Form No. 3426-194 Rev D Z Master® Professional 7500-D Series Riding Mower With 60in or 72in TURBO FORCE® Mower Model No. Model No. Model No. Model No. Model No. Model No. Register at www.Toro.com. Original Instructions (EN) 74028—Serial No. 74029—Serial No. 74060—Serial No. 74064—Serial No. 74072—Serial No. 74074—Serial No.
Introduction It is a violation of California Public Resource Code Section 4442 or 4443 to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the engine is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order or the engine is constructed, equipped, and maintained for the prevention of fire. This rotary-blade, riding lawn mower is intended to be used by professional, hired operators.
Contents Fuel System Maintenance ................................... 45 Draining the Fuel Filter/Water Separator ........... 45 Replacing the Water Separator ........................ 45 Checking the Fuel Lines and Connections.................................................. 45 Electrical System Maintenance ........................... 46 Electrical System Safety ................................... 46 Servicing the Battery......................................... 46 Servicing the Fuses .....................
General Safety Safety This machine is capable of amputating hands and feet and of throwing objects. Toro designed and tested this lawn mower to offer reasonably safe service; however, failure to comply with safety instructions may result in injury or death. This machine has been designed in accordance with ANSI B71.4-2017. Safety Alert Symbol • Read, understand, and follow all instructions and warnings in the Operator’s Manual and other training material, on the machine, engine, and attachments.
Slope Indicator g011841 Figure 3 You may copy this page for personal use. 1. The maximum slope you can 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. 2. Align this edge with a vertical surface, a tree, building, fence pole, etc. 3.
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or missing. decal93-7818 93-7818 decalbatterysymbols 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 115 to 149 N∙m (85 to 110 ft-lb). Battery Symbols Some or all of these symbols are on your battery. 1. Explosion hazard 6. Keep bystanders away from the battery. 2.
decal112-9028 112-9028 1. Warning—stay away from moving parts; keep all guards and shields in place. decal116-5988 116-5988 1. Parking brake—engaged 2. Parking brake—disengaged decal107-3069 107-3069 1. Warning—there is no rollover protection when the roll bar is down. 2. To avoid injury or death from a rollover accident, keep the roll bar in the fully raised and locked position and wear the seat belt.
Side Discharge Mowers Only decal126-6464 126-6464 1. Thrown object hazard—keep bystanders away. 3. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts; keep all guards and shields in place. 2. Thrown objects hazard, mower—do not operate without the deflector, discharge cover, or grass collection system in place.
decal126-9276 126-9276 For Models with 183 cm (72-inch) Decks with Side Discharge decal126-9275 126-9275 For Models with 152 cm (60-inch) or 183 cm (72-inch) Decks decal126-9278 126-9278 1. Engine—Off 4. Push the bottom of the button to lower the deck. 2. Engine—On 5. Push the top of the button to raise the deck. 3.
decal126-9279 126-9279 1. Read the instructions before servicing or performing maintenance to the machine. 2. Time interval 7. Check the jackshaft-fluid level. 8. Grease the deck-drive PTO; refer to the Operator's Manual for further instructions. 9. Check the air cleaner. 3. Check the engine-oil level. 4. Check the coolant level; refer to the Operator's Manual for further instructions. 5. Check the tire pressure (2 locations). 10.
decal127-0326 127-0326 1. Read the Operator's Manual. 3. Remove the key and read the Operator's Manual before performing maintenance or servicing the machine. 2. Height of cut decal131-1180 131-1180 1. Read the Operator's Manual. (A) Short, light grass; dry conditions; maximum dispersion; (B) Bagging setting; (C) Tall, dense grass; wet conditions; maximum ground speed decal135-0328 135-0328 1. Torque the wheel lug nuts to 129 N∙m (95 ft-lb). decal127-6662 127-6662 Rear Discharge Mowers Only 1.
