Form No. 3354–124 Rev A Groundsmaster) 580-D Traction and Cutting Units Model No. 30582—260000001 and Up Model No.
Diagnostic Light . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic ACE Display . . . . . . . . . . . . . . . . . . . Checking the Interlock Switches . . . . . . . . . . . . . Checking the Warning Indicator Lights . . . . . . . . Pushing or Towing the Machine . . . . . . . . . . . . . . Operating Characteristics . . . . . . . . . . . . . . . . . . . Four Wheel Drive Operation . . . . . . . . . . . . . . . . Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction Safety Read this manual carefully to learn how to operate and maintain your product properly. The information in this manual can help you and others avoid injury and product damage. Although Toro designs and produces safe products, you are responsible for operating the product properly and safely. This machine meets or exceeds CEN standard EN 836:1997 (when appropriate decals applied), and ANSI B71.
• Remember there is no such thing as a safe slope. Travel on grass slopes requires particular care. To guard against overturning: • lack of awareness of the effect of ground conditions, especially slopes. • The owner/user can prevent and is responsible for accidents or injuries occurring to himself or herself, other people, or property.
• Carefully release pressure from components with stored energy. – after striking a foreign object or if an abnormal vibration occurs. Inspect the mower for damage and make repairs before restarting and operating the equipment. Torque all the spindle pulley nuts to 130–150 ft–lbs.; • Disconnect battery before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect positive first and negative last.
• Keep your body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not your hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause serious injury. Seek immediate medical attention if fluid is injected into skin. • Using the machine demands attention. To prevent loss of control: – Do not drive close to sand traps, ditches, creeks, embankments, or other hazards.
Safety and Instruction 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 lost. 72-4070 108-8001 1. 10 amp fuse for seat suspension 2. 10 amp fuse for horn 72-4080 3. Open 4. Open 95-0821 1. Read the operator’s manual for information on hydraulic oil. 2. View the hydraulic level oil through the sight glass. 108-8002 1. Read the Operator’s Manual. 2. 5 amp fuse for engine 3.
95-0822 1. Warning—do not step or ride on fender. 2. Warning—do not fill the fuel tank more than 1 in. (25 mm) below the bottom of the filler neck. 43-8480 1. Cutting hazard of hands and fingers 67-5360 98-4387 1. Warning—wear hearing protection. 108-8074 1. Read the Operator’s Manual.
5-0818 1. Warning—torque the blade bolt to 140–165 ft.-lb. (190–224 N⋅m). Read the operator’s manual for further instructions. 106-5976 1. Engine coolant under pressure 2. Explosion hazard—read the Operator’s Manual. 3. Warning—do not touch the hot surface. 4. Warning—read the Operator’s Manual. 95-0845 1. Height-of-cut settings 106-0390 1. 2. 3. 4. Parking brake High speed Cruise control locked To lock the parking brake, press the brake pedal and pull out the parking brake knob. 5.
6-0392 1. Engine—preheat 2. Fast 3. Continuous variable setting 4. Slow 5. Lower the cutting unit 6. Raise the cutting unit 7. Left cutting unit 8. Center cutting unit 9. Right cutting unit 95-0817 1. Low range height-of-cut settings 2. High range height-of-cut settings 105-0739 1. Read the Operator’s Manual. 2. Grease every 50 hours. 110–6126 10 3. Add grease (9 grease points).
106-0393 1. Press the button to silence the alarm. 2. Press the button to test the warning lights. 107-1159 93-6681 1. Cutting/dismemberment hazard, fan—stay away from moving parts. 93-8053 1. Read the Operator’s Manual.
106-0391 1. 2. 3. 4. 5. 6. 7. Engine—stop Engine—run Engine—start Flow divider Forward Reverse Engage the power take-off (PTO). 8. Disengage the power take-off (PTO) 9. Transmission—high speed 10. Transmission—low speed 11. Forward machine speeds 12. Press the button to set the cruise control 13. Cruise control 14. On 15. Off 16. Headlights 17. Push the button to over-ride an overheated engine shutdown. 18.
