Toro 74906 Operator's Manual
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Toro 74906 Operator's Manual

With 52in, 60in, or 72in turbo force side discharge mower
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Original Instructions (EN)
Z Master
®
6000 Series Riding Mower
with 52in, 60in, or 72in TURBO FORCE
Discharge Mower
Model No. 74906—Serial No. 315000001 and Up
Model No. 74918—Serial No. 315000001 and Up
Model No. 74926—Serial No. 315000001 and Up
Model No. 74928—Serial No. 315000001 and Up
Model No. 74930—Serial No. 315000001 and Up
Model No. 78926—Serial No. 315000001 and Up
Model No. 78928—Serial No. 315000001 and Up
Form No. 3394-296 Rev A
Professional 5000 and
®
Side
*3394-296* A

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Summary of Contents for Toro 74906

  • Page 1 52in, 60in, or 72in TURBO FORCE ® Side Discharge Mower Model No. 74906—Serial No. 315000001 and Up Model No. 74918—Serial No. 315000001 and Up Model No. 74926—Serial No. 315000001 and Up Model No. 74928—Serial No. 315000001 and Up Model No. 74930—Serial No. 315000001 and Up Model No.
  • Page 2 If you require a spark arrester, contact your Authorized Toro Service Dealer. Genuine Toro spark arresters are approved by the USDA Forestry Service. Figure 1 Important: It is a violation of California Public 1.

  • Page 3: Table Of Contents

    Contents Drive System Maintenance .........44 Checking the Seat Belt..........44 Checking the Knobs on the Rollover Protection Safety ................4 System (ROPS) ..........44 Safe Operating Practices........... 4 Adjusting the Tracking ..........45 Slope Indicator ............6 Checking the Tire Pressure ........45 Safety and Instructional Decals ......... 7 Checking the Wheel Lug Nuts ........46 Product Overview ............13 Checking the Wheel Hub Slotted Nut ......46...

  • Page 4: Safety

    Operation Safety • Lightning can cause severe injury or death. If lightning is seen or thunder is heard in the area, do not operate Improperly using or maintaining the machine can result the machine; seek shelter. in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the •...

  • Page 5: Maintenance And Storage

    To best protect your investment and maintain optimal performance of your Toro equipment, count on Toro • Allow engine to cool before refueling. genuine parts. When it comes to reliability, Toro delivers • Never refuel the machine indoors. replacement parts designed to the exact engineering specifications of our equipment.

  • 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. 58-6520 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 8 110-2068 1. Read the Operator's Manual. 112-9028 1. Warning—stay away from moving parts; keep all guards in place. 107-3069 1. Warning-there is no rollover protection when the roll bar is down. 114-4466 2. To avoid injury or death from a rollover accident, keep the roll bar in the fully raised and locked position and wear 1.
  • Page 9 116-1716 1. Fuel 6. Hour meter 2. Empty 7. PTO 3. Half 8. Parking brake 4. Full 9. Neutral 5. Battery 10. Operator presence switch 117-0346 1. Fuel leak hazard—read the Operator's Manual; do not attempt to remove the roll bar; do not weld, drill or modify 116-4858 the roll bar in any way.
  • Page 10 117-3864 1. Read the Operator’s 2. Fill to bottom of filler neck; Manual. warning—do not overfill the tank. 126-4398 1. Read the Operator’s 3. Unlock manual 2. Lock 121–7586 1. Fast 3. Slow 2. Variable speed control 4. Power take-off (PTO) 126-2055 1.
  • Page 11 Manufacturer's Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. Battery Symbols Some or all of these symbols are on your battery 1. Explosion hazard 6. Keep bystanders a safe distance from the battery. 2.
  • Page 12 116-8722 1. Warning-Read the Operator’s Manual. Do Not operate this 4. Cutting/dismemberment of hand or foot-stay away from machine unless you are trained. Wear hearing protection. moving parts; keep all guards and shields in place. 2. Warning-Stay away from moving parts; keep all guards 5.

  • Page 13: 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 14: 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. Specifications Note: Specifications and design are subject to change without notice.

  • Page 15: Operation

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

  • Page 16: Checking The Engine-Oil Level

    Filling the Fuel Tank Breaking in a New Machine 1. Park the machine on level ground. New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing 2. Shut the engine off and set the parking brake. additional load on the engine.