Rear Discharge Mowers Only decal135-1432 135-1432 For Models with 152 cm (60-inch) or 183 cm (72-inch) Decks decal135-0664 135-0664 1. Thrown object hazard—keep bystanders away. 2. Cutting/dismemberment hazard of hands and feet—stay away from moving parts; keep all guards and shields in place. decal135-2837 135-2837 1. Read the Operator’s Manual for more information; Use red Toro wet-clutch transmission fluid; do not use green hydraulic fluid. decal133-8062 decal135-0679 133-8062 135-0679 1.
Product Overview g227303 Figure 4 1. Height-of-cut pin 7. Motion-control lever 2. Parking-brake lever 8. Fuel-tank cap 9. Anti-scalp roller 3. Monitor/controls 4. Roll bar 5. Engine screen 10. Skid 11. Caster wheel 6. Audible alarm and power point 12.
Controls Information Screen Become familiar with all the controls before you start the engine and operate the machine. The information screen displays information relative to machine operation; refer to the Software Guide for more information. Control Panel Buttons The multi-functional buttons are located at the bottom of the panel. The icons displayed on the information screen above the buttons indicate the current function.
Deck-Lift Switch Attachments/Accessories Press the switch rearward to raise the deck. 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 authorized Toro distributor or go to www.Toro.com for a list of all approved attachments and accessories. Press the switch forward to lower the deck.
Operation Tread Width of Caster Wheels (Center-to-Center of Tires)—Side Discharge Machines 60-inch Deck 72-inch Deck 101.3 cm (39.9 inches) 120.7 cm (47.5 inches) Note: Determine the left and right sides of the machine from the normal operating position. Before Operation Tread Width of Caster Wheels (Center-to-Center of Tires)—Rear Discharge Machines 60-inch Deck 72-inch Deck 84 cm (33.1 inches) 84 cm (33.
Fuel Safety DANGER In certain conditions during fueling, static electricity can be released causing a spark which can ignite fuel vapors. A fire or explosion from fuel can burn you and others and cause property damage. • Always place fuel containers on the ground away from your vehicle before filling. • Do Not fill fuel containers inside a vehicle or on a truck or trailer bed because interior carpets or plastic truck bed liners may insulate the container and slow the loss of any static charge.
• Fuel filter plugging may be expected for a time • Keep engine and engine area free from after converting to biodiesel blends. accumulation of grass, leaves, excessive grease or oil, and other debris which can accumulate in these areas. • Contact your distributor for more information on biodiesel. • Clean up oil and fuel spills and remove fuel soaked debris. Filling the Fuel Tank • Allow the machine to cool before storing the machine in any enclosure.
Performing Daily Maintenance Before starting the machine each day, perform the Each Use/Daily procedures listed in Maintenance (page 37). Breaking in a New Machine New engines take time to develop full power. Mower decks and drive systems have higher friction when new, placing additional load on the engine. Allow 40 to 50 hours of break-in time for new machines to develop full power and best performance.
Using the Safety-Interlock System 1. Sit on the seat, engage the parking brake, and move the blade-control switch (PTO) to the ON position. Try starting the engine; the engine should not start. 2. Sit on the seat, engage the parking brake, and move the blade-control switch (PTO) to the OFF position. Move either motion-control lever out of the NEUTRAL-LOCK position. Try starting the engine; the engine should not start. Repeat for the other control lever. 3.
Unlatching the Seat During Operation To unlatch the seat, push the seat latch forward (Figure 12). During Operation Safety General Safety The operator must use their full attention when operating the machine. Do Not engage in any activity that causes distractions; otherwise, injury or property damage may occur. WARNING g008956 Operating engine parts, especially the muffler, become extremely hot. Severe burns can occur on contact and debris, such as leaves, grass, brush, etc. can catch fire.
• Be sure all drives are in neutral and parking brake • • • • is engaged before starting engine. Use seat belts with the roll bar in the raised and locked position. Start the engine carefully according to instructions with feet well away from the blades. Never operate the mower with damaged guards, shields, or covers. Always have safety shields, guards, switches and other devices in place and in proper working condition. Keep clear of the discharge opening at all times.
