Toro GrandStand 74504 Operator'S Manual Download

Page: 57 / 60

Problem

Possible Cause

Corrective Action

1. Blade(s) are not sharp.

1. Sharpen the blade(s).

2. Cutting blade(s) is/are bent.

2. Install new cutting blade(s).

3. The mower deck is not level.

3. Level the mower deck side-to-side

position.

4. The mower deck pitch is wrong.

4. Adjust the front-to-rear pitch.

5. The underside of mower deck is dirty.

5. Clean the underside of the mower

deck.

6. The tire pressure is not correct.

6. Adjust the tire pressure.

The cutting height is uneven.

7. A blade spindle is bent.

7. Contact an Authorized Service Dealer.

1. A pump drive belt is worn, loose or

broken.

1. Check the belt tension.

2. A pump drive belt is off pulley.

2. Install drive belt and check adjusting

shafts and belt guides for correct
position.

3. A mower deck belt is worn, loose or

broken.

3. Install new deck belt.

4. A mower deck belt is off pulley.

4. Install deck pulley and check the idler

pulley, idler arm and spring for correct
position and function.

5. An idler spring is broken or missing.

5. Replace the spring.

6. The electric clutch is out of adjustment.

6. Adjust the clutch air gap.

7. The clutch connector or wire is

damaged.

7. Contact an Authorized Service Dealer.

8. The electric clutch is damaged.

8. Contact an Authorized Service Dealer.

9. The safety-interlock system prevents

blade rotation.

9. Contact an Authorized Service Dealer.

The blades do not rotate.

10. The PTO switch is faulty.

10. Contact an Authorized Service Dealer.

1. The fuse is blown.

1. Replace the fuse. Check the coil

resistance, battery charge, charging
system, and wiring connections, and
replace components if necessary.

2. There is low voltage supply at the

clutch.

2. Check the coil resistance, battery

charge, charging system, and wiring
connections and replace parts if
necessary.

3. The coil is damaged.

3. Replace the clutch.

4. There is inadequate current supply.

4. Repair or replace the clutch lead

wire or electrical system. Clean the
connector contacts.

The clutch does not engage.

5. The rotor/armature air gap is too large.

5. Remove the shim or replace the clutch.

Summary of Contents for GrandStand 74504

Page 1: ...in TURBO FORCE Cutting Unit Model No 74504 Serial No 316000001 and Up Model No 74505 Serial No 316000001 and Up Model No 79504 Serial No 316000001 and Up Model No 79505 Serial No 316000001 and Up Register at www Toro com Original Instructions EN 3403 282 B ...

Page 2: ... Introduction This rotary blade ride on lawn mower is intended to be used by professional hired operators or residential homeowners It is designed primarily for cutting grass on well maintained lawns on residential or commercial properties It is not designed for cutting brush or for agricultural uses Read this information carefully to learn how to operate and maintain your product properly and to ...

Page 3: ...reasing the Caster Wheel Hubs 29 Engine Maintenance 30 Servicing the Air Cleaner 30 Servicing the Engine Oil 31 Servicing the Spark Plug 33 Checking the Spark Arrester 34 Fuel System Maintenance 35 Draining the Fuel Tank 35 Removing the Fuel Tank 35 Servicing the Fuel Filter 36 Electrical System Maintenance 36 Servicing the Battery 36 Servicing the Fuses 38 Drive System Maintenance 39 Adjusting th...

Page 4: ...s and attachments you need to properly and safely perform the job Use only accessories and attachments approved by the manufacturer Wear appropriate clothing including safety glasses long pants substantial slip resistant footwear gloves and hearing protection Tie back long hair Do not wear jewelry Inspect the area where you will use the equipment and ensure that all objects are removed from the ar...

Page 5: ...movement to stop before adjusting cleaning or repairing Clean grass and debris from the cutting unit drives mufflers and engine to help prevent fires Clean up oil or fuel spills Let the engine cool before storing the machine Do not store fuel near flames or drain the fuel indoors Do not allow untrained personnel to service the machine Use jack stands to support components when required Carefully r...

Page 6: ...th ramp that is wide enough to extend beyond the width of the machine Do not carry passengers Do not carry equipment on the machine Slope Operation All slopes and ramps require extra caution If you feel uneasy on a slope do not mow it Remove obstacles such as rocks tree limbs etc from the mowing area Watch for holes ruts or bumps Tall grass can hide obstacles Use caution near drop offs ditches or ...

Page 7: ... 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 20 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 Example of how to compare slope with folded edge 7 ...