Specifications Note: Specifications and design subject to change without notice. Traction Unit Engine Air Cleaner Cooling System Fuel System Mitsubishi, Model S4S-DT 4 cycle, four cylinder, overhead valve, 203.3 cu. in. (3331 cc) displacement, water cooled diesel. Rated 80 HP @2750 RPM. 19:1 compression ratio, direct injected and turbo-charged. Crankcase capacity: 8.5 qt. (8 l). Heavy duty, centrifugal air type w/replaceable element. Radiator w/wide-spaced fins (7 per in.).
Traction Unit (continued) Traction System Hydrostatic closed loop system driving gear reduction wheel drives. Has bypass valve for towing. Adjustable foot pedal with speed stop controls forward/reverse ground speed. Switch engaged cruise control, disengaged by service brake or ON/OFF switch. Cruise speed changeable without disengagement. The 4 wheel drive assist can be engaged or disengaged in forward or reverse, in the mow range with a three position switch (on position forward, momentary reverse).
Outboard Cutting Units Type Trimming Ability Height-of-Cut Adjustment Cutter Drive Castor Wheels Cutting Unit Suspension Two, three spindle, side mounted rotary cutting units each with a 57 in. (145 cm) width of cut. Trims to either side. 58 in. (147 cm) cutting unit offset from outside of wheel to trim side of side cutting unit on either side. 1/2 in. (12.7 mm) increments by spacers on all castor shafts. Hydraulic gear motor. Three “B” section belts to spindles. Four 10.50 x 3.
Setup Note: Determine the left and right sides of the machine from the normal operating position. Description Qty. Deck tilt link 1 Klik pin 2 Adjusting screw 1 Nut 1 Height gauge 1 Use when replacing front cutting unit blade drive belt Diagnostic ACE overlay 1 Troubleshooting aid Parts Catalog 1 Ordering service parts. Operator’s manual 2 Read and understand before operating the machine. Operator Video 1 View and understand before operating the machine.
3. Check both batteries for charge with a hydrometer. If batteries check acceptably, slide tray back in place, secure with capscrews and lockwashers and install side panel. If batteries require charging, proceed to step 4. Warning Charging the battery produces gasses that can explode. Warning Never smoke near the battery and keep sparks and flames away from the battery. Charge batteries in a open well ventilated area. Incorrect battery cable routing could damage the tractor and cables, causing sparks.
Before Operating 3. Remove dipstick (Fig. 5), wipe with a clean rag, and insert into tube until fully seated. Remove dipstick from tube and check oil level. If oil level is low, remove filler cap (Fig. 6). Add proper type of oil until level is between the upper and lower holes on the dipstick (Fig. 7). Do not overfill. Checking the Engine Oil The engine is shipped with 8.5 qt. (8 l) of oil in the crankcase. However, check level of oil before and after the engine is first started.
Checking the Cooling System The cooling system is filled with a 50/50 solution of water and permanent ethylene glycol anti-freeze. Check coolant level at beginning of each day before starting the engine. Capacity of cooling system is approximately 3.9 gal. (14.7 l). Caution 1 If the engine has been running, the pressurized, hot coolant can escape and cause burns. • Do not open the radiator cap when the engine is running.
• Under Normal mowing conditions and when used on a wide variety of turf grasses: 15 psi (100 kPa) front; 13 psi (90 kPa) rear. 2. If oil level is low, add hydraulic oil to the reservoir (Fig. 10); refer to Servicing the Hydraulic System, page 44. • When turf is wet and softer than normal, use low pressure: 12 psi (80 kPa) front and 9 psi (60 kPa) rear. Filling the Fuel Tank • When turf is dry and harder than normal, use higher tire pressure: 18 psi (120 kPa) front and rear. The engine runs on ASTM No.
height can be changed to compensate for difference and either transfer washers from bottom to top to lower unit, or from top to bottom to raise. Transfer an equal number of washers at all castor wheel locations to keep cutting unit level—two on front unit, four on outboard units. 4 1 Adjusting the Height of Cut 3 The height-of-cut is adjustable from 1 to 5-1/2 in. (25 to 140 mm) in 1/2 in. (13 mm) increments. Positioning the castor wheel axles in the top holes of the castor forks (Fig.