Rollover Protection System (ROPS) Safety distance (twice the width of the machine) between the machine and any hazard. Use a walk behind machine or a hand trimmer to mow the grass in these areas. A Rollover Protection System (roll bar) is installed on the machine. WARNING There is no rollover protection when the roll bar is down. Wheels dropping over edges, ditches, steep banks, or water can cause rollovers, which may result in serious injury, death or drowning. • Do Not remove the ROPS.
Disengaging the Parking Brake Pre-Start Fill fuel tank on level ground. See Fuel Recommendations in the Specifications section for additional diesel information. Do Not overfill fuel tank. Fill the fuel tank to the bottom of the filler neck. The empty space in the tank allows fuel to expand. Overfilling may result in fuel leakage or damage to the engine or emission system. Make sure you understand the controls, their locations, their functions, and their safety requirements.
Operating the Mower Starting the Engine Blade-Control Switch (PTO) Important: Do not engage 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. The blade-control switch (PTO) starts and stops the mower blades and any powered attachments.
Shutting Off the Engine Using the Motion-Control Levers CAUTION Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Always remove the key and engage the parking brake when leaving the machine unattended. g004532 Figure 21 1. Motion-control lever—NEUTRAL-LOCK position 4. Backward 2. Center, unlocked position 5. Front of machine 3.
Driving the Machine The drive wheels turn independently, powered by hydraulic motors on each axle. You can turn 1 side in reverse while you turn the other forward, causing the machine to spin rather than turn. This greatly improves the machine maneuverability but may require some time for you to adapt to how it moves. 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.
Driving Backward Using the Side Discharge 1. Move the levers to the center, unlocked position. 2. To go backward, slowly pull the motion-control levers rearward (Figure 23). Machines with Side Discharge Only The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. DANGER Without a grass deflector, discharge cover, or a complete grass-catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris.
Adjusting the Height of Cut Adjusting the Anti-Scalp Rollers Adjust the height of cut 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. With the engine running, push the deck-lift switch rearward until the mower deck is fully raised, and release the switch immediately. 2. Rotate the height-of-cut pin until the roll pin in it lines up with the slots in the holes in the height-of-cut bracket and remove it (Figure 24). 3. 4.
g227782 Figure 26 Side Discharge Machines 1. Bolt 4. Spacer 2. Bushing 5. Flange nut g227783 Figure 28 Rear Discharge Machines 3. Anti-scalp roller 1. Bolt 3. Anti-scalp roller 2. Bushing 4. Flange nut 5. For side discharge machines, torque the flange nut to 68 to 75 N∙m (50 to 55 ft-lb). 6. For rear discharge machines, torque the flange nut to 41 to 47 N∙m (30 to 35 ft-lb).
6. Position B If the cam locks do not lock the baffle into place or it is too tight, loosen the lever and then rotate the cam lock. Use this position when bagging. Always align it with the blower opening. Note: Adjust the cam lock until the desired locking pressure is achieved. g027727 Figure 29 g005833 Figure 31 Positioning the Flow Baffle Position C For Machines with Side Discharge This is the full open position.
Adjusting the Skids Operating Tips For Models with Rear Discharge Using the Fast Throttle Setting Mount the skids in the lower position when operating at heights of cut greater than 51 mm (2 inches) and in a higher position when operating at heights of cut lower than 51 mm (2 inches). For best mowing and maximum air circulation, operate the engine at the FAST position.
After Operation drop onto your lawn. To avoid this, move onto a previously cut area with the blades engaged or you can disengage the mower deck while moving forward. After Operation Safety Keeping the Underside of the Mower Deck Clean General Safety • Park machine on level ground, disengage drives, Clean clippings and dirt from the underside of the mower deck after each use. If grass and dirt build up inside the mower deck, cutting quality will eventually become unsatisfactory.
