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Toro 74271, Operator'S Manual

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Toro 74271 Operator'S Manual Download Page 44

Figure 56

1. Fixed idler

2. Adjustment slot

Replacing the Pump Drive

Belt

Check pump drive belt for wear after every
50 hours of operation.

1. Pull the spring loaded idler down and remove

traction belt from the engine and hydro pump
pulleys (Figure 57). Remove belt between
pulleys.

Figure 57

2. Install new belt around engine and hydro pump

pulleys (Figure 57).

3. Pull spring loaded idler down and align below

traction belt. Release the pressure on the
spring loaded idler (Figure 57).

Controls System

Maintenance

Adjusting the Control

Handle Neutral Position

If motion control levers do not align, or move
easily into the console notch, adjustment is
required. Adjust each lever, spring and rod
separately.

Note:

Motion control levers must be installed

correctly. See Installing the Motion Control Levers
in the set up instructions.

1. Disengage the PTO, move the motion control

levers to the neutral locked position and set
the parking brake.

2. Stop 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 forward.

4. Begin with either the left or right motion

control lever.

5. Move the lever to the neutral position but not

locked (Figure 58).

Figure 58

1. Neutral locked position

3. Neutral position

2. Control lever

6. Pull the lever back until the clevis pin (on arm

below pivot shaft) contacts the end of the slot
(just beginning to put pressure on the spring)
(Figure 58).

7. Check where the control lever is relative to

notch in console (Figure 58). It should be

44

Summary of Contents for 74271

Page 1: ...h 52in 60in or 72in TURBO FORCE Side Discharge Mower Model No 74271 Serial No 270000001 and Up Model No 74272 Serial No 270000001 and Up Model No 74273 Serial No 270000001 and Up Register your product at www Toro com Original Instructions EN ...

Page 2: ...com for product and accessory information help finding a dealer or to register your product Whenever you need service genuine Toro parts or additional information contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready Figure 1 identifies the location of the model and serial numbers on the product Write the numbers in the space provid...

Page 3: ...er 35 Servicing the Fuel Tank 36 Electrical System Maintenance 36 Servicing the Battery 36 Servicing the Fuses 38 Drive System Maintenance 39 Adjusting the Tracking 39 Checking the Tire Pressure 39 Checking the Wheel Hub Slotted Nut 39 Adjusting the Caster Pivot Bearing 40 Cooling System Maintenance 40 Cleaning the Engine Screen and the Oil Cooler 40 Cleaning the Engine Fins 41 Brake Maintenance 4...

Page 4: ...cessories and attachments approved by the manufacturer Wear appropriate clothing including hard hat safety glasses and hearing protection Long hair loose clothing or jewelry may get tangled in moving parts Inspect the area where the equipment is to be used and remove all objects such as rocks toys and wire which can be thrown by the machine Use extra care when handling gasoline and other fuels The...

Page 5: ...nsfer to the front wheels may cause drive wheels to slip and cause loss of braking and steering Always avoid sudden starting or stopping on a slope If tires lose traction disengage the blades and proceed slowly off the slope Follow the manufacturer s recommendations for wheel weights or counterweights to improve stability Use extreme care with grass catchers or other attachments These can change t...

Page 6: ...nly replace blades Never straighten or weld them Keep hands and feet away from moving parts If possible do not make adjustments with the engine running Charge batteries in an open well ventilated area away from spark and flames Unplug charger before connecting or disconnecting from battery Wear protective clothing and use insulated tools Keep all parts in good working condition and all hardware tig...

Page 7: ...Slope Chart 7 ...

Page 8: ...afety 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 1 403005 1 523552 1 633462 1 643339 54 9220 58 6520 1 Grease 66 1340 68 8340 8 ...

Page 9: ...98 4387 1 Warning wear hearing protection 98 5954 103 5881 105 7798 105 7797 107 1621 107 1622 9 ...

Page 10: ...107 1857 107 2112 107 1860 107 1861 107 1864 107 1613 10 ...