Adjusting the Skids After initial set up or if height-of-cut is changed, deck skids should also be adjusted. Adjust skids by loosening flange lock nuts (Fig. 15), positioning skid at specified height (see chart) and re-tightening flange lock nuts. Front Cutting Unit All H.O.C.—3/8 to 1/2 in. above level surface Outboard Cutting Units 1 in. H.O.C.—Skid positioned all the way up 1-1/2 to 3 in. H.O.C.—Skid positioned 1/2 to 1 in. above level surface 3 in. and above H.O.C.
Operation 2 3 Note: Determine the left and right sides of the machine from the normal operating position. 1 5 Controls 4 8 Seat Seat adjusting lever (Fig. 16) Adjusts the seat fore or aft. 6 Weight Adjusting Lever (Fig. 16) Adjusts seat for operator’s weight. Weight Adjusting Gauge (Fig. 16) Indicates when seat is adjusted properly for operator’s weight. 7 Figure 17 Arm Rest Adjusting Knob (Fig. 16) Adjusts arm rest angle. 1. Coolant temperature gauge 2. Fuel gauge 3. Hour meter 4.
Coolant Temperature Gauge Alarm Silence Button The coolant temperature gauge (Fig. 17) indicates temperature of system coolant. Pressing button (Fig. 18) silences alarm. Alarm system will disengage and automatically reset when problem is corrected. Fuel Gauge Parking Brake Indicator The fuel gauge (Fig. 17) indicates quantity of fuel in fuel tank. The parking brake indicator, on the steering column (Fig. 19), alerts operator the parking brake is on.
Key Switch High Range/Low Range Ground Speed Switch The key switch (Fig. 20) has three positions: OFF, ON, and START. Rotate key to START and release when engine begins running. To stop, rotate key to OFF position. This single lever (Fig. 20) allows selection of either high or low range ground speeds. Push switch forward for High Range or pull back for Low Range. Switch returns to center position.
Engine Override Switch upon high range/low range ground speed mode(slower in low than high range) and proportionate to how far pedal is depressed. If engine has overheated and been shut–down by the safety switch, depressing button (Fig. 20 and 21) will allow engine operation. Use button only for emergencies and only at short intervals. Steering/Parking Brake Pedals The left and right turn pedals are connected to the front wheel brakes (Fig. 23).
2 7 1 5 6 4 1 2 2 Figure 24 1. Hinged floor plate 3 2. Removable tool tray Figure 25 Important The fuel system must be bled if any of the following have occurred: 1. 2. 3. 4. • Initial start-up of a new machine. PTO Switch Cruise control switches High/Low range switch Cutting unit lift controls 5. Throttle lever 6. Ignition key switch 7. Glow plug indicator light • Engine has ceased running due to lack of fuel. • Maintenance has been performed upon fuel system components; i.e.
Bleeding the Fuel System Diagnostic Light 1. Unlatch, raise and prop engine hood open and remove left side panel (Fig. 26). The machine is equipped with a diagnostic light which indicates if the electronic controller is functioning correctly. The green diagnostic light is located under the control panel (Fig. 28). When the electronic controller is functioning correctly and the key switch is moved to the ON position, the controller diagnostic light will be illuminated.
Diagnostic ACE Display The machine is equipped with an electronic controller which controls most machine functions. The controller determines what function is required for various input switches (i.e. seat switch, key switch, etc.) and turns on the outputs to actuate solenoids or relays for the requested machine function. 1 For the electronic controller to control the machine as desired, each of the input switches, output solenoids and relays must be connected and functioning properly.
should illuminate to indicate that the ECU is turning on that function. (Refer to the logic chart to be certain of the specified output LED’s). blink on and off when corresponding switch is closed and opened. Repeat on each switch that it is possible to be changed by hand. 7. If switch is closed and appropriate LED does not blink on and off, check all wiring and connections to switch and/or check switches with an ohm meter. Replace any defective switches and repair any defective wiring.
