Form No. 3425-449 Rev A GrandStand® Mower With 48in or 52in TURBO FORCE® Cutting Unit Model No. Model No. Model No. Model No. Register at www.Toro.com. Original Instructions (EN) 74504—Serial No. 74505—Serial No. 79504—Serial No. 79505—Serial No.
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 Replacing the Fuel Filter ................................... 33 Electrical System Maintenance ........................... 34 Electrical System Safety ................................... 34 Servicing the Battery......................................... 34 Servicing the Fuses .......................................... 36 Drive System Maintenance .................................. 36 Adjusting the Tracking ...................................... 36 Checking the Tire Pressure..........................
Safety • Keep clear of the discharge opening. • 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. General Safety • Stop the machine, shut off the engine, and remove the ignition key before servicing, fueling, or unclogging the machine.
decal116-8775 116-8775 1. Read the Operator’s Manual. 2. Warning—fill to the bottom of the filler neck; do not overfill the tank. decal131-3507 131-3507 1. Read the Operator's Manual. 2. Belt tensioner decal131-3521 131-3521 1. Height of cut decal131-1180 131-1180 1. Read the Operator's Manual. 2. Short, light grass; dry conditions 3. Bagging setting 4. Tall, dense grass; wet conditions decal131-3524 131-3524 1. Read the Operator's Manual. 2. Transmission fluid 5 3.
131-3528 15A 15A 10A 7.5A decal131-3528 131-3528 1. Key switch—15 A 2. Accessory port—15 A 3. Power takeoff (PTO)—10 A 4. Infocenter—7.5 A decal133-4604 133-4604 1. Thrown object hazard—keep bystanders away from the machine. 3. Severing hazard of hand or foot—keep away from moving parts. 2. Thrown object hazard, open baffle—only operate the machine with a baffle or a grass collector. 4. Entanglement hazard—keep away from moving parts; keep all guards and shields in place.
decal131-3525 131-3525 1. Disengage the parking brake. 5. Fast 2. Engage the parking brake. 6. Engine—speed 3. Engage the PTO. 7. Slow 4. Disengage the PTO. decal131-3526 131-3526 1. Power takeoff (PTO)—disengaged 5. Reverse 2. Fast 3. Slow 6. Traction drive 7. Engage the handles. 4. Neutral decal136-5438 136-5438 1. Warning—read the Operator's Manual. 6. Thrown object hazard—keep bystanders away from 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 g031446 Figure 3 1. Front caster wheel 2. Side-discharge chute 7. Fuel tank 8. Platform (down position) 3. Engine 9. Fuel-shutoff valve 4. Control panel 10. Battery 5. Motion-control levers 6. Hydraulic tank 11. Mower deck g031182 Figure 4 1. Fuel cap 2. Choke control 3. Parking-brake lever 8. Height-of-cut lever 9. Height-of-cut pin 10.
Specifications is running. Use these times for scheduling regular maintenance (Figure 5). Note: Specifications and design are subject to change without notice. g009467 Figure 5 1. Safety-interlock symbols 3. Hour meter 2.
Operation • Before Operation Before Operation Safety General Safety • • Never allow children or untrained people to operate the machine. Local regulations may restrict the age of the operator. The owner is responsible for training all operators and mechanics. • • Become familiar with the safe operation of the equipment, operator controls, and safety signs. • Know how to stop the machine and shut off the • engine quickly.
Using Stabilizer/Conditioner Breaking in a New Machine Use fuel stabilizer/conditioner in the machine to keep the fuel fresh longer when used as directed by the fuel-stabilizer manufacturer. New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine. Allow 40 to 50 hours of break-in time for new machines to develop full power and best performance. Important: Do not use fuel additives containing methanol or ethanol.
Testing the Safety-Interlock System During Operation Service Interval: Before each use or daily During Operation Safety Test the safety-interlock system before you use the machine each time. General Safety Note: If the safety system does not operate as • The owner/operator can prevent and is responsible for accidents that may cause personal injury or property damage. described below, have an Authorized Service Dealer repair the safety system immediately. 1.
• Disengage the cutting unit and shut off the engine • • • • • • machine could suddenly roll over if a wheel goes over the edge or the edge collapses. Keep a safe distance (twice the width of the machine) between the machine and any hazard. Use a walk-behind machine or a handheld tool to operate in these areas. before adjusting the height of cut (unless you can adjust it from the operating position). Operate the engine only in well-ventilated areas.