Page 11: ...indness 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 108 5278 1 Read the Operator s Manual Manufacturer s Mark 1 Indicates the blade is identi ed as a part from the original machine manufactur...

Page 12: ...110 5731 1 Engine stop 5 Continuous variable setting 2 Engine run 6 Slow 3 Engine start 7 Power take off PTO 4 Fast 106 7492 12 ...

Page 13: ...106 9989 107 8076 1 Fast 2 Slow 3 Neutral 4 Reverse 13 ...

Page 14: ...liar with all the controls before you start the engine and operate the machine Figure 3 and Figure 4 Figure 4 1 Gas cap 4 Throttle 2 Choke 5 Power take off PTO 3 Ignition switch 6 Hour meter 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 4 14 ...

Page 15: ...ystem in place and in proper working condition In certain conditions during fueling static electricity can be released causing a spark which can ignite the gasoline vapors A fire or explosion from gasoline can burn you and others and can damage property Always place gasoline containers on the ground away from your vehicle before filling Do not fill gasoline containers inside a vehicle or on a truck o...

Page 16: ...Checking the Oil Level in Engine Maintenance page 32 Using the Rollover Protection System ROPS To avoid injury or death from rollover keep the roll bar in the raised locked position and use the seat belt Ensure that the rear part of the seat is secured with the seat latch There is no rollover protection when the roll bar is in the down position Lower the roll bar only when absolutely necessary Do ...

Page 17: ...ymbols in the safety section Knowing this information could help you or bystanders avoid injury Operating on wet grass or steep slopes can cause sliding and loss of control Wheels dropping over edges can cause rollovers which may result in serious injury death or drowning There is no rollover protection when the roll bar is down Always keep the roll bar in the raised and locked position and use th...

Page 18: ...he motion control levers Figure 16 out to the neutral lock position 2 Pull up and back on the parking brake lever to set the parking brake Figure 10 The parking brake lever should stay firmly in the engaged position Parking brake may not hold machine parked on a slope and could cause personal injury or property damage Do not park on slopes unless wheels are chocked or blocked Releasing the Parking ...

Page 19: ...rt Figure 14 When the engines starts release the key Important Do not engage starter for more than 10 seconds at a time If engine fails to start allow 30 second cool down period between attempts Failure to follow these instructions can burn out starter motor Figure 14 1 Off 3 Start 2 Run 7 After the engine starts move the choke to off Figure 12 If the engine stalls or hesitates move the choke back...

Page 20: ...release the pressure on the traction control levers and place in neutral 3 Place the throttle in the fast position Note Engaging the PTO with the throttle at the half or less position will cause excessive wear to the drive belts 4 Pull out on the power take off PTO switch to engage it Figure 15 Figure 15 1 PTO On 2 PTO Off Disengaging the PTO To disengage push the PTO switch to the Off position Fi...

Page 21: ...reverse the engine should stop Repeat for other motion control 5 Sitting on the seat disengage the parking brake move the PTO switch to off and move the motion control levers to neutral lock position Try starting the engine the engine should not crank Driving Forward or Backward The throttle control regulates the engine speed as measured in rpm revolutions per minute Place the throttle control in ...

Page 22: ...ke Remember to remove the key from the ignition switch Children or bystanders may be injured if they move or attempt to operate the tractor while it is unattended Always remove the ignition key and set the parking brake when leaving the machine unattended even if just for a few minutes Adjusting the Control Lever Resistance The top damper mounting bolt can be adjusted to obtain a desired motion co...

Page 23: ...y and wait for all moving parts to stop before leaving the operating position 3 After adjusting the height of cut remove the flange nut bushing spacer and bolt Figure 19 Figure 19 1 Outer roller 4 Bolt 2 Spacer 5 Nut 3 Bushing 4 Select a hole so that the outer roller is positioned to the nearest corresponding height of cut desired Figure 19 5 Install the outer roller bushing spacer bolt and nut Fig...

