Toro 31598N Operator's Manual
Toro 31598N Operator's Manual

Toro 31598N Operator's Manual

Rotary mower
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Original Instructions (EN)
Groundsmaster
Rotary Mower
Model No. 31598N—Serial No. 315000001 and Up
Model No. 31599N—Serial No. 315000001 and Up
Form No. 3391-812 Rev A
®
5900 and 5910
*3391-812* A

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Summary of Contents for Toro 31598N

  • Page 1 Form No. 3391-812 Rev A Groundsmaster ® 5900 and 5910 Rotary Mower Model No. 31598N—Serial No. 315000001 and Up Model No. 31599N—Serial No. 315000001 and Up *3391-812* A Register at www.Toro.com. Original Instructions (EN)
  • Page 2 Genuine Toro spark arresters are approved by the USDA Forestry Service. Important: This engine is equipped with a spark arrester muffler.
  • Page 3: Table Of Contents

    Jump Starting / Battery Charging......48 Safety ................4 Recalibrate Traction Pedal ........48 Safe Operating Practices........... 4 Drive System Maintenance .........49 Toro Mower Safety ..........6 Adjusting the Traction Pedal Angle ......49 Safety and Instructional Decals ......... 7 Checking the Planetary Drive Gear/Brake Setup ................15 Oil ..............49...
  • Page 4: Safety

    Safety • Thoroughly inspect the area where the equipment is to be used and remove all objects which may be thrown by the machine. This machine has been designed in accordance with • Replace faulty silencers/mufflers. ANSI B71.4-2012. • Before using, always visually inspect to see that the Improper use or maintenance by the operator or blades, blade bolts, and cutting assembly are not worn owner can result in injury.
  • Page 5: Maintenance And Storage

    start the engine from the operators position. Use seat – before making height adjustment unless adjustment belts, if provided. can be made from the operators position. • Remember there is no such thing as a safe slope. Travel • Reduce the throttle setting before stopping engine and, if on grass slopes requires particular care.
  • Page 6: Toro Mower Safety

    • Turn off the blades when not mowing. The following list contains safety information specific to Toro products or other safety information that you must know that • For operating environments exceeding 43 degrees C (110 is not included in the CEN, ISO, or ANSI standards.
  • Page 7: Safety And Instructional Decals

    • eyes, and clothing when working with a battery. To make sure of optimum performance and continued safety certification of the machine, use only genuine Toro • Battery gases can explode. Keep cigarettes, sparks, and replacement parts and accessories. Replacement parts flames away from the battery.
  • Page 8 114-0135 1. Raise cutting units—left 3. Raise cutting units—right 2. Raise cutting units—center 115-5459 1. Electric shock hazard—do not remove cover; keep cover in place. 106-6754 1. Warning—do not touch the hot surface. 2. Cutting/dismemberment hazard, fan and entanglement hazard, belt—stay away from moving parts. 93-7818 114-0844 1.
  • Page 9 93-6674 1. Crushing hazard, hand—read the instructions before servicing or performing maintenance. 106-6755 1. Engine coolant under 3. Warning—do not touch the pressure. hot surface. 2. Explosion hazard—read 4. Warning—read the the Operator's Manual. Operator's Manual. 93-6687 1. Do not step here. 120-6604 1.
  • Page 10 114-0974 1. Belt routing 114-0133 1. Headlights 7. Traction assist—engage 2. On 8. Traction assist—disengage 3. Off 9. Lower cutting units—left 4. Headlight switch location 10. Lower cutting units—center 5. Cruise control—engage 11. Lower cutting units—right 114-4883 6. Cruise control—disengage 1.
  • Page 11 117–2754 1. Warning—read the Operator's Manual. 2. Warning—do not operate this machine unless you are trained. 3. Warning—wear the seat belt when seated in the operator's position. 4. Warning—wear hearing protection. 5. Thrown object hazard—keep bystanders a safe distance from the machine. 6.
  • Page 12 115-5489 (Model 31599N only) 1. Warning—when the cab windows are open wear hearing protection. Battery Symbols 2. Close the rear window before attempting to open the hood. Some or all of these symbols are on your battery 1. Explosion hazard 6.
  • Page 13 130–2449 1. Read the Operator’s Manual for information on maintenance. 125–5263 114-0846 1. Read the Operator’s Manual for information on fuses. 1. Read the Operators Manual; to start the engine, move the traction pedal to Neutral, apply the brake, move the throttle switch to low, turn the ignition key to Preheat.
  • Page 14 130-0458 1. Read the Operator's 5. Head lights—25A Manual for more information on fuses 2. Electrical power 6. Condenser fan and A/C accessory—15A clutch—30A 3. Dome light—15A 7. Fan—15A 4. Windshield wiper 8. Work light—15A fluid—15A...
  • Page 15: Setup

    Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description Qty. – No parts required Remove the side deck straps and brace Deck cover R.H. Deck cover L.H. Lower the front deck winglets V-Belt –...
  • Page 16 3). Leave the eccentrics positioned between the deck mounts. 3. Lower the winglet to the operating position. Figure 4 1. Winglet 4. Eccentric 2. Hinge pin 5. Lower hole 3. Bolt Figure 3 7. Install the winglet belts as follows: 1.
  • Page 17: Leveling The Front Center Deck

    Note: Make sure to slide the cover under the front center deck cover tabs before inserting it onto the mounting hooks and post. 9. Repeat the procedure on the other winglet. Leveling the Winglet Decks to the Front Center Deck No Parts Required Procedure Level the winglet decks to the front deck as follows:...
  • Page 18: Checking The Tire Pressure

    Checking the Fluid Levels No Parts Required Procedure 1. Check the engine oil level before starting the engine, Figure 8 refer to Checking the Engine Oil Level in Engine Maintenance. 1. Eccentric notch 2. Check the hydraulic fluid level before starting the engine, refer to Checking the Hydraulic Fluid Level in •...
  • Page 19: Product Overview

    Horn Button Product Overview Press the horn button (Figure 10) to activate the horn. Controls Parking Brake Latch Note: Determine the left and right sides of the machine from the normal operating position. The knob on the left side of the console actuates the parking brake lock (Figure 10).
  • Page 20: Light Switch

    Light Switch Note: The decks will not lower while in the Hi speed range. and the decks will not raise or lower if the operator is out of Press the lower edge of the switch (Figure 11) to turn on the the seat when the engine is running.
  • Page 21 pressure. The proper adjustment is attained when the weight Wind Shield Latch gauge is in the green region. Lift up on latches to open the wind shield (Figure 14). Press in on latch to lock wind shield in open position. Pull out and Fore and Aft Adjusting Lever down on latch to close and secure wind shield.
  • Page 22 Engine Coolant Temperature Indicator This display indicates the engine coolant temperature (Figure 16). Parking Brake Indicator This display indicates that the parking brake is actuated (Figure 16). PTO Indicator This display indicates (Figure 16) when the PTO in engaged. Fan Reverse Indicator This display indicates (Figure 16) when the fan is operating...
  • Page 23 H / L (Hi/Low) Speed Range Indicator Note: When service has been performed, make sure to reset the indicator. This display indicates which speed range has been selected (Figure 16). Resetting the Service Interval Indicator 1. Press and hold the far right button on the Info Center. Air Intake Heater Indicator 2.
  • Page 24 Check Engine -If the driver receives a Check Engine To Set Cruise Control indication for a maintenance fault, the driver should take the Increase ground speed machine to a service center as soon as possible. To Float Deck Lower decks To Lower Deck 1.
  • Page 25 5. Engine running 6. Must be seated or set parking brake 7. Turn key switch off then on 8. Wait For Teach (Traction Pedal Calibration) Turn key switch off then on For Traction 1. Fix critical sensor error 2. Fix critical voltage error 3.
  • Page 26: Specifications

    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 Distributor or go to www.Toro.com for a list of all approved attachments and accessories.
  • Page 27: Operation