Operating the Mower-Blade-Control Switch (PTO) Operating the Throttle You can move the throttle control between FAST and SLOW positions (Figure 12). Always use the FAST position when engaging the PTO. Use the blade-control switch (PTO) in conjunction with the motion-control levers to engage and disengage the mower blades. Engaging the Mower Blades (PTO) g008946 Figure 12 Operating the Choke Use the choke to start a cold engine. g031592 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.
Operating the Platform Shutting Off the Engine You can use the machine with the platform in the up or down position. It is your preference on which position to use. CAUTION Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. 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.
Driving Forward 1. Disengage the parking brake; refer to Operating the Parking Brake (page 13). 2. Move the motion-control levers to the center, unlocked position. g031026 Figure 18 1. Platform up 3. Pull the knob out to release the platform. 2. Platform down g030983 Figure 19 Driving Forward or Backward The throttle control regulates the engine speed as measured in rpm (revolutions per minute). Place the throttle control in the FAST position for best performance. 1. Front reference bar 4.
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.
Adjusting the Height-of-Cut The height-of-cut can be adjusted from 38 to 127 mm (1-1/2 to 5 inches) in 6 mm (1/4 inch) increments. Note: Using a height-of-cut under 51 mm (2 inches) increases the wear on the mower-deck belt. Use a height-of-cut that is greater than 51 mm (2 inches) whenever possible. g012676 Figure 23 2. Nut 1. Slot 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.
Position B Using Weights Use this position when bagging (Figure 25). • Install weights to improve balance. You can add or remove weights to create optimized performance under different operating conditions and for your preference. • Add or remove weights 1 at a time until you 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.
Using the Fuel-Shutoff Valve After Operation After Operation Safety Close the fuel-shutoff valve for transport, maintenance, and storage (Figure 27). General Safety Ensure that the fuel-shutoff valve is open when starting the engine. • Always shut off the machine, remove the ignition key, wait for all moving parts to stop, and allow the machine to cool before adjusting, servicing, cleaning, or storing it.
Pushing 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 30 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 31). Refer to local regulations for tie-down requirements. g229507 Figure 29 1. Full-width ramp in stowed position 3. H=height of the trailer or truck bed to the ground 2.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. 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 and disconnect the spark-plug wires from the spark plugs before you do any maintenance. Set the wires aside so that they do not accidentally contact the spark plugs. Maintenance Safety • Never tamper with safety devices.
Maintenance Service Interval Every 100 hours Maintenance Procedure • • • • • Change the engine oil. Check, clean and gap the spark plug. Check the battery. Check the clutch. Check and clean the engine cooling fins and shrouds (more often in dirty or dusty conditions). • Check the mower-deck belt(s). Every 200 hours • Change the engine-oil filter. Every 250 hours • Replace the primary air filter (more often in dirty or dusty conditions).
Lubrication Greasing the Front Caster Pivots Greasing the Machine Service Interval: Yearly Grease with No. 2 lithium or molybdenum grease. 1. Disengage the PTO and set 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. Grease type: Lithium or molybdenum grease 1. Remove the dust cap and adjust the caster pivots; refer to Adjusting the Caster-Pivot Bearing (page 37).
Greasing the Motion Controls Remove the axle (with the other spacer nut still assembled to it) from the wheel assembly. 6. Pry out the seals, inspect bearings for wear or damage, and replace them if necessary. 7. Pack the bearings with a general-purpose grease. 8. Insert 1 bearing and 1 new seal into the wheel. Service Interval: Yearly Grease the operator-presence-control balljoint and the motion-control bushing for both levers.
Engine Maintenance Note: Avoid knocking the filter into the side of the body. 6. Engine Safety • Shut off the engine before checking the oil or Inspecting the Filters adding oil to the crankcase. 1. • Keep your hands, feet, face, clothing, and other body parts away from the muffler and other hot surfaces. safety filter. If the safety filter is dirty, then the primary filter is damaged. 2. Every 250 hours—Replace the primary air filter (more often in dirty or dusty conditions).
Servicing the Engine Oil Engine-Oil Specifications Oil Type:: Detergent oil (API service SF, SG, SH, SJ or SL) g031341 Engine Oil Capacity: 2.1 L (71 fl oz) with the filter; 1.8 L (61 fl oz) without the filter Viscosity: Refer to the table below. g004216 Figure 37 Checking the Engine-Oil Level Service Interval: Before each use or daily Note: Check the oil when the engine is cold. WARNING Contact with hot surfaces may cause personal injury.
