustment counterclockwise. on each of the 4 deck links. g009042 g010251 Figure 93 Figure 91...
  • Page 63: Servicing The Cutting Blades

    1. Cutting edge 3. Wear/slot forming damaged or worn, replace it immediately with a 2. Curved area 4. Crack genuine Toro replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand. Checking for Bent Blades DANGER...
  • Page 64 Blades must be replaced if a solid object is hit, if the blade is out of balance or is bent. To ensure optimum performance and continued safety conformance of the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards.
  • Page 65: Removing The Mower Deck

    Sharpening the Blades WARNING When sharpening blades, pieces of a blade could be thrown and cause serious injury. Wear proper eye protection when sharpening blades. Use a file to sharpen the cutting edge at both ends of the blade (Figure 97).
  • Page 66 Raise the deck struts and secure them in the up position. Slide the deck out to the right side of the machine. g009038 Figure 100 1. Clutch pulley 5. Square hole in the idler arm for the ratchet 2. Mower belt 6.
  • Page 67: Replacing The Grass Deflector

    Replacing the Grass Cleaning Deflector Cleaning under the Mower WARNING Service Interval: Before each use or daily Operating the machine with the engine Disengage the blade-control switch (PTO), move running at a speed greater than the factory the motion-control levers to the neutral-locked setting can cause the machine to throw a position, and engage the parking brake.
  • Page 68: Storage

    Storage Run the engine to distribute conditioned fuel through the fuel system (5 minutes). Stop the engine, allow it to cool, and drain Cleaning and Storage the fuel tank; refer to Servicing the Fuel Tank (page 45). Disengage the power take off (blade-control switch (PTO), set the parking brake, and turn the Restart the engine and run it until it stops.
  • Page 69: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action The starter does not crank. 1. The blade-control switch (PTO) is 1. Move the blade-control switch (PTO) engaged. to the disengaged position. 2. The parking brake is not on. 2. Set the parking brake. 3.
  • Page 70 Problem Possible Cause Corrective Action The machine does not drive. 1. The bypass valves are not closed tight. 1. Tighten the bypass valves. 2. The pump belt is worn, loose, or 2. Change the belt. broken. 3. The pump belt is off a pulley. 3.
  • Page 71: Schematics

    Schematics g009180 Wire Diagram (Rev. A)
  • Page 72 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. If all other remedies fail, you may contact us at Toro Warranty Company.

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