X X O O 6) Right Deck Engage 7) Left Deck Engage 8) Gauges ON X O 5) Front Deck Engage 4) Cruise Engage X X 3) Run (no operator) Run (with operator) X 2) Hi Range Engage 1) Start ACTIONS LOGIC GRID X X O X O X O X X XX O X O B X X O B X X M O MO MO X O X O O O M X O O O MX X OUTPUTS X=CLOSED, O=OPEN, P=OUTPUT ON, KEY: M=MOMENTARILY CLOSED, B= MUST BE CLOSED ONLY IF HI TEMP SWITCH IS CLOSED.
Checking the Warning Indicator Lights Each day, before operating assure all warning lights are functioning: 1. Sit on seat and apply parking brake. Turn ignition key ON and push TEST button. All lights should illuminate. 2. If a light fails to illuminate, replace the bulb and test again. 1 Pushing or Towing the Machine Figure 31 In an emergency, the machine can be moved by the following methods: 1.
Note: We recommend HIGH RANGE ground speed be used for road travel only (with cutting units up). Points to consider while operating the traction unit, cutting units or other implements are the hydrostatic transmission, engine speed, load on the cutting blades or other implement components and the importance of the brakes. To maintain adequate power for the traction unit and implement components while operating, regulate traction pedal position to keep engine rpm high and relatively constant.
High Range Ground Speed Operation We recommend HIGH RANGE ground speed operation be performed only on roads with the cutting units in fully raised position. Start the machine in LOW RANGE, then shift to HIGH RANGE. The HIGH RANGE Indicator light will turn ON, indicating the machine is in the HIGH RANGE mode. To cease HIGH RANGE operation, take foot off traction pedal and apply the brakes. Move throttle lever to SLOW and position ground speed selector in LOW RANGE.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule Maintenance Service Interval Maintenance Procedure After first 10 hours • Check the fan and alternator belt adjustment. • Torque the wheel lug nuts. • Check the cutting unit drive belt adjustment. After first 50 hours • • • • • Change the engine oil and replace the filter. Replace the hydraulic filter. Torque cylinder head bolts and adjust valves.
Daily Maintenance Checklist Duplicate this page for routine use. For the week of: Maintenance Check Item Mon. Tues. Check safety interlock operation. Check brake operation. Check engine oil level. Check cooling system fluid level. Drain water/fuel separator. Check air filter/pre-cleaner condition. Check radiator and screen for debris. Check unusual engine noises. Check unusual operating noises. Check height of cut. Check hydraulic system oil level. Check hydraulic hoses for damage. Check fluid leaks.
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.
Lubrication The following must be lubricated regularly with No. 2 general purpose lithium or molybdenum base grease. The chart below lists service intervals based upon normal operating conditions. However, lubricate more frequently under extreme conditions. Use the above chart and figure 33 to determine the areas to lubricate and number of fittings involved. The left column numbers correspond with numbers in Fig. 33.
Component No.
Engine Oil and Filter 2. Remove dipstick, wipe with clean rag (Fig. 35) and fully insert in tube. Remove from tube and check oil level. Level should be between the lower and upper holes on the dipstick (Fig. 37). The engine uses any high quality detergent oil having the American Petroleum Institute – API – “service classification” CH–4, CI–4 or higher. 3. If level is low, remove filler cap (Fig. 36). Add proper type of oil until level is between the holes on the dipstick (Fig. 37). Do not overfill.
Changing the Engine Oil and Filter Engine Fuel System The engine holds approximately 8.5 qt (8 l) of oil. Change oil and filter after the first 50 hours, then change both every 100 hours operation. However, change oil more frequently when engine is operated in dusty or sandy conditions. If possible, run engine just before changing oil because warm oil flows better and carries more contaminants than cold oil. 1.
• Clamp off the hose on each side of the fuel filter to prevent gas from pouring out of the hoses when you remove the filter. 1 • Place a drain pan under the filter. • Loosen the screw and nut securing the fuel filter mounting clamp to the mounting plate (Fig. 41). • Loosen the hose clamps and slide them away from the filter (Fig. 41). • Remove the filter from the fuel lines. • Install a new filter and move the hose clamps close to the filter. Make sure flow direction arrow points toward the engine.