Using the Drive-Wheel Release Valves Transporting Transporting the Machine Use the drive-wheel release valves to release the hydrostatic drive system, which allows you to push the machine without the running the engine. Rotate each bypass valve counterclockwise 1 turn to release; rotate each bypass valve clockwise to reset system (Figure 34). Use a heavy-duty trailer or truck to transport the machine. Ensure that the trailer or truck has all necessary lighting and marking as required by law.
g028043 Figure 36 1. Back up ramps 2. Drive forward down ramps Important: Do not use narrow individual ramps for each side of the machine. Ensure the ramp is long enough so that the angle with the ground does not exceed 15 degrees (Figure 37). On flat ground, this requires a ramp to be at least four times (4X) as long as the height of the trailer or truck bed to the ground. A steeper angle may cause mower components to get caught as the unit moves from the ramp to the trailer or truck.
and loss of control. Reduce the towed weight and slow down. • Stopping distance increases with the weight of the towed load. Travel slowly and allow extra distance to stop. • Make wide turns to keep the attachment clear of the machine.
Maintenance WARNING Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Fluid accidentally injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result. Maintenance Safety WARNING While maintenance or adjustments are being made, someone could start the engine. Accidental starting of the engine could seriously injure you or other bystanders.
• Carefully release pressure from components with WARNING stored energy. Contact with moving parts or hot surfaces may cause personal injury. • Keep hands and feet away from moving parts. If possible, Do Not make adjustments with the engine running. If the maintenance or adjustment procedure require the engine to be running and components moving, use extreme caution. Keep your fingers, hands, and clothing clear of rotating components and hot surfaces.
Maintenance Service Interval Monthly Yearly Maintenance Procedure • Check the battery charge. • • • • Grease the deck drive PTO. Repack the caster-wheel bearings (more often in dirty or dusty conditions). Greasing the caster-wheel hubs. If you operate the machine less than 200 hours, change the engine oil and filter. Important: Refer to your engine owner's manual for additional maintenance procedures.
Lubrication Greasing the Machine Service Interval: Every 400 hours/Yearly (whichever comes first)—Grease the deck-idler pivots. Yearly—Grease the deck drive PTO. Grease more frequently when operating conditions are extremely dusty or sandy. Grease Type: No. 2 lithium or molybdenum grease 1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake. 2.
Greasing the Caster Pivots 6. Service Interval: Every 400 hours/Yearly (whichever comes first) (more often in dirty or dusty conditions). Yearly—Repack the caster-wheel bearings (more often in dirty or dusty conditions). 1. Park the machine on a level surface, disengage the blade-control switch, 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.
Engine Maintenance Servicing the Air Cleaner Note: If the foam gasket in the cover is damaged, Engine Safety replace it. • Shut off the engine before checking the oil or Important: Avoid using high-pressure air, which could force dirt through the filter into the intake tract. adding oil to the crankcase. Keep your hands, feet, face, clothing, and other body parts away the muffler and other hot surfaces. • Important: Do not clean the used filter to avoid damaging the filter media.
Servicing the Engine Oil 3. Open the hood. Service Interval: Before each use or daily After the first 200 hours—Change the engine oil and filter. Every 200 hours—Change the engine oil and filter if not using Toro Premium Engine Oil, but any oil meeting API classification CJ-4 or higher or as stated in Engine-Oil Specifications. Every 400 hours—Change the engine oil and filter if using Toro Premium Engine Oil (API classification CK-4 or higher) (more often in dirty or dusty conditions).
Changing the Engine Oil and Filter If possible, run the engine just before changing the oil because warm oil flows better and carries more contaminants than cold oil. 1. Park the machine on a level surface, disengage the blade-control switch (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. Open the hood. 4. Change the engine oil as shown in Figure 43. g027477 Figure 44 g031623 Figure 43 6.
Replacing the Water Separator Fuel System Maintenance Service Interval: Every 400 hours—Replace the fuel-filter canister for the water separator (more often in dirty and dusty conditions). 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. Refer to Adding Fuel (page 18) for a complete list of fuel related precautions.