Changing the Engine Oil Service Interval: After the first 8 hours Every 100 hours Note: Dispose of the used oil at a recycling center. 1. Park the machine so that the drain side is slightly lower than the opposite side to assure the oil drains completely. 2. Disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake. 3. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 4.
Removing the Spark Plug g031341 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 spark plug as shown in Figure 42. g031449 g027478 Figure 42 Checking the Spark Plug Important: Do not clean the spark plug(s). Always replace the spark plug(s) when it has a black coating, worn electrodes, an oily film, or cracks.
Installing the Spark Plug Fuel System Maintenance Draining the Fuel Tank You can drain the fuel tank by removing it and pouring the fuel out of the fill neck; refer to Removing the Fuel Tank (page 33). You can also drain the fuel tank by using a siphon in the following procedure. DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property.
Replacing the Fuel Filter Service Interval: Every 800 hours/Yearly (whichever comes first) Do not install a dirty filter if it is removed from the fuel line. Note: Wipe up any spilled fuel. g031397 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. Close the fuel-shutoff valve; refer to Using the Fuel-Shutoff Valve (page 21). 4.
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 50. 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 34). 2. Check the electrolyte level. 3.
Servicing the Fuses Drive System Maintenance The electrical system is protected by fuses and requires no maintenance. If a fuse blows, check the component or circuit for a malfunction or short. Adjusting the Tracking 1. Release the cushion from the rear of the machine. 2. Pull out the fuse to remove or replace it (Figure 51). 3. Install the cushion to the rear of the machine.
tracking by adjusting the left control rod, contact your Authorized Service Dealer. Adjusting the Caster-Pivot Bearing 6. Check that the machine does not creep from the neutral position with the park brakes disengaged. Service Interval: Every 500 hours/Yearly (whichever comes first) 7. Install the fuel tank, if you removed it. 8. Install the cushion. Note: If you are unable to achieve proper 1.
1. Removing the Clutch Shim Remove the locknut and wheel bolt holding the caster wheel to the caster fork (Figure 55). Service Interval: Every 100 hours When the clutch brake has worn to the point where the clutch no longer engages consistently, you can remove the shim to extend the clutch life (Figure 56). g010869 g009453 Figure 56 Figure 55 1. Locknut 4. Roller bearing 1. Armature 5. Brake spacer 2. Bushing 5. Caster wheel 3. Spanner bushing 6. Wheel bolt 2. Field shell 3. Rotor 6. Shim.
6. is sometimes difficult to measure the true gap. Measure the gap between the rotor and armature. If the gap is greater than 1 mm (0.04 inch), proceed with the following steps: A. Loosen both brake mounting bolts 1/2 to 1 full turn as shown in Figure 58. Note: Do not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after you remove the shim to ensure the proper brake torque. g010872 Figure 60 1.
Checking the Wheel-Lug Nuts Cooling System Maintenance Service Interval: After the first 100 hours—Check the wheel-lug nuts. Cleaning the Air-Intake Screen Check and torque the wheel-lug nuts to 115 to 142 N∙m (85 to 105 ft-lb). 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 Belt Maintenance Testing the Parking Brake Checking the Belts Service Interval: Before each use or daily Service Interval: Every 100 hours—Check the mower-deck belt(s). Before each use, test the parking brake on both a level surface and slope. Check belts for cracks, frayed edges, burn marks, wear, signs of overheating, or any other damage. Always engage the parking brake when you stop the machine or leave it unattended. If the parking brake does not hold securely, adjust it. 1.
Replacing the Transmission Belt Service Interval: Every 1,000 hours—Replace the transmission belt. 1. Remove the fuel tank; refer to Removing the Fuel Tank (page 33). 2. Remove the hydraulic-reservoir cap. 3. Locate the drain plugs in the bottom of the transmission and place a drain pan under the plug (Figure 65). g031402 Figure 65 1. Drain plug 4. Allow the hydraulic fluid to drain from the machine. 5. Remove the lower hydraulic hose (Figure 66). g031344 Figure 64 g031345 Figure 66 1.
Controls System Maintenance CAUTION The spring is under tension when installed and can cause personal injury. Wear safety glasses and be careful when removing the spring. Adjusting the Motion-Control Levers 7. Remove the deck belt from the clutch and clutch stop (Figure 66). 8. Install the new belt. 9. Install the tension spring and lower hydraulic hose. 1. Park the machine on a level surface, disengage the PTO, and engage the parking brake. 10.