B. Unlatch and raise hood and prop it open. Unlatch and remove right side panel. 3 1 C. Proper tension will allow 1/2 in. (13 mm) deflection when a force of 10 lb. is applied on the belt midway between the pulleys. If deflection is incorrect, proceed to step D; if deflection is correct, install panel and close hood. D. Loosen the 3 bolts securing alternator to plate and mounting bracket (Fig. 45). Rotate alternator away from engine to increase tension and tighten bolts.
5. Install the cover orienting the rubber outlet valve in a downward position – between approximately 5:00 to 7:00 when viewed from the end. 1 6. Secure the latches. Servicing the Hydraulic System The machines reservoir is filled at the factory with approximately 40 U.S. gallons (151.4 l) of high quality hydraulic fluid. Check the level of the hydraulic fluid before the engine is first started and daily thereafter.
Inspecting the Lines and Fittings 2. If oil needs to be added, clean area thoroughly around the fill cap before removing cap (Fig. 48). Add oil until proper level is indicated in sight glass. Every 100 hours operation inspect all hoses, lines and fittings for signs of leakage or damage (blisters, cut hoses, etc.) 2 Warning Hydraulic fluid escaping under pressure can penetrate skin and cause injury.
Draining the Hydraulic Reservoir Hydraulic System Test Ports Every 1000 hours operation, or yearly, drain and replace hydraulic fluid in reservoir. Total system capacity is approximately 40 gal. (151 l); reservoir capacity is approximately 32 gal. (121 l). The test ports (Fig. 52 & 53) are used for testing the hydraulic circuits. Contact your local Toro distributor for assistance on use of these components. The test ports are located underneath the center of the machine.
Checking the Oil Level Important Before welding on the machine or performing service to the electrical system, disconnect negative (–) battery cable from the batteries to prevent damage to the electrical system. 1. With machine on level surface, position wheel so the check/drain plug is at either three or nine o’clock position (Fig. 54). Check battery cables and connections every 100 hours and check batteries with a hydrometer every 500 hours operation. Keep terminals and entire battery case clean.
Warning Incorrect battery cable routing could damage the tractor and cables, causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. • Always reconnect the positive (red) battery cable before reconnecting the negative (black) cable. 1 Figure 56 1. Fuse block (2) 4. Remove negative (–) battery cable connectors from batteries (Fig. 55). Connect a 3 to 4 amp.
Note: To grease spindle bearings, apply 2–3 pumps with a hand grease gun for each spindle. 1. Position machine on level surface, lower cutting units to shop floor, engage parking brake, shut engine off and remove key from ignition switch. 2. Remove the inner deck pulley cover (Fig. 59). 2 3 1 Figure 58 1. Master cylinder 2. Cover bail 3. Reservoir cover 1 Figure 59 Wheels and Tires 1. Inner cover Torque Wheel Nuts 3.
2. Remove deck tilt link from tool box under traction unit floor (Fig. 57) and klik pins from weldments on traction unit frame and cutting unit lift arm. 5 3. Remove hairpin cotters and clevis pins from the (2) rear castor assemblies (Fig. 61). Set the left hand clevis pin aside and insert the right hand clevis pin into the most forward holes in the castor wheel arm on the right side of the unit (Fig. 59). The castor arm and pin should be resting on top of the unit.
Checking for a Bent Blade After striking a foreign object, inspect the machine for damage and make repairs before restarting and operating the equipment. Torque all the spindle pulley nuts to 140–160 ft–lbs. 1 1. Position the machine on a level surface. Raise the cutting unit, engage the parking brake, put the traction pedal in neutral, put the PTO lever in the Off position, stop the engine, and remove the ignition key. Block the cutting unit to prevent it from accidentally falling. 3 4 2 2.
Inspecting and Adjusting the Cutting Unit Belt Tension before using the machine. If any wear is noticed (Fig. 65-B), replace the blade; refer to Removing the Cutting Unit Blade, page 51. Important After first ten hours of operation, check new belts for proper tension; thereafter, check tension every 50 hours. Front Cutting Unit Note: Belts for wing unit spindles are tensioned by spring loaded idlers and normally do not require tensioning. 1.