Page 8: ... can cause blindness and other injuries 3 Caustic liquid chemical burn hazard 8 Battery acid can cause blindness or severe burns 4 Wear eye protection 9 Flush eyes immediately with water and get medical help fast 5 Read the Operator s Manual 10 Contains lead do not discard 106 5517 1 Warning do not touch the hot surface Manufacturer s Mark 1 Indicates the blade is identified as a part from the ori...

Page 9: ...l dense grass wet conditions maximum ground speed 131 3507 1 Read the Operator s Manual 2 Belt tensioner 131 3521 1 Height of cut 131 3524 1 Read the Operator s Manual 3 Oil level 2 Transmission oil 131 3528 15A 15A 10A 7 5A 131 3528 1 Ignition 15 A 3 Power takeoff PTO 10 A 2 Accessory port 15 A 4 Infocenter 7 5 A 9 ...

Page 10: ... bystanders away from the machine 3 Severing hazard of hand or foot keep away from moving parts 2 Thrown object hazard open baffle only operate the machine with a baffle or a grass collector 4 Entanglement hazard keep away from moving parts keep all guards and shields in place 133 4641 1 Warning do not carry any passengers 131 3526 1 Power takeoff PTO disengaged 5 Reverse 2 Fast 6 Traction drive 3...

Page 11: ...ngage the parking brake shut off the engine and remove the key from the ignition 2 Read the Operator s Manual before servicing or performing maintenance 3 Thrown object hazard keep the deflector lowered during operation 7 Warning engage the parking brake shut off the engine and remove the key from the ignition before leaving the machine 4 Cutting severing hazard of hand or foot keep away from movi...

Page 12: ...control lever 7 Throttle control Hour Meter The hour meter records the number of hours the engine has operated It operates when the engine is running Use these times for scheduling regular maintenance Figure 5 Safety Interlock Indicators Symbols on the hour meter indicate with a black triangle that the interlock component is in the correct position Figure 5 Battery Indicator Light If the ignition ...

Page 13: ...ro 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 Specifications Note Specifications and design are subject to change without notice 48 inch Mowers Width with deflector down 163 cm 64 inches Width with ...

Page 14: ...gasoline can burn you and others and can damage property Fill the fuel tank outdoors in an open area when the engine is cold Wipe up any gasoline that spills Never fill the fuel tank inside an enclosed trailer Do not fill the fuel tank completely full Add gasoline to the fuel tank until the level is 6 to 13 mm 1 4 to 1 2 inch below the bottom of the filler neck This empty space in the tank allows ...

Page 15: ...ottom of the filler neck Note This space in the tank allows the gasoline to expand Do not fill the fuel tank completely full 4 Install the fuel tank cap securely Wipe up any gasoline that may have spilled Checking the Engine Oil Level Before you start the engine and use the machine check the oil level in the engine crankcase refer to Checking the Engine Oil Level page 31 Breaking in a New Machine ...

Page 16: ... Figure 9 Figure 10 Operating the Throttle The throttle control moves between FAST and SLOW positions Figure 11 Always use the FAST position when engaging the mower blades with the blade control switch PTO G008946 Figure 11 Operating the Choke Use the choke to start a cold engine 1 Pull up the choke knob to engage the choke before using the ignition switch Figure 12 2 Push down the choke knob to d...

Page 17: ...he starter motor Note You may need to repeat the cycle for starting the engine when you start it for the first time after you have filled a completely empty fuel system with fuel Figure 13 Figure 14 Using the Fuel Shutoff Valve Close the fuel shutoff valve for transport maintenance and storage Figure 15 Ensure that the fuel shutoff valve is open when starting the engine Figure 15 1 ON position 2 O...

Page 18: ...l system with fuel Figure 16 Shutting off the Engine CAUTION Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended Always remove the ignition key and set the parking brake when leaving the machine unattended Let the engine idle at slow throttle turtle for 60 seconds before turning the ignition switch off Figure 17 Important Make sure that the f...

Page 19: ...e parking brake 4 Move either motion control lever to the center unlocked position 5 Continue holding the motion control lever in the center unlocked position pull up on the blade control switch PTO and release the switch Note The clutch should engage and the mower blades rotate 6 Move or release the motion control levers into the NEUTRAL LOCK position Note The blades should stop rotating and the ...

Page 20: ...ard 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 Always operate the machine in the FULL THROTTLE position when mowing CAUTION The machine can spin very rapidly and you may lose control of machine causing personal injury to you and damage to machine Slow the machine down before making s...

