Form No. 3425-458 Rev A GrandStand® Mower With 36in or 40in TURBO FORCE® Cutting Unit Model No. 74534—Serial No. 403365764 and Up Model No. 74536—Serial No. 403365744 and Up Model No. 79534—Serial No. 403260000 and Up Register at www.Toro.com.
Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers on the product. Write the numbers in the space provided.
Contents Servicing the Battery......................................... 35 Servicing the Fuses .......................................... 37 Drive System Maintenance .................................. 37 Adjusting the Tracking ..................................... 37 Adjusting the Proximity Switch .......................... 38 Checking the Tire Pressure............................... 39 Adjusting the Caster-Pivot Bearing ................... 39 Adjusting the Electric Clutch .............................
Safety • Keep bystanders and children out of the operating area. Do not allow children to operate the machine. Allow only people who are responsible, trained, familiar with the instructions, and physically capable to operate the machine. This machine has been designed in accordance with ANSI B71.4-2017. • Stop the machine, shut off the engine, and remove General Safety the ignition key before servicing, fueling, or unclogging the machine.
decal110-2067 110-2067 decal116-8772 116-8772 1. Accessory, 15A 3. Charge, 25A 2. PTO, 10A 4. Main, 30A decal115-4186 115-4186 1. Interval 2. PTO 3. Parking brake decal116-8775 116-8775 4. Neutral 5. Operator presence switch 1. Read the Operator’s Manual. 6. Battery 2. Warning—fill to the bottom of the filler neck; do not overfill the tank. decal115-4212 115-4212 1. Hydraulic fluid level 3. Warning—do not touch the hot surface. 2. Read the Operator's Manual.
decal119-2317 119-2317 1. Height of cut decal119-0187 119-0187 Models with a 102 cm or 40-Inch Deck 1. Belt routing decal121-6049 121–6049 1. Thrown object hazard—keep bystanders away. decal119-0217 119-0217 3. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts. 2. Thrown object hazard, mower—do not operate the mower with guards or shields removed. 1. Warning—stop the engine; stay away from moving parts; keep all guards and shields in place.
decal117-0454 117-0454 1. Traction control 3. Slow 5. Reverse 2. Fast 4. Neutral 6. PTO—disengage 7. Operator presence switch decal117-3626 117-3626 5. Thrown object hazard—keep bystanders away. 1. Warning—read the Operator's Manual. 2. Warning—do not operate this machine unless you are trained. 6. Warning—engage the parking brake, shut off the engine, and remove the key before performing maintenance. 3. Thrown object hazard—lower the deflector before using the machine. 7.
Controls Product Overview Become familiar with all the controls (Figure 4) before you start the engine and operate the machine. Control Panel g020528 Figure 3 1. Side-discharge chute 7. Operator cushion 2. Battery 8. Platform (down position) 3. Engine 9. Hydraulic tank 4. Fuel tank 5. Control panel 10. Mower deck 11. Front caster wheel g020529 Figure 4 6. Motion-control levers 1. Fuel cap 7. Hour meter 2. Height-of-cut lever 8. Choke control 3. Power-Takeoff switch (PTO) 9.
Fuel Gauge Fuel-Shutoff Valve The fuel gauge is located on the top, middle of the tank (Figure 4). Close the fuel-shutoff valve (located behind the operator cushion on the right hand side of fuel tank) when transporting or storing the mower. Safety-Interlock Indicators Specifications Symbols on the hour meter indicate with a black triangle that the interlock component is in the correct position (Figure 5). Note: Specifications and design are subject to change without notice.
Operation – Store fuel in an approved container and keep it out of the reach of children. • Fuel is harmful or fatal if swallowed. Long-term Before Operation exposure to vapors can cause serious injury and illness. – Avoid prolonged breathing of vapors. Before Operation Safety – Keep your hands and face away from the nozzle and the fuel-tank opening. General Safety – Keep fuel away from your eyes and skin.
Using the Safety-Interlock System • Do not use gasoline containing methanol. • Do not store fuel either in the fuel tank or fuel containers over the winter unless you use a fuel stabilizer. WARNING • Do not add oil to gasoline. If safety-interlock switches are disconnected or damaged, the machine could operate unexpectedly, causing personal injury. • Do not tamper with the interlock switches.
Note: If the safety system does not operate as footwear; and hearing protection. Tie back long hair and do not wear loose clothing or loose jewelry. described below, have an Authorized Service Dealer repair the safety system immediately. 1. 2. • Use your full attention while operating the Start the engine; refer to Starting the Engine (page 15). machine. Do not engage in any activity that causes distractions; otherwise, injury or property damage may occur.