    Operation WARNING Fuel is harmful or fatal if swallowed. Long-term Note: Determine the left and right sides of the machine exposure to vapors can cause serious injury and from the normal operating position. illness. • Avoid prolonged breathing of vapors. CAUTION •...
  • Page 28: Checking The Tire Pressure

    Check the air pressure in all the tires before operating DANGER the machine. 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. • Fill the fuel tank outdoors, in an open area, when the engine is cold.
  • Page 29 Figure 23 1. Castor arm height of cut 3. Castor fork height of cut Figure 24 mounting holes spacers 2. Castor fork height of cut 1. Tensioning cap 4. Top axle mounting hole mounting holes 2. Spacers (4) 5. Castor wheel 3.
  • Page 30 Figure 28 Figure 26 Note: When operating at 64 mm (2-1/2 inch) height Note: When mowing at height-of-cuts below 64 mm of cut or higher, the axle bolt should be installed in (2-1/2 inch), move the skids, gage wheels and rollers the bottom castor fork hole to prevent grass buildup to the highest holes.
  • Page 31: Adjusting The Skids

    Adjusting the Skids The skids should be mounted in the lower position when operating at heights of cut greater than 64 mm (2-1/2 inch) and in the higher position when operating at heights of cut lower than 64 mm (2-1/2 inch). Note: When the skids become worn, you can switch the skid to the opposite sides of the mower, flipping them over.
  • Page 32: Checking The Mismatch Between Cutting Units

    Checking the Mismatch corresponding outside edge of front cutting unit and compare. Between Cutting Units Note: The side cutting unit castor wheels should Due to differences in grass conditions and the counterbalance remain on the ground with counterbalance applied. setting of the traction unit, it is advised that grass be cut and Note: If adjustments need to be made to match the appearance checked before formal cutting is started.
  • Page 33: Adjusting The Mirrors

    Aiming the Headlights 1. Loosen the mounting nuts and position each headlight so that it points straight ahead. Tighten the mounting nut just enough to hold the headlight in position. 2. Place a flat piece of sheet metal over the face of the headlight.
  • Page 34: Checking The Interlock Switches

    Checking the Interlock Switches CAUTION If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. • Do not tamper with the interlock switches. • Check the operation of the interlock switches daily and replace any damaged switches before operating the machine.
  • Page 35: Jacking Points

    Jacking Points Tie Downs • • On the front of the machine on the frame on the inside Under the front of the operator's platform (2 places) of each drive tire (Figure 38). (Figure 40). Figure 38 Figure 40 1. Front jacking point (2) 1.
  • Page 36: Operating Characteristics

    Operating Characteristics Before stopping the engine, disengage all controls and move the throttle to the slowest position. Moving the throttle to the Practice driving the machine because it has a hydrostatic slowest position reduces high engine speed (RPM), noise, and transmission and its characteristics are different than many vibration.
  • Page 37: Operating Tips

    Operating Tips Select the Proper Height-of-Cut Setting to Suit Conditions Remove approximately 25 mm (1 inch) or no more than 1/3 of the grass blade when cutting. In exceptionally lush and dense grass, you may have to raise the height-of-cut to the next setting.
  • Page 38: Maintenance

    Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Maintenance Procedure Interval • Torque the wheel lug nuts. • Check the alternator belt tension. After the first 10 hours •...
  • Page 39: Service Interval Chart

    CAUTION If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the ignition before you do any maintenance. Service Interval Chart Figure 46 Premaintenance Procedures Inner Wing Deck Covers Removal...
  • Page 40: Lubrication