Page 21: ... control levers into the NEUTRAL LOCK position disengage the power takeoff PTO and turn the ignition key to the OFF position Set the parking brake when you leave the machine refer to Setting the Parking Brake page 15 Note Remember to remove the key from the ignition switch CAUTION Children or bystanders may be injured if they move or attempt to operate the machine Always remove the ignition key an...

Page 22: ...before driving onto the trailer or truck 2 If using a trailer connect it to the towing vehicle and connect the safety chains 3 If applicable connect the trailer brakes 4 Load the machine onto the trailer or truck 5 Shut off the engine remove the key set the brake and close the fuel valve 6 Use the metal tie down loops on the machine to securely fasten the machine to the trailer or truck with strap...

Page 23: ...se serious injury or death Use extreme caution when operating a machine on a ramp 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 This w...

Page 24: ... material down toward the turf If the grass deflector is ever damaged replace it immediately Never put your hands or feet under the mower Never try to clear the discharge area or mower blades unless you release the bail and the power takeoff PTO is off Rotate the ignition key to the OFF position Also remove the key and disconnect the wire s off the spark plug s Adjusting the Height of Cut The heig...

Page 25: ...t Figure 28 4 Adjust the baffle and nut in the slot to the desired discharge flow and tighten the nut g012676 1 2 Figure 28 1 Slot 2 Nut Positioning the Flow Baffle The following figures are only for recommended use 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 up the baffle Position A Thi...

Page 26: ...l weights to improve balance You can add or remove weights to create optimized performance under different mowing conditions and for your preference Add or remove weights 1 at a time until you achieve the desired handling and balance Note Contact an Authorized Service Dealer to order a Weight Kit WARNING Excessive weight changes can affect the handling and operation of the machine This could cause...

Page 27: ... oil filter Every 250 hours Replace the primary air filter Check the secondary air filter Every 300 hours Check and adjust the valve clearance See an Authorized Service Dealer Every 500 hours Replace the secondary air filter Adjust the caster pivot bearing Check the wheel hub nuts Check the hydraulic fluid level Change the hydraulic filters and hydraulic fluid Every 800 hours Replace the fuel filt...

Page 28: ...ist knobs Lubrication 1 Disengage the PTO and set the parking brake 2 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Clean the grease fittings with a rag Note Make sure to scrape any paint off the front of the fitting s 4 Connect a grease gun to the fitting 5 Pump grease into the fittings until grease begins to ooze out of the beari...

Page 29: ...eals 8 If both spacer nuts in the axle assembly have been removed or broken loose apply a thread locking adhesive to 1 spacer nut threading it onto the axle with the wrench flats facing outward Note Do not thread spacer nut all of the way onto the end of the axle Leave approximately 3 mm 1 8 inch from the outer surface of the spacer nut to the end of the axle inside the nut 9 Insert the assembled ...

Page 30: ...filter while shining a bright light on the outside of the filter Note Holes in the filter appear as bright spots Note Discard the filter if it is damaged g026970 Figure 35 1 Air cleaner clamps 3 Primary air filter 2 Air cleaner cover 4 Secondary air filter Servicing the Primary Filter 1 Inspect the element for tears an oily film or damage to the rubber seal 2 Replace the paper element if it is dam...

Page 31: ...er removed 1 8 L 61 oz without the filter removed Viscosity Refer to the table below Figure 36 Checking the Engine Oil Level Note Check the oil when the engine is cold WARNING Contact with hot surfaces may cause personal injury Keep hands feet face clothing and other body parts away the muffler and other hot surfaces Important Do not run the engine with the oil level above the Full mark or below t...

Page 32: ...AL LOCK position and set the parking brake 3 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 4 Change the engine oil as shown in Figure 38 Figure 38 5 Slowly pour approximately 80 of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark Figure 39 B A C D E F g027660 Figure 39 6 Start the ...

Page 33: ...hes the engine then rotate the filter an extra 3 4 turn 4 Fill the crankcase with the proper type of new oil refer to Changing the Engine Oil page 32 Servicing the Spark Plug Service Interval Every 100 hours Make sure that the air gap between the center and side electrodes is correct before installing the spark plug Use a spark plug wrench for removing and installing the spark plug s and a gapping...

Page 34: ...WARNING Hot exhaust system components may ignite gasoline vapors even after you shut off the engine Hot particles exhausted during engine operation may ignite flammable materials resulting in personal injury or property damage Do not refuel or run the engine unless the spark arrester is installed 1 Shut off the engine wait for all moving parts to stop engage the parking brake and remove the key 2 ...