Be aware that operating the machine on wet grass, across slopes or downhill may cause the machine to lose traction. Loss of traction to the drive wheels may result in sliding and a loss of braking and steering. The machine can slide even if the drive wheels are stopped. – Disengage the power take-off. – Engage the parking brake. – Shut off the engine and remove the ignition key. – Wait for all moving parts to stop.
Operating the PTO Operating the Throttle Use the power-takeoff (PTO) switch in conjunction with the motion-control levers to engage and disengage mower blades or powered attachments. You can move the throttle control between FAST and SLOW positions (Figure 11). Always use the FAST position when engaging the PTO. Engaging the Power-Takeoff (PTO) Switch g008946 Figure 11 Operating the Choke Use the choke to start a cold engine. 1.
Operating the Ignition Switch Starting the Engine Important: Do not engage the starter for more than 5 seconds at a time. If the engine fails to start, wait 15 seconds between attempts. Failure to follow these instructions can burn out the starter motor. Important: Do not engage the starter for more than 5 seconds at a time. If the engine fails to start, wait 15 seconds between attempts. Failure to follow these instructions can burn out the starter motor.
Shutting Off the Engine WARNING The operator platform is heavy and may cause injury when you raise or lower it. Carefully lower or raise the operator platform, as suddenly dropping it could injure you. CAUTION Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. • Do not put your hands or fingers in the platform-pivot area when lowering or raising the operator platform.
2. Move the right motion-control lever to the center, unlocked position. g012181 Figure 17 1. Platform up g020531 Figure 18 3. Pull the knob out to release the platform. 2. Platform down 4. Right motion-control lever 2. Left motion-control lever 5. Right motion-control lever in the NEUTRAL-LOCK position 3. Rear reference bar Driving Forward or Backward The throttle control regulates the engine speed as measured in rpm (revolutions per minute).
Side Discharging or Mulching the Grass This machine has a hinged grass deflector that disperses clippings to the side and down toward the turf. DANGER Without the grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris cause injury or death. • Do not remove the grass deflector from the machine, because the grass deflector routes material down toward the turf.
Positioning the Flow Baffle The following figures are for recommended use only. Adjustments vary by grass type, moisture content, and the height of the grass. Note: If the engine power draws down and the mower ground speed is the same, open the baffle. Position A This is the full, rear position (see Figure 23). Use this position for the following: • In short, light grass mowing conditions g020532 • In dry conditions Figure 21 1. Height-of-cut holes • Smaller grass clippings 3. Height-of-cut lever 2.
Position B • Add or remove weights 1 at a time until you Use this position when bagging (Figure 24). • achieve the desired handling and balance. Refer to the Operator’s Manual of attachments for recommended weights. Note: Contact an Authorized Service Dealer to order a weight kit. WARNING Excessive weight changes can affect the handling and operation of the machine. This could cause serious injury to you or bystanders. • Make weight changes in small increments only.
g020864 g012680 Figure 27 g008948 1. Pump-bypass valve Figure 26 1. ON position 2. OFF position 4. Disengage the parking brake. 5. Push the machine to the desired location. Pushing the Machine by Hand 6. Engage the parking brake. 7. Close the bypass valves but do not overtighten them. The bypass valves allow you to push the machine by hand without the engine running. 8. Torque the valves to 12 to 15 N∙m (110 to 130 in-lb). Important: Always push the machine by hand.
Transporting the Machine Use a heavy-duty trailer or truck to transport the machine. Use a full-width ramp. Ensure that the trailer or truck has all the necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you or bystanders avoid injury. Refer to your local ordinances for trailer and tie-down requirements.
g031405 Figure 29 1. Back the machine up the ramp. 2. Walk the machine down the ramp. 6. Shut off the engine, remove the key, and engage the parking brake. 7. Tie down the machine near the front caster wheels and the rear bumper with straps, chains, cable, or ropes (Figure 30). Refer to local regulations for tie-down requirements. g012183 Figure 30 1.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Maintenance Safety • Never tamper with safety devices. Check their proper operation regularly. • Before adjusting, cleaning, servicing, or leaving the machine, do the following: • Clean grass and debris from the cutting unit, drives, muffler, and engine to help prevent fires. Clean up oil or fuel spills. – Park the machine on a level surface. – Disengage the drives.
Maintenance Service Interval Maintenance Procedure Every 100 hours Clean the paper air-cleaner element (more often in dirty or dusty conditions). Change the engine oil. Check, clean and gap the spark plug. Check the battery. Check the electric clutch. Check and clean engine cooling fins and shrouds (more often in dirty or dusty conditions). • Check the mower-deck belt(s). • Check the pump-drive belt. • Check the hydraulic hoses.
