Form No. 3448-437 Rev A Z Master® Professional 7500-D Series Riding Mower With 60in or 72in TURBO FORCE® Side Discharge Mower Model No. 72027—Serial No. 400000000 and Up Model No. 72030—Serial No. 400000000 and Up Model No. 72076—Serial No. 409800000 and Up Register at www.Toro.com.
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 The safety-alert symbol (Figure 2) appears both in this manual and on the machine to identify important safety messages that you must follow to avoid accidents. This symbol will appear with the word Danger, Warning, or Caution. Safety ....................................................................... 5 General Safety ................................................... 5 Slope Indicator ................................................... 6 Safety and Instructional Decals .....................
Replacing the Water Separator ........................ 43 Checking the Fuel Lines and Connections.................................................. 43 Electrical System Maintenance ........................... 44 Electrical System Safety ................................... 44 Servicing the Battery......................................... 44 Servicing the Fuses .......................................... 45 Drive System Maintenance .................................. 46 Checking the Seat Belt ..................
Safety This machine has been designed in accordance with ANSI standard B71.4-2017. General Safety This product is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury or death. • Read and understand the contents of this Operator’s Manual before starting the engine. • Keep bystanders and children away. • Do not allow children or untrained people to operate or service the machine.
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. decal58-6520 58-6520 decalbatterysymbols 1. Grease Battery Symbols Some or all of these symbols are on your battery. 1. Explosion hazard 6. Keep bystanders away from the battery. 2. No fire, open flame, or smoking 7. Wear eye protection; explosive gases can cause blindness and other injuries. 3.
decal116-5988 116-5988 1. Parking brake—engaged 2. Parking brake—disengaged decal116-8283 decal107-3069 116-8283 107-3069 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 75 to 81 N∙m (55 to 60 ft-lb). 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 raised and locked position and wear the seat belt.
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.
60-inch side-discharge decks only decal126-9573 126-9573 60 Inch Side Discharge Deck 72-inch side-discharge decks only decal126-9275 126-9275 decal126-9276 126-9276 1. Belt routing 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.
decal135-0328 135-0328 1. Torque the wheel lug nuts to 129 N∙m (95 ft-lb). 2. Read and understand the Operator's Manual before performing any maintenance; check the torque after the first 100 hours, then every 500 hours, thereafter. 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 133-8062 decal135-0679 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 Become familiar with all the controls before you start the engine and operate the machine. Control Panel g228164 Figure 6 Horizon Display Monitor g225792 Figure 5 1. Horizon display monitor 3. Key switch 2. Deck-lift switch 4. Blade-control switch (power takeoff) 1. Screen 2. LED status light 3. Buttons Information Screen Horizon Display Monitor The information screen displays information relative to machine operation; refer to the Software Guide for more information.
Blade-Control Switch (Power Takeoff) • A fast chirp sound indicates critical errors. • A slow chirping sound indicates less critical errors, such as required maintenance or service intervals. The blade-control switch (PTO) engages and disengages power to the mower blades (Figure 5). Note: During startup, the alarm sounds briefly to verify functionality. The LCD indicator appears on the information screen when the PTO switch is disengaged. Refer to the Software Guide for more information.
Specifications Overall Width 60-inch Deck 72-inch Deck Without the deck 141.2 cm (55-5/8 inches) 152.4 cm (60 inches) Deflector up 156 cm (61-3/8 inches) 186.4 cm (73-3/8 inches) Deflector down 184.9 cm (72-13/16 inches) 215.6 cm (84-7/8 inches) 60-inch Deck 72-inch Deck 244.9 cm (96-3/8 inches) 253 cm (99-5/8 inches) Overall Length Roll bar up or down Overall Height Roll bar up 182.4 cm (71-13/16 inches) Roll bar down 129.
Fuel Safety Operation • Fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property. Note: Determine the left and right sides of the machine from the normal operating position. – To prevent a static charge from igniting the fuel, remove the machine from the truck or trailer and refuel it on the ground, away from all vehicles.
Adding Fuel 5. Fill the fuel tank to the bottom of the filler neck (Figure 7). Note: Do not fill the fuel tank completely full. Recommended Fuel The empty space in the tank allows the fuel to expand. The engine runs on clean, fresh diesel fuel with a minimum cetane rating of 40. Purchase fuel in quantities that can be used within 30 days to ensure fuel freshness. Use summer-grade diesel fuel (No. 2-D) at temperatures above -7°C (20°F) and winter-grade diesel fuel (No. 1-D or No.