Page 35: ...soline fumes 1 Disengage the PTO move the motion control levers to the NEUTRAL LOCK position and set the parking brake 2 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Clean around the fuel cap to prevent debris from getting into the fuel tank Figure 44 4 Remove the fuel cap 5 Insert a syphon pump into the fuel tank 6 Using the syph...

Page 36: ...art baking soda Apply a light coating of grease to the battery terminals to prevent corrosion Voltage 12 V WARNING CALIFORNIA Proposition 65 Warning Battery posts terminals and related accessories contain lead and lead compounds chemicals known to the State of California to cause cancer and reproductive harm Wash hands after handling DANGER Do not drink electrolyte and avoid contact with skin eyes...

Page 37: ...efore disconnecting the positive red cable Always connect the positive red battery cable before connecting the negative black cable 1 Disengage the PTO and set the parking brake 2 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Remove the battery as shown in Figure 47 Figure 47 Installing the Battery Install the battery as shown in F...

Page 38: ...ger leads from the battery posts Figure 49 6 Install the battery onto the machine and connect the battery cables refer to Installing the Battery page 37 Note Do not run the machine with the battery disconnected electrical damage may occur 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...

Page 39: ...d to the right wheel speed Do not adjust the right wheel speed as this positions the right motion control lever out of the center for the control panel neutral lock slot Important Do not rotate the control rod too far as this may cause the machine to creep in neutral Figure 51 1 Rotate left to lengthen the rod 3 Rotate right to shorten the rod 2 Left control rod 5 Check for proper tracking and adj...

Page 40: ...minimal Failure to keep the bearing well lubricated causes rapid wear A wobbly caster wheel usually indicates a worn bearing 1 Remove the locknut and wheel bolt holding the caster wheel to the caster fork Figure 54 Figure 54 1 Locknut 4 Spanner bushing 2 Wheel bolt 5 Roller bearing 3 Bushing 2 Remove 1 bushing then pull the spanner bushing and roller bearing out of the wheel hub Figure 54 3 Remove...

Page 41: ...6 Measure the gap between the rotor and armature If the gap is greater than 1 mm 0 04 inch proceed with the following steps A Loosen both brake mounting bolts 1 2 to 1 full turn as shown in Figure 57 Note Do not remove the brake pole from the field shell armature The brake pole has worn to match the armature and needs to continue to match after you remove the shim to ensure the proper brake torque...

Page 42: ...disengage install the shim and refer to Troubleshooting page 56 iii Engage and disengage the blade control switch PTO 10 consecutive times to ensure that the clutch is functioning properly Note If the clutch does not engage properly refer to Troubleshooting page 56 Checking the Wheel Lug Nuts Service Interval After the first 100 hours Check the wheel lug nuts Check and torque the wheel lug nuts to...

Page 43: ...all the air intake screen and fan housing Figure 61 Figure 61 1 Guard and engine air intake screen 2 Fan housing Brake Maintenance Servicing the Brake Before each use check the brakes on a level surface and slope Always set the parking brake when you stop the machine or leave it unattended Important If the parking brake does not hold securely adjust it Checking the Parking Brake Service Interval B...

Page 44: ...in Figure 63 Figure 63 Replacing the Transmission Belt Service Interval Every 1 000 hours Replace the transmission belt 1 Remove the fuel tank refer to Removing the Fuel Tank page 35 2 Remove the hydraulic reservoir cap 3 Locate the drain plugs in the bottom of the transmission and place a drain pan under the plug Figure 64 Figure 64 1 Drain plug 4 Allow the hydraulic fluid to drain from the machi...

Page 45: ... PTO move the motion control levers to the neutral position and set the parking brake 2 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Push the motion control levers down out of the NEUTRAL LOCK position Figure 66 4 Check if the right motion control lever aligns horizontally with the left motion control lever Figure 66 Figure 66 1 L...

Page 46: ...ic System Fluid Capacity 4 7 L 5 US qt Important Use the fluid specified Other fluids could damage the system Checking the Hydraulic Fluid Service Interval After the first 8 hours Every 500 hours Note Check the hydraulic fluid level when the fluid is cold 1 Position the machine on a level surface 2 Disengage the power takeoff PTO and shut off the engine 3 Wait for all moving parts to stop and set ...