7. With 2 people, raise the front of the mower so that it rests on the drive tires and the platform in the up position. 8. Perform any maintenance on the machine. 9. With 2 people, lower the front of the mower to the ground. 10. Remove the plastic under the hydraulic-tank cap. 11. Install the battery for the machine. g012597 Figure 31 1. Wing nut 4. Positive (+) battery cable 2. Battery cover 5. Battery 3. Negative (–) battery cable 5. 6.
Lubrication Releasing the Cushion for Rear Access Greasing the Machine You can release the cushion for rear access to the machine for maintenance or adjustment. 1. Lower the platform. 2. Remove the hairpin cotters on each side of the cushion. 3. Service Interval: Every 50 hours—Grease the mower-deck idler arms (more often in dirty or dusty conditions). Every 50 hours—Grease the lift linkage (more often in dirty or dusty conditions). Slide the large washers with plastic bushings to the inside.
Greasing the Caster-Wheel Hubs Service Interval: Yearly Grease type: Lithium or molybdenum grease g012594 Figure 36 Models with a 102 cm or 40-Inch Mower Deck 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Remove the caster wheel from the caster forks. 4. Remove the seal guards from the wheel hub (Figure 38). g006115 Figure 38 1.
10. Insert the assembled nut and axle into the wheel on the side of the wheel with the new seal and bearing. Engine Maintenance 11. With the open end of the wheel facing up, fill the area inside the wheel around the axle full of general-purpose grease. Engine Safety 12. Insert the second bearing and the new seal into the wheel. 13. Apply a thread-locking adhesive to the second spacer nut, threading it onto the axle with the wrench flats facing outward. 14.
Installing the Foam and Paper Elements Important: To prevent engine damage, always operate the engine with the complete foam and paper air-cleaner assembly installed. 1. Carefully slide the foam element onto the paper air-cleaner element (Figure 39). 2. Place the air-cleaner assembly onto the base of the air cleaner or hose and secure it (Figure 39). 3. Place the air-cleaner cover into position and tighten the cover knob (Figure 39). Servicing the Engine Oil g012619 Figure 39 1. Cover 3.
Changing the Engine Oil run engine with oil below the low mark because the engine may be damaged. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Service Interval: After the first 8 hours Every 100 hours Note: Dispose of the used oil at a recycling center. Check the engine-oil level as shown in (Figure 41). 1.
g012187 g027478 Figure 44 Checking the Spark Plug g194610 Important: Do not clean the spark plug(s). Figure 43 6. Start the engine and drive to a flat area. 7. Check the oil level again. 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 insulator usually means the air cleaner is dirty. Servicing the Spark Plug Set the gap to 0.75 mm (0.
Installing the Spark Plug Fuel System Maintenance Draining the Fuel Tank Note: Use a syphon pump to drain fuel from the tank. You can purchase a syphon pump at a hardware store. DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you, others, and can damage property. • Perform any fuel-related maintenance when the engine is cold. Do this outdoors in an open area. Wipe up any fuel that spills.
g020861 Figure 47 1. Fuel cap Replacing the Fuel Filter Service Interval: Every 800 hours/Yearly (whichever comes first) g033082 Figure 48 Do not install a dirty filter if it is removed from the fuel line. Note: Wipe up any spilled fuel. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3.
Electrical System Maintenance Electrical System Safety • Disconnect the battery or remove the spark-plug wire before making any repairs. Disconnect the negative terminal first and the positive terminal last. Connect the positive terminal first and negative last. • Charge the battery in an open, well-ventilated area, away from sparks and flames. Unplug the charger before connecting or disconnecting the battery. Wear protective clothing and use insulated tools.
Installing the Battery Charging the Battery Install the battery as shown in Figure 51. WARNING Charging the battery produces gasses that can explode. Never smoke near the battery and keep sparks and flames away from battery. Important: Always keep the battery fully charged (1.265 specific gravity) to prevent battery damage when the temperature is below 0°C (32°F). 1. Remove the battery from the chassis; refer to Removing the Battery (page 35). 2. Check the electrolyte level. 3.
Servicing the Fuses Drive System Maintenance The electrical system is protected by fuses. It requires no maintenance. If a fuse blows, check the component or circuit for a malfunction or short. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Release the operator cushion from the rear of the machine. 4.