Using the Rollover Protection System (ROPS) WARNING To avoid injury or death from rollover, keep the roll bar in the fully raised, locked position and use the seat belt. Ensure that the seat is secured to the machine. WARNING There is no rollover protection when the roll bar is in the down position. g225804 Figure 8 • Lower the roll bar only when absolutely necessary. 1. Upper part of the roll bar 4. Rotate the knob out 90° to hold it in the unlatched position.
Using the Safety-Interlock System operate as described below, have an Authorized Service Dealer repair the safety system immediately. 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.
Unlatching the Seat During Operation To unlatch the seat, push the seat latch forward (Figure 12). During Operation Safety General Safety • The owner/operator can prevent and is responsible • g008956 Figure 12 1. Seat latch • 2. Seat • Changing the Seat Suspension The seat is adjustable to provide a smooth and comfortable ride. Position the seat where you are most comfortable. • To adjust it, turn the knob in front either direction to provide the best comfort (Figure 13).
• Before backing up or turning the machine, look – Shut off the engine and remove the key. down and all around for small children. – Wait for all moving parts to stop. • Do not carry children on the machine, even when • Operate the engine only in well-ventilated areas. the blades are not moving. Children could fall off and be seriously injured or prevent you from safely operating the machine.
– Evaluate the site conditions of the day to determine if the slope is safe for machine operation. Use common sense and good judgment when performing this evaluation. Changes in the terrain, such as moisture, can quickly affect the operation of the machine on a slope. • Identify hazards at the base of the slope. Do not operate the machine near drop-offs, ditches, embankments, water, or other hazards. The machine could suddenly roll over if a wheel goes over the edge or the edge collapses.
Operating the Parking Brake Operating the Mower Blade-Control Switch (PTO) Always engage the parking brake when you stop the machine or leave it unattended. The blade-control switch (PTO) starts and stops the mower blades and any powered attachments. Engaging the Parking Brake Engaging the Blade-Control Switch (PTO) Park the machine on a level surface. Note: Engaging the blade-control switch (PTO) with the throttle position at half or less causes excessive wear to the drive belts.
Starting the Engine Shutting Off the Engine Important: Do not engage the starter for more CAUTION 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. Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Note: You may need multiple attempts to start the Always remove the key and engage the parking brake when leaving the machine unattended.
Driving the Machine Using the Motion-Control Levers 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).
Using the Side Discharge 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. Contact with rotating mower blade(s) and thrown debris will cause injury or death. • Never remove the grass deflector from the mower deck because the grass deflector routes material down toward the turf.
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 25). 3. 4.
Adjusting the Flow Baffle Knob This procedure applies only to machines with the flow baffle knob. Certain models have nuts and bolts instead of the flow baffle knob that you can adjust the same way. You can adjust the mower discharge flow for different types of mowing conditions. Position the knob and baffle to give the best quality of cut. 1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake. 2.
Positioning the Flow Baffle The following figures are recommendations 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 fully-rear position.
Operating with the Overheat Sensor The PTO disengages, an alarm sounds, and a bar graph displays the engine temperature when it reaches an overheat condition. The PTO does not engage until the engine has cooled and you manually shut off the PTO and engage it. Note: If the engine-coolant level is below the indicator line on the overflow bottle when the engine is cold, the coolant temperature gauge may not register correctly during operation and/or the audible alarm may not sound if the engine overheats.
Operating Tips 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. Using the Fast Throttle Setting For best mowing and maximum air circulation, operate the engine at the FAST position. Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower deck in uncut grass.
After Operation 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. After Operation Safety 3. Use the drive-wheel release valves to release the hydrostatic drive system, which allows you to push the machine without the running the engine. 4. Rotate each bypass valve counterclockwise 1 turn to release; rotate each bypass valve clockwise to reset the system (Figure 32).
Selecting a Trailer WARNING Loading a machine onto a trailer or truck increases the possibility of tip-over and could cause serious injury or death (Figure 33). • Use only a full-width ramp; do not use individual ramps for each side of the machine. • Do not exceed a 15-degree angle between the ramp and the ground or between the ramp and the trailer or truck. • Ensure that the length of the ramp is at least 4 times as long as the height of the trailer or truck bed to the ground.
1. If using a trailer, connect it to the towing vehicle and connect the safety chains. 2. If applicable, connect the trailer brakes and lights. 3. Lower the ramp, ensuring that the angle between the ramp and the ground does not exceed 15 degrees (Figure 33). 4. Back the machine up the ramp (Figure 34). g028043 Figure 34 1. Back the machine up the ramp. 2. Drive the machine forward down the ramp. 5. Shut off the engine, remove the key, and engage the parking brake. 6.
Maintenance • Check the parking brake operation frequently. Maintenance Safety • Never tamper with safety devices. Check their • If you leave the key in the switch, someone could • Clean grass and debris from the cutting unit, • • • • Adjust and service it as required. proper operation regularly. accidently start the engine and seriously injure you or other bystanders. Remove the key from the switch before you perform any maintenance.