  • Page 17: Think Safety First

    Think Safety First Please read all safety instructions and symbols in the safety section. Knowing this information could help you or bystanders avoid injury. DANGER 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 18: Operating The Parking Brake

    Releasing the Parking Brake CAUTION This machine produces sound levels in excess of 85 dBA at the operator’s ear and can cause hearing loss through extended periods of exposure. Wear hearing protection when operating this machine. The use of protective equipment for eyes, ears, feet, and head is recommended.

  • Page 19: Operating The Throttle

    Operating the Throttle 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). G008946 G008948 Figure 17 Figure 15 1. On 2.

  • Page 20: The Safety-Interlock System

    Figure 18 g027337 Figure 19 6. Turn the ignition key to the Start position (Figure 16). When the engine starts, release the key. Important: Make sure that the fuel shut off valve is closed before transporting or storing the machine, as Stopping the Engine fuel leakage may occur.

  • Page 21: Driving Forward Or Backward

    • The blade-control switch (PTO) is disengaged. the engine should stop. Repeat for other motion control. • The motion-control levers are in the neutral-locked position 5. Sitting on the seat, disengage the parking brake, move the blade-control switch (PTO) to off and move the The safety-interlock system also is designed to stop the motion-control levers to neutral lock position.

  • Page 22: Stopping The Machine

    Driving Forward Note: The engine will kill if the traction control levers are moved with the parking brake engaged. To stop, pull the motion-control levers to the neutral position. 1. Release the parking brake; refer to Releasing the Parking Brake in Operation. 2.

  • Page 23: 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. 1. Move the transport lock to the lock position. 2.

  • Page 24: 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 25: Positioning The Seat

    • Use in wet conditions. • Lowers the engine power consumption. • Allows increased ground speed in heavy conditions. • This position is similar to the benefits of the Toro SFS mower. g019755 Figure 34 1. Seat latch 2. Seat...

  • Page 26: Changing The Seat Suspension

    Changing the Seat Suspension 2. Rotate the release valve levers vertically to push the machine. This allows hydraulic oil to by-pass the pump The seat is adjustable to provide a smooth and comfortable enabling the wheels to turn (Figure 36). ride.

  • Page 27: Transporting The Machine

    Transporting the Machine Loading the Machine Use extreme caution when loading or unloading machines Use a heavy-duty trailer or truck to transport the machine. onto a trailer or a truck. Use a full-width ramp that is wider Ensure that the trailer or truck has all necessary brakes, than the machine for this procedure.
  • Page 28 g027996 Figure 39 1. Full-width ramp in stowed 4. Ramp is at least four times position (4X) as long as the height of the trailer or truck bed to the ground 2. Side view of full-width 5. H= height of the trailer or ramp in loading position truck bed to the ground 3.

  • Page 29: Operating Tips

    File down any nicks and sharpen the it is late fall when grass grows more slowly. blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine TORO replacement blade. Mowing Direction Alternate mowing direction to keep the grass standing straight.

  • Page 30: Maintenance

    • Adjust the caster pivot bearing. Every 500 hours • Check the parking brake adjustment. • Change the hydraulic filters and hydraulic oil when using Toro® HYPR-OIL™ 500 hydraulic oil (more often in dirty or dusty conditions). • Replace the inner air filter.

  • Page 31: 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 Lubricating the Machine Grease more frequently when operating conditions are extremely dusty or sandy.
  • Page 32 g027339 G009029 Figure 44 Figure 42 5. Grease the drive belt idler arm (Figure 42). Figure 43 6. Remove the dust cap and adjust the caster pivots. Note: Keep the dust cap off until greasing is complete. Refer to Adjusting the Caster Pivot Bearing (page 46).

  • Page 33: Lubricate The Caster Wheel Hubs

    Lubricate the Caster Wheel 13. Apply a thread locking adhesive to the second spacer nut and thread it onto the axle with the wrench flats Hubs facing outward. 14. Torque the nut to 8-9 N-m (75-80 in-lb), loosen, then Service Interval: Yearly re-torque to 2-3 N-m (20-25 in-lb).

  • Page 34: Engine Maintenance

    Engine Maintenance 8. Gently slide the primary filter out of the air-cleaner body (Figure 47). Note: Avoid knocking the filter into the side of the WARNING body. Contact with hot surfaces may cause personal 9. Remove the inner filter only if you intend to replace it. injury.

  • Page 35: Servicing The Engine Oil

    Servicing the Engine Oil 2. If the inner filter is being replaced, carefully slide it into the filter body (Figure 47). Oil Type: Detergent oil (API service class SL, SM, SN, or 3. Carefully slide the primary filter over the inner filter higher) (Figure 47).

