Table of Contents
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Form No. 3364-287 Rev D
Z Master
®
G3 Riding Mower
with 60in or 72in TURBO FORCE
®
Side
Discharge Mower
Model No. 74926—Serial No. 310000001 and Up
Model No. 74928—Serial No. 310000001 and Up
Model No. 78926—Serial No. 310000001 and Up
Model No. 78928—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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Table of Contents
Related Manuals for Toro 74926 Z Master G3
Summary of Contents for Toro 74926 Z Master G3
- Page 1 Model No. 74928—Serial No. 310000001 and Up Model No. 78926—Serial No. 310000001 and Up Model No. 78928—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...
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Page 3: Table Of Contents
Safe Operating Practices ........4 Jump Starting the Machine........42 Slope Indicator............. 6 Drive System Maintenance ........44 Safety and Instructional Decals ......7 Checking the Seat Belt ........44 Product Overview ............11 Checking the Rollover Protection System Controls ............. 11 (ROPS) Knobs .......... -
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: Slope Operation
• 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 9 116-0205 115-7445 1. Grease pulleys and spindles 2. Maintenance interval—50 hours 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 116-0090 116-3303 116-0157 116-0165...
- Page 10 Battery Symbols 116-4858 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; smoking. explosive gases can cause blindness and other injuries 3.
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Page 11: Product Overview
Hour Meter Product Overview The hour meter records the number of hours the engine has operated. It operates when the engine is running. 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). -
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... -
Page 13: Operation
Operation DANGER In certain conditions during fueling, static Note: Determine the left and right sides of the electricity can be released causing a spark which machine from the normal operating position. can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and others and can damage property. -
Page 14: Checking The Engine Oil Level
Checking the Engine Oil Level Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline. To minimize the Before you start the engine and use the machine, check chance of varnish deposits in the fuel system, use fuel the oil level in the engine crankcase;... -
Page 15: Think Safety First
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. There is no rollover protection when the roll bar is down. -
Page 16: Operating The Parking Brake
CAUTION This machine produces sound levels in excess of 85 dBA at the operators 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 17: Operating The Throttle
Disengaging the Blade Control Switch (PTO) G008947 G009174 Figure 16 Figure 14 2. Turn the ignition key to stop to stop the engine. Operating the Throttle Using the Fuel Shut-Off Valve The throttle control can be moved between Fast and The fuel shut-off valve is located under the seat. -
Page 18: Stopping The Engine
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 19 1. Off 3. Start 2. Run Stopping the Engine CAUTION Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended. -
Page 19: The Safety Interlock System
• The blade control switch (PTO) is disengaged. • The motion control levers are in the neutral locked position The safety interlock system also is designed to stop the engine when the traction controls are moved from the locked position with the parking brake engaged or if you rise from the seat when the PTO is engaged. -
Page 20: Driving Forward Or Backward
Using the Motion Control Levers the motion control levers to neutral lock position. Now start the engine. While the engine is running, center either motion control and move (forward or reverse); the engine should stop. Repeat for other motion control. 5. -
Page 21: 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 22: 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 23: 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 24: Positioning The Seat
• Use in tall, dense grass mowing conditions. • Use in wet conditions. • Lowers the engine power consumption. Figure 35 • Allows increased ground speed in heavy conditions. 1. Seat latch 2. Seat • This position is similar to the benefits of the Toro SFS mower. -
Page 25: Using The Drive Wheel Release Valves
Using the Drive Wheel 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 all moving parts to stop before accessing the drive wheel release valves. -
Page 26: Transporting Machines
Transporting Machines Loading Machines Use extreme caution when loading units on trailers or Use a heavy-duty trailer or truck to transport the trucks. One full width ramp that is wide enough to machine. Ensure that the trailer or truck has all extend beyond the rear tires is recommended instead of necessary brakes, lighting, and marking as required by individual ramps for each side of the unit (Figure 38). -
Page 27: Operating Tips
Mowing Direction Alternate mowing direction to keep the grass standing straight. This also helps disperse clippings which enhances decomposition and fertilization. Mow at Correct Intervals 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 28 Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine TORO replacement blade.
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Page 29: Maintenance
• Check the torque for wheel lug nuts. • Adjust the caster pivot bearing. Every 500 hours • Check the park brake adjustment. • Change the hydraulic filters and hydraulic oil when using Toro® HYPR-OIL™ 500 hydraulic oil. • Replace the inner air filter. Every 600 hours •... -
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 40). 4. Grease the three spindle bearings until grease comes out the lower seals (Figure 40). -
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 g012996 Figure 44 1. Air inlet cover 3. Air cleaner body g012997 2. Air inlet screen 4. Latch Figure 45 4. Latch 1. Inner filter 6. Release the latches on the air cleaner and pull the air 2. Primary filter 5.