Maintenance Service Interval Maintenance Procedure • • • • Every 400 hours • • • • • Grease the deck-idler pivots. Grease the caster pivots (more often in dirty or dusty conditions). Service the air cleaner (More frequently in extremely dusty or dirty conditions). 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).
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, replace it. Engine Safety Important: Avoid using high-pressure air, which could force dirt through the filter into the intake tract. • Keep your hands, feet, face, other body parts, and clothing away from the muffler and other hot surfaces. Allow engine components to cool before performing maintenance. 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 41. g027477 Figure 42 g031623 Figure 41 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 Fuel Safety (page 17) for a complete list of fuel related precautions.
Electrical System Maintenance 1. Disengage the blade-control switch (PTO), move the motion-control levers to the NEUTRAL-LOCK position, 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. Unlatch the seat and tilt the seat up. 4. Remove the battery as shown in Figure 45. Electrical System Safety • Disconnect the cable from the negative terminal of • the battery before repairing the machine.
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 47 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 50). 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 55 – Use a rag when opening the radiator cap, and open the cap slowly to allow steam to escape. 1. Expansion-tank cap 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. Follow this procedure also whenever you have removed or replaced a brake component. 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 33). 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.
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 61). g235769 Figure 59 1. Spring-loaded idler pulley 3. Spring 2. Square hole in the idler arm for the ratchet 4. Mower belt 8.
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 62). 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 Blade Safety • Inspect the blades periodically for wear or damage. • Use care when checking the blades. Wrap the g006530 blades or wear gloves, and use caution when servicing the blades. Only replace or sharpen the blades; never straighten or weld them. Figure 70 • On multi-bladed machines, take care as rotating 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Crack one blade can cause other blades to rotate.
g014973 g014973 Figure 72 Figure 74 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 73). A.
g000553 Figure 77 1. Blade 3. 2. Balancer Repeat this procedure until the blade is balanced. Installing the Blades 1. Install the bushing through the blade with the bushing flange on the bottom (grass) side of the blade (Figure 78). g295816 Figure 75 1. Sail area of the blade 4. Bushing 2. Blade 3. Flat of the spindle shaft 5. Blade bolt g255205 Figure 78 Sharpening the Blades 1. 1. Bushing Use a file to sharpen the cutting edge at both ends of the blade (Figure 76). 2.
3. Apply copper-based lubricant or grease to the threads of the blade bolt as needed to prevent seizing. Install the blade bolt finger-tight. 4. Place a wrench on the flat of the spindle shaft and torque the blade bolt to 75 to 81 N∙m (55 to 60 ft-lb). Leveling the Mower Deck Note: Ensure that the mower deck is level before matching the height of cut (HOC). 1. Park the machine on a level surface, disengage the blade-control switch, and engage the parking brake. 2.
g232012 Figure 83 1. Single-point height adjustment bolt 2. Front height-of-cut plate mounting bolt g231991 Figure 82 1. Deck adjustment 3. Adjustment nut 14. 2. Jam nut 10. 3. Rear height-of-cut plate mounting bolt Measure the rear blade tip height. Fine-tune the rear adjusters as required; use the single-point adjustment to gain more adjustment. To adjust the single-point system, first loosen the front and rear height-of-cut plate mounting bolts (Figure 83).
the length of the available travel in their slots. This regains some up and down adjustment on each of the 4 deck links. g009042 Figure 85 1. Single-point-adjustment bolt 16. Tighten the 2 bolts at the bottom of the height-of-cut plate (Figure 83). Note: For most conditions, adjust the black blade tip 6.4 mm (1/4 inch) higher than the front. 17. Torque the 2 bolts to 91 to 113 N∙m (67 to 83 ft-lb). 18. Measure until all 4 sides are the correct height.
Replacing the Grass Deflector 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. Remove the locknut, bolt, spring, and spacer holding the deflector to the pivot brackets (Figure 86). 2. Remove the damaged or worn grass deflector (Figure 86). g015594 Figure 86 1.
Cleaning Cleaning the Engine and Exhaust System Area Service Interval: Before each use or daily—Clean the engine and exhaust system area. Important: Do not use water to clean the engine. Use low-pressure compressed air. See the engine owner's manual. 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.
Storage 12. Check the condition of the blades; refer to Servicing the Cutting Blades (page 58). Storage Safety 13. Prepare the machine for storage when non-use occurs over 30 days. Prepare the machine for storage as follows: • Shut off the engine, remove the key, and wait for all moving parts to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it. A.
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
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.