Electrical System Maintenance 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. Electrical System Safety • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. • Disconnect the battery before repairing the machine. Disconnect the negative terminal first and the positive last. Connect the positive terminal first and the negative last.
Installing the Battery Note: Do not run the machine with the battery disconnected, electrical damage may occur. Note: Position the battery in the tray with the terminal posts opposite from the hydraulic tank. g000960 Figure 49 1. Positive battery post 3. Red (+) charger lead 2. Negative battery post 4. Black (-) charger lead Servicing the Fuses The electrical system is protected by fuses. It requires no maintenance, however, if a fuse blows check component/circuit for malfunction or short.
Drive System Maintenance 9. Align the levers in the front-to-rear position by bringing the levers together to the NEUTRAL position, and slide them until they are aligned, then tighten the bolts (Figure 52). Checking the Seat Belt Service Interval: Before each use or daily Inspect the seat belt for wear, cuts, and proper operation of the retractor and buckle. Replace the seat belt if it is damaged. Adjusting the Tracking 1. 2. 3. 4. 5. 6. 7. 8. Disengage the blade-control switch (PTO).
Adjusting the Caster-Pivot Bearing Checking the Tire Pressure Service Interval: Every 50 hours/Monthly (whichever comes first) Service Interval: Every 500 hours/Yearly (whichever comes first) Rear tire air pressure specification: 124 kPa (18 psi). 1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake. 2. Low tire pressure decreases machine side-hill stability. This could cause a rollover, which may result in personal injury or death.
Changing the Gearbox Oil Servicing the Gearbox Service Interval: After the first 200 hours Checking the Gearbox-Oil Level Every 400 hours Service Interval: Every 50 hours If the oil becomes contaminated, contact your Toro Distributor because the system must be flushed. Contaminated oil looks milky or black when compared to clean oil. Use SAE 75W-90 synthetic gear lube. 1. Park the machine on a level surface and engage the parking brake. 2. Lower the mower deck to the 25 mm (1 inch) height of cut.
Cooling System Maintenance Cooling System Safety • Swallowing engine coolant can cause poisoning; keep out of reach from children and pets. • Discharge of hot, pressurized coolant or touching a hot radiator and surrounding parts can cause severe burns. – Always allow the engine to cool at least 15 minutes before removing the radiator cap. g227787 Figure 57 1. Expansion-tank cap – Use a rag when opening the radiator cap, and open the cap slowly to allow steam to escape. 3. Add line 2.
Note: If debris remains, repeat until clean. 9. 7. Lower the hood. 8. Start the engine to ensure that the fan functions properly. As air purges from the engine block and the coolant level drops, add additional coolant to the radiator. Changing the Engine Coolant 10. Park the machine on a level surface, disengage the blade-control switch, 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.
Brake Maintenance Adjusting the Parking Brake Service Interval: After the first 100 hours Every 400 hours Check to ensure that parking brake is adjusted properly. This procedure must be followed after the first 100 hours or when a brake component has been removed or replaced. 1. Park the machine on a level surface, disengage the blade-control switch, 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.
13. Belt Maintenance Repeat steps 10 through 12 until a visible gap is achieved and the wheel hub rotates freely. Repeat this procedure for the other side. Inspecting the Belts Note: The brake should fully disengage when the brake is in the released position. 14. Rotate the drive wheel release handle to the operating position; refer to Using the Drive-Wheel Release Valves (page 34). 15. Install the rear tires and torque the lug nuts to 115 to 142 N∙m (85 to 105 ft-lb). 16. Remove the jack stands.
g235768 Figure 61 Rear Discharge Machine Shown g027730 Figure 63 1. Spring 3. Spring-loaded idler pulley 2. Square hole in the idler arm for the ratchet 4. Mower belt Checking the Alternator-Belt Tension Service Interval: Every 100 hours 1. Apply 44 N (10 lb) of force to the alternator belt, midway between the pulleys. 2. If the deflection is not 10 mm (3/8 inch), loosen the alternator mounting bolts (Figure 64). g235769 Figure 62 Side Discharge Machine Shown 1. Spring-loaded idler pulley 3.