  • Page 36: Changing The Engine Oil

    Changing the Engine Oil Service Interval: Every 100 hours (more often in dirty or dusty conditions). Note: Dispose of the used oil at a recycling center. 1. Park the machine so that the rear is slightly lower than G008804 the front to ensure that the oil drains completely. 2.
  • Page 37 4. 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 51). G008804 g027660 Figure 51 5. Start the engine and drive to a flat area. Check the oil level again.

  • Page 38: Servicing The Spark Plugs

    Servicing the Spark Plugs Service Interval: Every 200 hours—Check and gap the spark plug. Make sure that the air gap between the center and side electrodes is correct before installing the spark plugs. Use a G008804 spark-plug wrench for removing and installing the spark plugs and a gapping tool/feeler gauge to check and adjust the air gap.

  • Page 39: Checking The Spark Plugs

    Checking the Spark Plugs Important: Replace the spark plugs when they have: a black coating, worn electrodes, an oily film, cracks or reuse is questionable. If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means that the air cleaner is dirty.

  • Page 40: Check Spark Arrester (If Equipped)

    Check Spark Arrester (if Fuel System equipped) Maintenance Service Interval: Every 50 hours WARNING WARNING Fuel system components are under high pressure. Hot exhaust system components may ignite The use of improper components can result in gasoline vapors even after the engine is stopped. system failure, gasoline leakage, and possible Hot particles exhausted during engine operation explosion.

  • Page 41: Servicing The High-Pressure Fuel Filter

    Electrical System Maintenance Servicing the Battery Service Interval: Monthly WARNING CALIFORNIA Proposition 65 Warning Battery posts, terminals, and related accessories contain lead and lead compounds, G008963 chemicals known to the State of California Figure 58 to cause cancer and reproductive harm. Wash hands after handling.

  • Page 42: Charging The Battery

    Charging the Battery 1. Disengage the blade-control switch (PTO), move the motion-control levers to the neutral-locked position and set the parking brake. WARNING 2. Stop the engine, remove the key, and wait for all moving Charging the battery produces gases that can parts to stop before leaving the operating position.

  • Page 43: Servicing The Fuses

    Servicing the Fuses 2. Make sure that the booster battery is a good and fully charged lead-acid battery at 12.6 volts or greater. Use The electrical system is protected by fuses. It requires properly sized jumper cables with short lengths to no maintenance;...

  • Page 44: Drive System Maintenance

    Drive System 4. Connect the other end of the positive cable to the positive terminal of the booster battery. Maintenance 5. Connect the black negative (–) cable to the other terminal (negative) of the booster battery. 6. Make the final connection on the engine block of Checking the Seat Belt the stalled vehicle (not to the negative battery post) away from the battery and stand back...

  • Page 45: Adjusting The Tracking

    g027340 Figure 66 Left control lever shown 1. Control lever 3. Stop plate 2. Bolt Checking the Tire Pressure Figure 65 1. ROPS knob (locked 3. Roll bar in the upright Service Interval: Every 50 hours/Monthly (whichever position) position comes first) 2.

  • Page 46: Checking The Wheel Lug Nuts

    Checking the Wheel Lug Nuts Important: Make sure that the spring washers are installed correctly as shown in Figure Check and torque the wheel lug nuts to 122 to 129 N-m (90 5. Install the dust cap (Figure 69). to 95 ft-lb). Checking the Wheel Hub Slotted Nut Service Interval: After the first 100 hours...
  • Page 47 Removing the Clutch Shim 1. Stop the engine, wait for all moving parts to stop, and remove the key. Engage the parking brake. Allow the machine to cool completely before starting these instructions. 2. Using an air compressor, blow out any debris from under the brake pole and around the brake spacers.

  • Page 48: Cooling System Maintenance

    Cooling System F. Perform the following safety check: i. Sit on the seat and start the engine. Maintenance ii. Make sure that the blades do not engage with the PTO switched off and the clutch disengaged. Cleaning the Engine Screen If the clutch does not disengage, install the and Engine-Oil Cooler shim and reference the Troubleshooting...

  • Page 49: Check And Clean The Hydraulic-Unit Shrouds

    Figure 77 Figure 78 1. Engine guard 4. Fan housing 1. Hydraulic unit shrouds 2. Engine air intake screen 5. Screw 3. Bolt 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 50: Brake Maintenance

    Brake Maintenance Adjusting the Parking Brake Service Interval: After the first 100 hours Every 500 hours thereafter Check to make sure the brake is adjusted properly before adjusting. Note: This procedure must be followed after the first 100 hours or when a brake component has been removed or replaced.