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. g031538 Figure 68 1. Cam 2. Nut • Keep your body and hands away from pinhole 7.
4. Remove the hydraulic-reservoir cap. 5. Locate the drain plug in the bottom of each transmission and place a drain pan under the plugs (Figure 70). g031401 Figure 69 g032671 1. Hydraulic-tank cap Figure 70 2. Fill level 1. Drain plug 4. 2. Hydraulic filter Remove the cap from the filler neck (Figure 69). Note: Look inside to check the fluid level in the reservoir. 5. Add fluid to the reservoir until it reaches the reaches the minimum cold fill level. 6. Install the cap on the filler neck.
Important: Use the fluid specified in Hydraulic System Specifications (page 44) or equivalent. Other fluids could cause system damage. Mower Deck Maintenance Important: Monitor the level of fluid in the Servicing the Cutting Blades hydraulic tank so that you do not overfill it. 13. Tighten the vent plugs. 14. Install the hydraulic-tank cap. 15. Install the fuel tank. 16. Start the engine and let it run for about 2 minutes to purge air from the system. 17.
WARNING A blade that is bent or damaged could break apart and could critically injure you or bystanders. • Always replace a bent or damaged blade with a new blade. • Do not file or create sharp notches in the edges or surfaces of the blade. g006530 Figure 72 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Crack Removing the Blades Replace the if a blade hits a solid object, is out of balance, or is bent.
g000552 Figure 75 1. Sharpen at original angle. 2. Check the balance of the blade by putting it on a blade balancer (Figure 76). Note: If the blade stays in a horizontal position, the blade is balanced and can be used. Note: If the blade is not balanced, file some metal off the end of the sail area only (Figure 76). g004536 Figure 77 g000553 1. Sail area of the blade 3. Spring disk 2. Blade 4. Blade bolt Figure 76 1. Blade 2. Balancer Leveling the Mower Deck 3.
4. Measure at the B and C locations from a level surface to the cutting edge of blade tips (Figure 78). 2. Rotate the top bolt of the yokes to adjust the height of the mower deck (Figure 79). Note: Rotate the bolts clockwise to raise the deck; rotate the bolt counterclockwise to lower it. 3. Tighten the jam nuts and side bolts. 4. Check the side-to-side height; refer to Checking the Mower Deck Side-to-Side Height (page 48). Checking the Mower Deck Front-to-Rear Pitch 1.
g031416 g000975 Figure 81 1. Top bolt 4. Side nut 2. Jam nut 5. Adjust these yokes to adjust the front side of the mower deck. 6. Adjust these yokes to adjust the rear side of the mower deck. 1. Measure from a level surface 2. Measure the blade at point A 5. If the measurement is not correct, locate the front 2 yokes on the machine (Figure 81). 6. Loosen the side bolt and jam nut of the yokes. Rotate the top bolt of the yokes to adjust the height of the mower deck (Figure 81). 7.
Replacing the Grass Deflector Adjusting the Deck-Lift Spring Note: Adjusting the compression spring alters how WARNING much the deck floats and the amount of effort needed to lift the deck when using the height-of-cut lever. An uncovered discharge opening could allow the machine to throw objects toward you or bystanders, resulting in serious injury. Also, contact with the blade could occur. • More spring compression reduces the lever lift force required and causes the deck to float more.
Cleaning Storage Cleaning under the Mower Deck Storage Safety • Let the engine cool before storing the machine. • Do not store the machine or fuel near flames or drain the fuel indoors. Service Interval: Before each use or daily Before each use or daily Cleaning and Storage Remove the grass buildup under the mower daily. 1. Park the machine on a level surface, disengage the PTO, move the motion-control levers to the NEUTRAL-LOCK position, and engage the parking brake. 2.
Important: Do not store fuel containing stabilizer/conditioner longer than the duration recommended by the fuel-stabilizer manufacturer. 10. Remove the spark plug(s) and check its condition; refer to Servicing the Spark Plug (page 31). 11. With the spark plug(s) removed from the engine, pour 15 ml (2 tablespoons) of engine oil into the spark-plug hole, and use the starter to crank the engine and distribute the oil inside the cylinder. 12.
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. A spark-plug wire is loose or disconnected. 3. A spark plug is pitted, fouled, or the gap is incorrect. 4. The air cleaner is dirty. 5. Dirt is in the fuel filter.
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 g233852 Electrical Schematic (Rev.
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