Page 24: ...locks swing the lever up to loosen the cam lock Figure 21 4 Adjust the baffle and cam locks in the slots to the desired discharge flow 5 Swing the lever back over to tighten the baffle and cam locks Figure 21 6 If the cams do not lock the baffle into place or it is too tight loosen the lever and then rotate the cam lock Adjust the cam lock until the desired locking pressure is achieved Figure 21 1 Cam...

Page 25: ...st Lever The lift assist lever is used along with the height of cut lever for raising the mower This allows for easier raising of the mower 1 Place your foot onto lift assist lever 2 Press on the lift assist lever while pulling up on the height of cut lever Figure 25 Figure 25 1 Lift Assist Lever Positioning the Seat The seat can move forward and backward Position the seat where you have the best ...

Page 26: ... 2 Rotate the by pass valves counterclockwise 1 turn to push This allows hydraulic fluid to by pass the pump enabling the wheels to turn Figure 28 Important Do not rotate by pass valves more than 1 turn This prevents valves from coming out of the body and causing fluid to run out Figure 28 1 By pass valve 2 Hydraulic tank 3 Disengage parking brake before pushing Changing to Machine Operation Rotate ...

Page 27: ... levers as anchors for tieing the machine down Secure a trailer to the towing vehicle with safety chains Driving on the street or roadway without turn signals lights reflective markings or a slow moving vehicle emblem is dangerous and can lead to accidents causing personal injury Do not drive machine on a public street or roadway Loading Machines Use extreme caution when loading units on trailers o...

Page 28: ...Cut grass slightly longer than normal to ensure the cutting height of the mower does not scalp any uneven ground However the cutting height used in the past is generally the best one to use When cutting grass longer than six inches tall you may want to cut the lawn twice to ensure an acceptable quality of cut Cut 1 3 of the Grass Blade It is best to cut only about 1 3 of the grass blade Cutting mo...

Page 29: ...of the Mower Clean Clean clippings and dirt from the underside of the mower after each use If grass and dirt build up inside the mower cutting quality will eventually become unsatisfactory Blade Maintenance Maintain a sharp blade throughout the cutting season because a sharp blade cuts cleanly without tearing or shredding the grass blades Tearing and shredding turns grass brown at the edges which ...

Page 30: ...rs Lubricate the machine with light oil Every 200 hours Change the engine oil lter Replace the fuel lter Grease the brake pivot and lever Every 250 hours Replace the primary air lter more often in duty or sandy conditions Every 500 hours Check the wheel hub slotted nut Adjust the caster pivot bearing Every 600 hours Replace the safety air lter more often in duty or sandy conditions Yearly Grease t...

Page 31: ... is done Refer to Adjusting the Caster Pivot Bearing in Drive System Maintenance page 39 2 Remove the hex plug Thread a grease zerk into the hole 3 Pump grease into the zerk until it oozes out around the top bearing 4 Remove the grease zerk in the hole Install the hex plug and cap Where to Add Grease Lubricate the grease fittings as shown on the Check Service Reference Aid decal Figure 30 Figure 30...

Page 32: ...ry filter out of the air cleaner body Figure 32 Avoid knocking the filter into the side of the body 6 Remove the safety filter only if you intend to replace it Never attempt to clean the safety filter If the safety filter is dirty then the primary filter is damaged and you should replace both filters 7 Inspect the primary filter for damage by looking into the filter while shining a bright light on the outs...

Page 33: ...for all moving parts to stop before leaving the operating position 3 Clean around the oil dipstick Figure 34 so dirt cannot fall into engine Figure 34 1 Dipstick end 3 Filler cap 2 Dipstick 4 Pull the oil dipstick and wipe the metal end clean Figure 34 5 Slide the oil dipstick fully into the engine Pull the dipstick out and look at the metal end Figure 34 If oil level is low slowly pour only enoug...