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. Park the machine on a level surface, disengage the blade-control switch (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. Loosen the bolts and flange nuts installed in the levers (Figure 65). 4.
4. Raise the rear of the machine up and support it with jack stands (or equivalent support) just high enough to allow the drive wheels to turn freely. 5. Remove the electrical connection from the seat safety switch, located under the bottom cushion of the seat. Note: The wheels should stop turning or slightly creep in reverse. Note: The switch is a part of the seat assembly. 6. Temporarily install a jumper wire across the terminals in the connector of the main wire harness. 7.
Hydraulic System Maintenance 2. Note: Run the engine at the lowest possible rpm to purge any air in the system. Hydraulic System Safety Important: Do not engage the PTO. • Seek immediate medical attention if fluid is injected • • • • Move the motion-control levers to the NEUTRAL-LOCK position and start the engine. into skin. Injected fluid must be surgically removed within a few hours by a doctor.
8. 9. Replace the dipstick and thread the fill cap finger-tight onto the filler neck. Check all hoses and fittings for leaks. Changing the Hydraulic Fluid and Filter Service Interval: After the first 200 hours—Change the hydraulic fluid and filter. Every 400 hours—Change the hydraulic fluid and filter if using Mobil® 424 hydraulic fluid. Every 800 hours—Change the hydraulic fluid and filter if using Toro Premium Transmission/Hydraulic Tractor Fluid. 1.
Mower Deck Maintenance Servicing the Cutting Blades To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, you may want to keep extra blades on hand. g006530 Figure 73 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.
g014973 g014973 Figure 75 Figure 77 1. Blade (in position for measuring) 1. Opposite blade edge (in position for measuring) 2. Level surface 3. Measured distance between blade and the surface (A) 2. Level surface 3. Second measured distance between blade and surface (B) 4. Rotate the same blade 180 degrees so that the opposing cutting edge is now in the same position (Figure 76). A.
g004536 g004536 Figure 78 1. Sail area of the blade 2. Blade Figure 79 Left and Center Spindle Shown 3. Curved washer 4. Blade bolt 1. Sail area of the blade 2. Blade 3. Curved washer 4. Blade bolt Rear-Discharge Machines Important: The right blade on this mower deck is counter-rotating and uses a left-threaded blade bolt. Replace a blade if it hits an object, if the blade is out of balance, or if the blade is bent.
Sharpening the Blades 1. bolt. Use Figure 80 for the correct placement of the mower blades. 1. Install the left and center blades, curved washers, and blade bolts to the spindle shafts (Figure 79 and Figure 80). Use a file to sharpen the cutting edge at both ends of the blade (Figure 81). Note: Maintain the original angle. Note: The blade retains its balance if the same amount of material is removed from both cutting edges.
7. Raise the discharge deflector (side discharge mowers only). 8. Measure from the level surface to the front tip of the center blade (Figure 84). Note: The measurement should read 7.6 mm (3 inches). In most conditions, the back tips on the side blades should be adjusted as follows: • Side Discharge Machines: 6.4 mm (1/4 inch) higher than the front. • Rear Discharge Machines: should be level with the front. g231991 Figure 85 1. Deck adjustment 3. Adjustment nut 2. Jam nut 10.
adjustment bolt by rotating it counterclockwise (Figure 88). 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. This regains some up and down adjustment on each of the 4 deck links. g232012 Figure 86 1. Single-point height adjustment bolt 3. Rear height-of-cut plate mounting bolt 2. Front height-of-cut plate mounting bolt g009042 14.
Replacing the Grass Deflector position and ensure that it rotates into the full down position. Side-Discharge Machines Only WARNING 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. Never operate the machine unless you install a mulch plate, discharge deflector, or grass collection system. 1.