    Lubrication Greasing the Bearings and Bushings Service Interval: Before each use or daily—Lubricate castor arm bushings. Every 50 hours—Lubricate all grease fittings. The machine has grease fittings that must be lubricated Figure 48 regularly with No. 2 General Purpose Lithium Base Grease. 1.
  • Page 41 Figure 50 Figure 51 Figure 53 Front Cutting Unit • Castor fork shaft bushings (2) (Figure • Spindle shaft bearings (5) (located on spindle housing) (Figure • Idler arm pivot bushings (3) (located on the idler pivot shaft) (Figure Figure 52...
  • Page 42 Figure 54 Figure 56 Front Lift Assemblies • Lift arm bushings (2) (Figure Side Lift Assemblies (per side) • Lift arm ball joints (2) (Figure • Main lift arm bushings (3) (Figure • Front Deck Lift cylinder pivots (2) (Figure •...
  • Page 43: Engine Maintenance

    Engine Maintenance cleaning process prevents debris from migrating into the intake when the primary filter is removed. 2. Remove the primary filter (Figure 59). Cleaning of the Air Cleaner Maintenance used element is not recommended due to the possibility • Check the air cleaner body for damage which could of damage to the filter media.
  • Page 44: Servicing The Engine Oil

    Preferred oil: SAE 15W-40 (above 0°F) • Alternate oil: SAE 10W-30 (below 23°F) Toro Premium Engine Oil is available from your distributor in either 15W-40 or 10W-30 viscosity. See the parts catalog for part numbers. Also, refer to the Engine Operator's Manual, included with the machine, for further recommendations.
  • Page 45: Adjusting The Valve Clearance

    Fuel System Maintenance Servicing the Fuel System DANGER Under certain conditions, diesel fuel and fuel vapors are highly flammable and explosive. A fire or explosion from fuel can burn you and others and Figure 63 can cause property damage. 1. Engine oil drain plug •...
  • Page 46: Replacing The Fuel Filter

    Replacing the Fuel Filter 2. Open the drain plug and operate the pump to drain off contaminates (Figure 64). Service Interval: Every 500 hours—Replace the fuel filter element 1. Clean the area around the fuel filter head (Figure 65). Figure 64 Figure 65 1.
  • Page 47: Electrical System Maintenance

    (Figure 71). A maximum of 10 amps is available from either location. Contact your local Toro distributor for assistance. Note: Make sure the key is off and removed from the switch before removing fuses. Fuses The traction unit fuses...
  • Page 48: Battery Care

    (Figure 68). Recalibrate Traction Pedal Service Interval: Every 1,000 hours—Recalibrate traction pedal Contact your local Toro distributor or refer to the Toro Service Manual for the assistance. Figure 71 1. Cab fuse box 2. Fuses...
  • Page 49: Drive System Maintenance

    Drive System Maintenance Adjusting the Traction Pedal Angle The traction pedal operating angle can be adjusted for g019500 operator comfort. Figure 73 1. Loosen the two nuts and bolts securing the left side of 1. Check/drain plug (3 o'clock position) the traction pedal to the bracket (Figure 72).
  • Page 50: Checking The Rear Wheel Toe-In

    g021 156 Figure 75 Figure 77 1. Drain plug 2. Brake housing 1. Center to center distance 2. Tie rod clamps 4. When all of the oil has drained from both locations, re-install the plug in the brake housing. 2. To adjust, loosen the clamps at both ends of the tie rods (Figure 77).
  • Page 51: Cooling System Maintenance

    Cooling System DANGER Maintenance The rotating fan and drive belt can cause personal injury. • Do not operate the machine without the covers CAUTION in place. Discharge of hot pressurized coolant or touching • Keep fingers, hands and clothing clear of hot radiator and surrounding parts can cause severe rotating fan and drive belt.
  • Page 52: Servicing The Engine Cooling System

    Servicing the Engine Cooling Brake Maintenance System Adjusting the Service Brakes Service Interval: Every 100 hours—Inspect the cooling system hoses. Adjust the service brakes when there is more than 50 mm (2 Every 2 years—Flush the cooling system and replace inches) of “free travel”...
  • Page 53: Belt Maintenance

    Belt Maintenance squealing when belt is rotating, blades slipping when cutting grass, frayed edges, burn marks and cracks. Replace the belt if any of these conditions are evident. Servicing the Alternator Belt Front Cutting Unit Service Interval: After the first 10 hours—Check the alternator belt tension.
  • Page 54: Side Cutting Decks