Outboard Cutting Units 8 1. Remove deck covers. To check belt tension, apply 8 lb. (35.5 N) force at mid-span of belt and check deflection. There should be approximately 5/16 in. (7.9 mm) deflection. If deflection is incorrect, proceed to step 2. If deflection is correct, proceed to step 3. 6 2. To tension belts, loosen flange locknut at top of idler pulley (Fig. 68). Slide pulley against belt until proper tension is reached. Hold pulley in position and tighten locknut.
9. Loosely secure motor mount to deck with the (4) flangehead capscrews and washers previously removed. 6.75” $ .25 10. Check the drive pulley (Fig. 69) height as follows: • Slide the height gauge (Fig. 69) under drive pulley (not under taper lock bushing). • Equally tighten or loosen (3) adjusting screws (Fig. 69) until bottom of pulley rests flush on height gauge (approximately 1–1/2”). 3 4 1 • Tighten the front adjusting screw nuts to lock the adjustment.
Separating the Cutting Units from the Traction Unit 5 4 Front Cutting Unit 3 1. Position machine on level surface, lower cutting unit to shop floor, engage parking brake, shut engine off and remove key from ignition switch. 1 2. Remove deck covers. 2 3. Loosen jam nut and relieve tension on springs with tensioner bolt (Fig. 67). 4. Loosen (4) capscrews securing slide plate to motor mount (Fig. 69). Figure 72 1. Deck cover 2. Gearbox plate 3. Deck pivot shaft 5.
do not fit recommended standards, add shims between the cutting deck and spindle housing; proceed to step 6. If measurements meet standards, proceed to step 5. 5. Rotate blades so tips line up with one another. Tips of adjacent blades must be within 1/8 in.(3 mm) of each other. If tips are not within 1/8 in. (3 mm) of one another, add shims between spindle housing and bottom of cutter deck; proceed to step 6. 2 6. Remove locknuts securing spindle housing to deck in area where shims are to be added.
Inspect and Adjust Fuel Injection Nozzles 4. Move stabilizer brackets inward until rollers contacts skirt of machine, then tighten capscrews locking adjustment. Check and adjust every 400 operating hours. Adjusting the Traction Control Rod 1. Park machine on a level surface, engage parking brake, raise wing decks completely, lower front deck to the ground and turn the engine OFF. 2. Remove cotter pin and slotted nut from ball joint at traction pedal (Fig. 76). Disconnect ball joint from traction pedal.
10A 16 GA FUSIBLE LINK 99–6125 STARTER 12 GA FUSIBLE LINK 106–0065 ACCESSORY (OPTIONAL) FUSE BOX 92–2641 12 GA FUSIBLE LINK 106–0065 16 GA FUSIBLE LINK 99–6125 AIR–RIDE COMPRESSOR 99–7435 99–7435 M 104–2541 S2 Electrical Schematic – Model 30582
10A 16 GA FUSIBLE LINK 99–6125 STARTER 12 GA FUSIBLE LINK 106–0065 ACCESSORY (OPTIONAL) FUSE BOX 92–2641 12 GA FUSIBLE LINK 106–0065 16 GA FUSIBLE LINK 99–6125 AIR–RIDE COMPRESSOR G 99–7435 99–7435 M S HIGH/LOW SPEED 104–2541 2 1 3 4WD SWITCH 6 5 4 S2 REVERSE (TRACTION) SWITCH REVERSE 4WD FORWARD 4WD Electrical Schematic – Model 30583
O PR F E D C B A E A .120 LEFT WHEEL 15.88:1 0.96 2.8 2.8 0.96 15.88:1 RIGHT WHEEL 3.5 GPM PRIORITY .047 400 PSI 2000 PSI 600 PSI 50 PSI 450 PSI 50 PSI A1 P T F E1 B 2 SPEED SOLENOID WING DECK LIFT–LEFT 11 GPM 1500 PSI L TEST PORTS TEST PORTS 2.
Hydraulic Schematic – Model 30583 61
The Toro General Commercial Products Warranty A Two-Year Limited Warranty Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrant your Toro Commercial Product (“Product”) to be free from defects in materials or workmanship for two years or 1500 operational hours*, whichever occurs first.