3. Check the distance of the bolt to the proximity switch; it needs to be between 0.51 to 1.02 mm (0.02 to 0.04 inches) as shown in Figure 55. 4. If adjustment is needed, loosen the jam nut and adjust the bolt to the correct distance. 5. Tighten the jam nut after adjusting the bolt (Figure 55). 6. Test the safety-interlock system before operating the machine. g017848 Figure 54 1. Left cable adjustment 3. Right cable adjustment 2. Cable lock 7. Check for proper tracking.
Checking the Tire Pressure Service Interval: Every 50 hours/Monthly (whichever comes first) Maintain the air pressure in the rear tires at 83 to 97 kPa (12 to 14 psi). Important: Uneven tire pressure can cause an uneven cut. Note: The front tires are semi-pneumatic tires and do not require air-pressure maintenance. g001297 Figure 57 1. Spring washers 3. Dust cap 2. Locknut Adjusting the Electric Clutch g001055 Figure 56 Service Interval: Every 100 hours—Check the electric clutch.
Cooling System Maintenance the rotor and armature with very slight contact between them. Cleaning the Air-Intake Screen Service Interval: Before each use or daily Before each use, remove any buildup of grass, dirt, or other debris from the cylinder and cylinder-head cooling fins, air-intake screen on the flywheel end, and the carburetor-governor levers and linkage.
Brake Maintenance Testing the Parking Brake Service Interval: Before each use or daily Before each use, test the parking brake on both a level surface and slope. Always engage the parking brake when you stop the machine or leave it unattended. If the parking brake does not hold securely, adjust it. g017626 Figure 59 1. Guard 4. Fan housing 2. Engine air-intake screen 5. Screw 3. Bolt 1. Disengage the PTO and engage the parking brake 2.
Adjusting the Brakes 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Disengage the parking brake. 4. To adjust the brake, remove the clevis pin and hairpin cotter from the lower-brake lever and yoke (Figure 61). 5. Adjust the yoke (Figure 60).
Belt Maintenance Checking the Belts Service Interval: Every 100 hours—Check the mower-deck belt(s). Check belts for cracks, frayed edges, burn marks, wear, signs of overheating, or any other damage. g012738 The signs of a worn mower belt are squealing while the belt is rotating, blades slipping while you are cutting grass, frayed belt edges, burn marks, and cracks. Replace the mower belt if you detect any of these signs. Figure 62 1. Belt 3. Spring 2.
g012737 Figure 64 1. Belt 3. Spring 2. Spring-loaded idler pulley 7. Install the previously removed or a new mower belt around the deck pulleys and idler pulley (Figure 62). 8. Install the spring onto the anchor post on the idler-pulley arm (Figure 62). 9. Install the belt covers onto the mower deck and secure the bolts. Replacing the Pump-Drive Belt Service Interval: Every 100 hours—Check the pump-drive belt. g015402 1.
Controls System Maintenance Adjusting the Right Motion-Control Lever If the motion-control levers do not align horizontally, adjust the right motion-control lever. Note: Adjust the horizontal alignment before adjusting the front to back alignment. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3.
slack in the linkage for the control levers (Figure 68). g012706 Figure 68 1. Left motion-control lever 3. NEUTRAL-LOCK position 2. Right motion-control lever 4. Align the motion-control levers front to back. g012684 Figure 69 1. Left cable adjustment 2. Cable lock 2. Ensure that the right motion-control lever moves easily into the NEUTRAL-LOCK position. Note: Turn the cable adjustment clockwise to move the motion-control handle forward.
Hydraulic System Maintenance Hydraulic System Safety • Seek immediate medical attention if fluid is injected into skin. Injected fluid must be surgically removed within a few hours by a doctor. • Ensure that all hydraulic-fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to the hydraulic system. g012005 Figure 70 • Keep your body and hands away from pinhole leaks or nozzles that eject high-pressure hydraulic fluid. 1. Cap 3.
1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Remove hydraulic reservoir cap. 4. Locate the front hydraulic hose under the hydraulic tank and place a drain pan under the tank (Figure 71). 5. Loosen the hose clamp and move it down the hose. 6. Remove the front hydraulic hose and allow the fluid to run out of the tank.
Bleeding the Hydraulic System The traction system is self-bleeding, however, it may be necessary to bleed the system if fluid is changed or after work is performed on the system. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Raise the rear of the machine onto jack stands high enough to raise the drive wheels off the ground. 4.
Mower Deck Maintenance Servicing the Cutting Blades To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, keep extra blades on hand. g006530 Figure 74 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Crack Blade Safety A worn or damaged blade can break, and a piece of the blade could be thrown toward you or bystanders, resulting in serious personal injury or death. Checking for Bent Blades 1.