Cleaning Storage Cleaning the Engine and Exhaust System Area Storage Safety • Shut off the engine, remove the key, wait for all moving parts to stop, and allow the machine to cool before storing it. Service Interval: Before each use or daily—Clean the engine and exhaust system area. • Do not store the machine or fuel near flames or drain the fuel indoors. Important: Do not use water to clean the engine. • Remove the key and store it in a safe place out Use low-pressure compressed air.
13. Prepare the machine for storage when non-use occurs over 30 days. Prepare the machine for storage as follows: A. Add a petroleum-based stabilizer/conditioner to fuel in the tank. Follow mixing instructions from the stabilizer manufacturer. Do not use an alcohol-based stabilizer (ethanol or methanol). Note: A fuel stabilizer/conditioner is most effective when mixed with fresh fuel and used at all times. B. Run the engine to distribute conditioned fuel through the fuel system for 5 minutes. C.
Troubleshooting Problem The starter does not crank. The engine does not start, starts hard, or fails to keep running. Possible Cause 1. The blade-control switch is engaged. 1. Disengage the blade-control switch. 2. The parking brake is disengaged. 3. The motion-control levers are not in the NEUTRAL-LOCK position. 4. You are not sitting in the operator’s seat. 5. The battery is dead. 6. The electrical connections are corroded or loose. 7. A fuse is blown. 8. A relay or switch is damaged. 2.
Problem The machine does not drive. The machine vibrates abnormally. The cutting height is uneven. Possible Cause 1. The bypass valves are not closed tight. 1. Tighten the bypass valves. 2. The pump belt is worn, loose, or broken. 3. The pump belt is off a pulley. 4. The idler spring is broken or missing. 5. The hydraulic fluid level is low or too hot. 2. Change the belt. 3. Change the belt. 4. Replace the spring. 5. Add hydraulic fluid to the reservoirs or let it cool down. 1.
Electrical Schematic—Machine with Horizon Display Monitor (Rev.
J02 B+ @ BATTERY 1 CLAMP J01 OIL PRESSURE 1 SWITCH P03 STARTER A B B+ C RED RED RED RED BROWN YELLOW ORANGE WHITE BLUE BROWN RED YELLOW VIOLET SP06 SP02 2 1 P04 AIR FILTER SW RED/WHITE GRAY/BROWN P02 7 RED 26 GREEN 25 BLACK 8 RED 37 BLUE 52 BLACK 39 VIOLET 54 ORANGE 38 BLACK 11 BLUE 51 BROWN 20 BLUE 19 YELLOW 29 50 28 60 59 YELLOW 34 12 30 48 18 47 17 33 16 4 5 SP12 ALTERNATOR J03 1 P05 1 2 B IG YELLOW YELLOW VIOLET VIOLET WHITE P24 1 2 3 4 5 6 7 8 9 10 11 12 ORANGE 5VS PRAIL ANALOG GND 5VS
BATTERY CLAMP J02 1 B+ A STARTER P03 B B+ C OIL TEMP P21 1 SENSOR 2 ENGINE SPEED P13 1 2 SENSOR 6 5 4 RACK P02 ACT 3 2 1 RED RED/GREEN RED/GREEN BLACK BLACK BLACK SP11 J03 BLACK RED/GREEN ALTERNATOR 1 P05 1 2 B IG L BLUE/GREEN RED/GREEN BLACK ORANGE SP2 SP1 SP9 BLUE/RED BLACK TO CONNECTOR P06 ON HARNESS 1 2 1 1 2 P07 1 2 4 9 5 3 8 6 12 7 10 11 J01 P04 P06 OIL FUEL AIR FILTER PRESSURE PUMP SW SW BLACK RED/WHITE SP7 P09 SP10 BLUE/RED BLUE/YELLOW SP6 FLY BACK DIODE P16 A B 1 2 3
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.