  • Page 51: 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 52: Replacing The Hydraulic Pump Drive Belt

    Figure 82 1. Position the belt cover 3. Ensure that the tab is Figure 83 under the metal catch 1. Idler pulley 5. Left-hand hydraulic pump 2. Slide belt cover under the pulley side catches 2. Clutch pulley 6. Square hole in idler arm 3.

  • Page 53: Controls System Maintenance

    Controls System Maintenance Adjusting the Control Handle Position There are 2 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. 2.

  • Page 54: Adjusting The Motion-Control Damper

    Adjusting the Motion-Control the jumper wire being used. Run the engine at full throttle and release the brake. Damper 6. Run the machine at least 5 minutes with the drive levers at full forward speed to bring hydraulic oil up The top damper mounting bolt can be adjusted to obtain a to operating temperature.

  • Page 55: Hydraulic System Maintenance

    Hydraulic System Maintenance Servicing the Hydraulic System Hydraulic Oil Type: Toro ® HYPR-OIL ™ 500 hydraulic oil or Mobil ® 1 15W-50. Figure 88 Important: Use oil specified. Other fluids could cause 1. Flanged nut 2. Jam nut system damage.
  • Page 56 Every 500 hours—Change the hydraulic filters and ® ™ hydraulic oil when using Toro HYPR-OIL hydraulic oil (more often in dirty or dusty conditions). To replace the hydraulic oil, the filters need to be removed. Replace both at the same time. Refer to the oil specifications...

  • Page 57: 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). 1. Position the machine 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 58 10. If needed, loosen the flanged locknut on the side of the yoke and the jam nut on top. Fine-tune the adjuster screw by turning it to get 7.6 mm (3 inch) height (Figure 94). To increase the height, turn the adjuster screw clockwise;...
  • Page 59 measurement should read 8.3 cm (3-1/4 inches); refer Figure 16. Fine-tune the adjuster screw by turning it to get 8.3 mm (3-1/4 inches) height (Figure 94). To increase the height, turn the adjustment nut clockwise; to decrease the height, turn the nut counterclockwise.

  • Page 60: Servicing The Cutting Blades

    If a blade is damaged or worn, replace the cutting edge, position A, of the blades (Figure 98). it immediately with a genuine Toro replacement blade. For Note this dimension. convenient sharpening and replacement, you may want to keep extra blades on hand.
  • Page 61 by other manufacturers may result in non-conformance with blade is not balanced, file some metal off the end of safety standards. the sail area only (Figure 102). Repeat this procedure until the blade is balanced. 1. Hold the blade end using a rag or thickly-padded glove. 2.

  • Page 62: Removing The Mower Deck

    Installing the Blades Removing the Mower Deck 1. Install the blade onto the spindle shaft (Figure 102). 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 mower to WARNING ensure proper cutting.
  • Page 63 Figure 104 1. Right stabilizer Figure 103 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 64: Replacing The Grass Deflector

    Replacing the Grass Deflector Cleaning WARNING Cleaning under the Mower Operating the machine with the engine running at a speed greater than the factory setting can cause Service Interval: Before each use or daily the machine to throw a part of the blade or engine 1.

  • Page 65: Storage

    Storage D. Restart the engine and run it until it stops. E. Dispose of fuel properly. Recycle as per local codes. Cleaning and Storage Important: Do not store 1. Disengage the power take off (blade-control switch stabilizer/conditioned fuel over 90 days. (PTO), set the parking brake, and turn the ignition key to Off.

  • Page 66: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action The malfunction Indicator Light (MIL) 1. The engine is too hot. 1. Turn the engine off and let it cool. comes on. 2. There is old gas in the gas tank. 2. Use new gas. 3.
  • Page 67 Problem Possible Cause Corrective Action The engine loses power. 1. The engine load is excessive. 1. Reduce the ground speed. 2. The air cleaner is dirty. 2. Clean the air-cleaner element. 3. The oil level in the crankcase is low. 3.
  • Page 68 Problem Possible Cause Corrective Action The clutch does not engage. 1. The fuse is blown. 1. Replace the fuse. Check the coil resistance, battery charge, charging system, and wiring connections, and replace components if necessary. 2. There is low voltage supply at the 2.

  • Page 69: Schematics

    Schematics G0131 19 Wire Diagram (Rev. A)
  • Page 70 Notes:...
  • Page 71 Notes:...
  • 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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