    Figure 83 1. Hydraulic motor 2. Mounting bolts 5. Remove the old belt from around the spindle pulleys Figure 85 and idler pulley. 1. Idler pulleys 6. Route the new belt around the spindle pulleys and idler pulley assembly as shown in Figure 4.
  • Page 55: Hydraulic System Maintenance

    (Figure 88). or Toro distributor for part numbers.) 3. Clean the area around the filler neck and cap of the Alternate fluids: If the Toro fluid is not available, other fluids hydraulic tank (Figure 88). Remove the cap from the may be used provided they meet all the following material filler neck.
  • Page 56: Changing The Hydraulic Fluid And Filters

    Use Toro replacement filters (Part No. 86–6110 for the left throughout the system. Also check for leaks; then stop side of the machine and 75-1310 for the right side of the the engine.
  • Page 57: Hydraulic System Test Ports

    • Seek immediate medical attention if fluid is injected into skin. Hydraulic System Test Ports The test ports are used to test the pressure in the hydraulic circuits. Contact your local Toro distributor or refer to the Toro Service Manual for assistance. Figure 91 1. Damper assembly 2.
  • Page 58: Pivoting The Front Cutting Unit Down

    Measuring the Cutting Unit Pitch Cutting unit pitch is the difference in height-of-cut from the front of the blade plane to the back of the blade plane. Toro recommends a blade pitch of 7.5 mm (.300 inch). That is the back of the blade plane is 7.5 mm (.300 inch) higher than...
  • Page 59: Servicing The Castor Arm Bushings

    Servicing the Castor Arm Bushings The castor arms have bushings pressed into the top and bottom of the tube and after many hours of operation, the bushings will wear. To check the bushings, move the castor fork back and forth and from side to side. If the castor spindle is loose inside the bushings, the bushings are worn and must be replaced.
  • Page 60: Blade Maintenance

    The blade must be replaced if a solid object is hit, the blade is out of balance, or if the blade is bent. Always use genuine Toro replacement blades to be sure of safety and optimum performance. Never use replacement blades made by other manufacturers because they could be dangerous.
  • Page 61: Inspecting And Sharpening The Cutter Blade(S)

    Note: After striking a foreign object, torque all the 2. Examine the cutting ends of the blade carefully, spindle pulley nuts to 176 to 203 N⋅m (130 to 150 ft-lb) especially where the flat and curved parts of the blade and the blade bolts to 115 to 149 N⋅m (85 to 110 ft-lb).
  • Page 62: Correcting The Cutting Unit Mismatch

    Correcting the Cutting Unit Miscellaneous Mismatch Maintenance If there is mismatch between the blades, on a single cutting unit, the grass will appear streaked when it is cut. This Servicing the Spark Arrestor problem can be corrected by making sure that the blades are straight.
  • Page 63: Cleaning The Air Conditioning Coil

    1. Stop the engine and remove the key. 2. Remove the 6 nuts and washers from the bottom of the rear of the cab (Figure 105). g028378 Figure 103 1. Filter 3. Screw g028380 2. Grate Figure 105 1. Washer 2.
  • Page 64: Storage

    B. Clean the battery, terminals, and posts with a wire brush and baking soda solution. C. Coat the cable terminals and battery posts with Grafo 112X skin-over grease (Toro Part No. 505-47) or petroleum jelly to prevent corrosion. D. Slowly recharge the battery every 60 days for 24 hours to prevent lead sulfation of the battery.
  • Page 65 Notes:...
  • Page 66 Notes:...
  • Page 67 Notes:...
  • Page 68 Countries Other than the United States or Canada Customers who have purchased Toro products exported from the United States or Canada should contact their Toro Distributor (Dealer) to obtain guarantee policies for your country, province, or state. If for any reason you are dissatisfied with your Distributor's service or have difficulty obtaining guarantee information, contact the Toro importer.

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