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Page 34: Servicing The Engine Oil
Servicing the Engine Oil Important: Do not press on the soft inside area of the filter. Oil Type: Detergent oil (API service class SJ or higher) 4. Install the air cleaner cover and secure the latches Oil Capacity: with a filter change, 58 ounces (1.7 L); (Figure 45). -
Page 35: 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. Start the engine and let it run five minutes. This G008804 warms the oil so it drains better. 2. -
Page 36: Changing The Engine Oil Filter
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 37: Servicing The Spark Plug
Servicing the Spark Plug Service Interval: Every 200 hours—Check, clean and regap the spark plug. Make sure the air gap between the center and side electrodes is correct before installing the spark plug. G008804 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 38: Check Spark Arrester (If Equipped)
Checking the Spark Plug Important: Replace the spark plug(s) when it has: 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 the air cleaner is dirty. -
Page 39: Fuel System Maintenance
Fuel System 2. Wait for muffler to cool. 3. If any breaks in the screen or welds are observed, Maintenance replace the arrester. 4. If plugging of the screen is observed, remove the WARNING arrester and shake loose particles out of the arrester Fuel system components are under high pressure. -
Page 40: 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 G008963 accessories contain lead and lead compounds, chemicals known to the State of California Figure 56 to cause cancer and reproductive harm. 1. -
Page 41: Installing The Battery
WARNING Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. G008804 • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. •... -
Page 42: Servicing The Fuses
Servicing the Fuses WARNING Charging the battery produces gasses that can The electrical system is protected by fuses. It requires explode. no maintenance, however, if a fuse blows check the component/circuit for a malfunction or short. Never smoke near the battery and keep sparks and flames away from battery. - Page 43 DANGER Jump starting a weak battery that is cracked, frozen, has low electrolyte level, or an open/shorted battery cell, can cause an explosion resulting in serious personal injury. Do Not jump start a weak battery if these conditions exist. 2. Make sure the booster battery is a good and fully charged lead acid battery at 12.6 volts or greater.
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Page 44: 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 g0131 17 operation of retractor and buckle. Replace before Figure 62 operating if damaged. 1. Engine block 2. -
Page 45: 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 64). 8. Tighten the stop plate (Figure 64). Figure 64 Left control lever shown Figure 63 1. -
Page 46: Checking The Wheel Hub Slotted Nut
Figure 67 1. 0.1 inch max 2. No more than two threads Figure 65 (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 47: Using The Clutch Shim
2. Using an air compressor, blow out any debris from under the brake pole and around the brake spacers. Figure 70 3. Check the condition of the wire harness leads, Figure 68 connectors, and terminals. Clean or repair as 1. Spring Washers 3. - Page 48 • 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.
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Page 49: 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 75). G008804 Figure 76 1. Engine guard 4. Fan housing 2. -
Page 50: 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 51: 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 52: Replacing The Hydraulic Pump Drive Belt
Figure 81 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 80 Drive Belt 1. Clutch pulley 5. Square hole in the idler arm for the ratchet 1. -
Page 53: 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 54: 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 55: 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 86 for mounting options. Figure 87 1. Flanged nut 2. Jam nut Figure 86 RH Motion Control Shown 1. -
Page 56: 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 57 1 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. Refer to the oil specifications under Servicing the Hydraulic System for the correct oil.
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Page 58: 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 91 and set the parking brake. - Page 59 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 95). 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.
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Page 60: Servicing The Cutting Blades
(Figure 97). 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 97). Note this dimension. blade. For convenient sharpening and replacement, you may want to keep extra blades on hand. - Page 61 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 99 2. Remove the blade bolt, curved washer, and blade 1.
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Page 62: Removing The Mower Deck
Installing the Blades Removing the Mower Deck 1. Install the blade onto the spindle shaft (Figure 101). 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 63: Replacing The Grass Deflector
Figure 103 1. Right stabilizer Figure 102 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: 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 65: 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 66: 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 67 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 68 Problem Possible Cause Corrective Action 8. Low voltage from battery. 8. Ensure a good 12 volt battery is being used and is fully charged. 9. Blown fuse. 9. Check and replace any blown fuses.
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Page 69: Schematics
Schematics G0131 19 Wire Diagram (Rev. A) - Page 70 Notes:...
- Page 71 Notes:...
- Page 72 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.