WARNING A blade that is bent or damaged could break apart and could critically injure you or bystanders. g000552 Figure 77 • Always replace a bent or damaged blade with a new blade. 1. Sharpen at original angle. • Do not file or create sharp notches in the edges or surfaces of the blade. 2. Removing the Blades Note: If the blade stays in a horizontal position, the blade is balanced and can be used. Replace the if a blade hits a solid object, is out of balance, or is bent.
43.7 cm (17-3/16 inches) for 102 cm (40 inch) mower decks. 2. Loosen the jam nuts at the front swivel (Figure 80). 3. Using the jam nuts, adjust the length of the threaded rod to achieve the correct distance. 4. Tighten the jam nuts at the front swivel (Figure 80). g004536 Figure 79 1. Sail area of the blade 3. Spring disk 2. Blade 4.
g020858 Figure 82 1. Measure here from the blade to the level surface. 2. Measure at C and D. g020807 Figure 81 1. Adjustment bolt 4. Deck hanger arm 2. Jam nut 5. The distance needs to be 11 mm (7/16 inch). Matching the Rear of the Mower Deck 3. Yoke Adjusting the Right Side Front-to-Rear Mower Deck Pitch 1. Position the right blade front-to-rear (Figure 82). 2.
g020859 g020860 Figure 83 1. Measure here from the blade to the level surface. Figure 84 2. Measure at B and D 1. Measure here from the blade to the level surface. Leveling the Front of the Mower Deck 1. Position the left and right blades front-to-rear. 2. Inspect the front chains and ensure that each chain has tension. Matching the Height of Cut 1. Lower the mower to the 76 mm (3 inch) height-of-cut position. 2. Position the right blade front-to-rear (Figure 82). 3.
g020703 Figure 86 g020808 Figure 85 1. Jam nut 3. Front nut 1. 25.7 cm (10-1/8 inch) for 102 cm (40 inch) mower decks and 28.2 cm (11-1/8 inch) for 91 cm (36 inch) mower decks 2. Spring jam nut 4. Compression spring 3. Groove indicating left threads 2. Turnbuckle Adjusting the Compression Spring 5. Note: Adjusting the compression spring alters how much the deck floats and the amount of effort needed to lift the deck when using the height-of-cut lever.
Cleaning Cleaning under the Mower Deck Service Interval: Before each use or daily Before each use or daily Remove the grass buildup under the mower daily. g001975 Figure 87 1. Bolt 5. Spring (installed) 2. Spacer 6. Grass deflector 3. Locknut 7. J-hook end of the spring Remove the damaged or worn grass deflector. 3. Place the spacer and the spring onto the grass deflector. 4. Place 1 J-hook end of the spring behind the deck edge. Install the bolt and the nut. 6.
Storage E. Important: Do not store fuel containing Storage Safety stabilizer/conditioner longer than the duration recommended by the fuel-stabilizer manufacturer. • Let the engine cool before storing the machine. • Do not store the machine or fuel near flames or drain the fuel indoors. Cleaning and Storage 10. Remove the spark plug(s) and check its condition; refer to Servicing the Spark Plug (page 32). 11.
Troubleshooting Problem The engine does not start, starts hard, or fails to keep running. The engine loses power. The engine overheats. The machine does not drive. There is abnormal vibration. Possible Cause Corrective Action 1. The fuel tank is empty or the shutoff valve is closed. 1. Fill the fuel tank with fuel and open the valve 2. The choke control is not engaged. 3. A spark-plug wire is loose or disconnected. 4. A spark plug is pitted, fouled, or the gap is incorrect. 5.
Problem The cutting height is uneven. Possible Cause 1. Blade(s) are not sharp. 1. Sharpen the blade(s). 2. Cutting blade(s) is/are bent. 3. The mower deck is not level. 2. Install new cutting blade(s). 3. Level the mower deck side-to-side position. 4. Adjust the front-to-rear pitch. 5. Clean the underside of the mower deck. 6. Adjust the tire pressure. 7. Contact an Authorized Service Dealer. 4. The mower deck pitch is wrong. 5. The underside of mower deck is dirty. 6.
Schematics g009494 Hydraulic Schematic (Rev.
g015606 Electrical Schematic (Rev.
Notes:
Notes:
California Proposition 65 Warning Information What is this warning? You may see a product for sale that has a warning label like the following: WARNING: Cancer and Reproductive Harm—www.p65Warnings.ca.gov. What is Prop 65? Prop 65 applies to any company operating in California, selling products in California, or manufacturing products that may be sold in or brought into California.