Page 47: ...the hydraulic fluid more frequently in severe conditions or in a hot operating climate Contact your Authorized Service Dealer for a hydraulic kit to replace the hydraulic filters WARNING Hot hydraulic fluid can cause severe burns Allow the hydraulic fluid to cool before performing any maintenance on the hydraulic system 1 Disengage the PTO and set the parking brake 2 Shut off the engine and wait f...

Page 48: ... the idle position Note If the drive wheel does not rotate it is possible to assist the purging of the system by carefully rotating the tire in the forward direction 5 Check the hydraulic fluid level as it drops and add fluid as required to maintain the proper level 6 Repeat this procedure for the opposite wheel Mower Deck Maintenance Servicing the Cutting Blades To ensure a superior quality of cu...

Page 49: ...ould break apart and could critically injure you or bystanders Always replace a bent or damaged blade with a new blade Do not file or create sharp notches in the edges or surfaces of the blade Removing the Blades Replace the blades if they hit a solid object if a blade is out of balance or if a blade is bent To ensure optimum performance and continued safety conformance of the machine use genuine ...

Page 50: ...in these procedures make sure that the rear tires have the correct pressure 1 Disengage the PTO and set the parking brake 2 Shut off the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Disconnect the spark plug wire s from the spark plug s 4 Adjust the tire pressure in the rear tires to 83 to 97 kPa 12 to 14 psi 5 Check that the blades and spindl...

Page 51: ... jam nuts and side bolts 4 Check the side to side height refer to Checking the Mower Deck Side to Side Height page 50 Checking the Mower Deck Front to Rear Pitch 1 Adjust the tire pressure in the rear tires to the correct specifications 2 Position 1 blade front to rear Measure at A and B locations from a level surface to the cutting edge of the blade tips Figure 79 Note The mower blade should be 6...

Page 52: ...h refer to Checking the Mower Deck Front to Rear Pitch page 51 Matching the Height of Cut 1 Check the rear tire pressure 2 Set the height of cut to the 7 6 cm 3 inches position refer to Adjusting the Height of Cut page 24 3 With the machine on level surface position 1 blade front to rear 4 Measure at A and from a level surface to the cutting edge of the blade tips Figure 81 Note The measurement sh...

Page 53: ...chine to throw objects in the operator s or bystander s direction and result in serious injury Also contact with the blade could occur Do not operate the machine unless you install a cover plate a mulch plate grass deflector or bagger 1 Remove the locknut bolt spring and spacer holding the deflector to the pivot brackets Figure 83 g015594 1 6 2 4 7 3 5 Figure 83 1 Bolt 5 Spring installed 2 Spacer ...

Page 54: ...ns and blower housing 4 Check the brake refer to Checking the Parking Brake page 43 5 Service the air cleaner refer to Servicing the Air Cleaner page 30 6 Grease the machine refer to Lubrication page 28 7 Change the engine oil refer to Changing the Engine Oil page 32 8 Check the tire pressure refer to Checking the Tire Pressure page 39 9 For long term storage A Add stabilizer conditioner additive ...

Page 55: ...13 Store the machine in a clean dry garage or storage area Remove the key from the ignition switch and keep it in a memorable place Cover the machine to protect it and keep it clean 55 ...

Page 56: ...k plug 6 The vent hole in the fuel cap is plugged 6 Clean or replace the fuel cap 7 Dirt is in the fuel filter 7 Replace the fuel filter The engine loses power 8 Dirt water or stale fuel is in the fuel system 8 Contact an Authorized Service Dealer 1 Engine load is excessive 1 Reduce the ground speed 2 Oil level in the crankcase is low 2 Add oil to the crankcase The engine overheats 3 Cooling fins ...

Page 57: ...rect position and function 5 An idler spring is broken or missing 5 Replace the spring 6 The electric clutch is out of adjustment 6 Adjust the clutch air gap 7 The clutch connector or wire is damaged 7 Contact an Authorized Service Dealer 8 The electric clutch is damaged 8 Contact an Authorized Service Dealer 9 The safety interlock system prevents blade rotation 9 Contact an Authorized Service Dea...

Page 58: ...Schematics Electrical Schematic Rev A 58 ...

Page 59: ...Notes 59 ...

Page 60: ...performed by a dealer or by you is at your expense Items and Conditions Not Covered There is no other express warranty except for special emission system coverage and engine warranty coverage on some products This express warranty does not cover the following Cost of regular maintenance service or parts such as filters fuel lubricants oil changes spark plugs air filters blade sharpening or worn bl...

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Toro GrandStand 74504, Operator'S Manual

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