Page 34: ...Figure 36 Figure 36 1 Engine oil lter 3 Pour new oil of the proper type into the center hole in the new oil filter Stop pouring when the oil reaches the bottom of the threads Allow a minute or two for the oil to be absorbed by filter material 4 Apply a thin coat of new oil to the rubber gasket on the replacement filter Figure 37 5 Install the replacement oil filter to the filter adapter Turn the oil fil...

Page 35: ...r cleaner is dirty Important Never clean the spark plug s Always replace the spark plug s when it has a black coating worn electrodes an oily film or cracks Figure 39 1 Canter electrode insulator 3 Air gap not to scale 2 Side electrode 2 Check the gap between the center and side electrodes Figure 39 Bend the side electrode Figure 39 if the gap is not correct Installing the Spark Plug 1 Install the ...

Page 36: ...e and remove the key 3 Close the fuel shutoff valve Figure 40 4 Loosen the hose clamp at the fuel filter and slide it up the fuel line away from the fuel filter Figure 40 5 Disconnect the fuel line from the fuel filter Figure 40 6 Open the fuel shutoff valve Note Allow gasoline to drain into a fuel container can or drain pan Figure 40 Note Now is the best time to install a new fuel filter because the ...

Page 37: ...ving the operating position 3 Unlatch the seat and tilt the seat up 4 First disconnect the negative battery cable and ground wire from the negative battery terminal Figure 41 5 Slide the red terminal boot off the positive red battery terminal Then remove the positive red battery cable Figure 41 Figure 41 1 Battery 7 Washer 1 4 inch 2 Terminal boot 8 Locknut 1 4 inch 3 Positive battery cable 9 Batt...

Page 38: ...disconnect the charger leads from the battery posts Fig 67 Figure 42 4 Install the battery in the machine and connect the battery cables refer to Installing the Battery Note Do not run the machine with the battery disconnected electrical damage may occur Servicing the Fuses The electrical system is protected by fuses It requires no maintenance however if a fuse blows check component circuit for ma...

Page 39: ... 44 1 Pump rod 3 Tracking knob 2 Turn this way to track left 4 Turn this way to track right 5 Repeat this adjustment until the tracking is correct Checking the Tire Pressure Check the pressure at the valve stem after every 50 operating hours or monthly whichever occurs first Figure 45 Maintain the air pressure in the rear tires at 13 psi 90 kPa Uneven tire pressure can cause uneven cut Check the ti...

Page 40: ...the motion control levers to the neutral locked position and set the parking brake 2 Stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Remove the dust cap from caster and tighten lock nut Figure 47 Figure 47 1 Spring Washers 3 Dust Cap 2 Lock Nut 4 Tighten the locknut until the spring washers are flat and then back off a 1 4 turn to properl...

Page 41: ... is necessary loosen the jam nut below the spring and tighten the nut directly below the yoke Figure 50 Turn the nut until the correct measurement is obtained Tighten the two nuts together and repeat on opposite side of unit 4 Turn nuts clockwise to shorten spring length and turn counter clockwise to lengthen the spring 5 Engage parking brake lever up 6 Measure the distance between the trunnion ro...

Page 42: ... and remove the belt Figure 51 7 Install the new mower belt around the mower spindle pulleys mower idler pulley into the belt guides into rear idler arm assembly and the clutch Figure 51 8 Install the belt guide with a washer and nut onto the rear leftside pulley Note Check the amount of twist in the belt between the pulleys Ensure it is only what is specified in Figure 51 Figure 51 1 Clutch 6 Mowe...

Page 43: ...he tension Figure 54 7 To increase belt tension rotate the ratchet or breaker bar to move the fixed idler until you feel increased resistance and the spring loaded idler pulley stops moving Figure 54 Note Do not increase the belt tension beyond the point where the fixed idler arm stops 8 While holding the belt tension tighten the idler plate bolts that secure the idler plate Figure 54 Figure 54 1 Mo...

Page 44: ...h lever spring and rod separately Note Motion control levers must be installed correctly See Installing the Motion Control Levers in the set up instructions 1 Disengage the PTO move the motion control levers to the neutral locked position and set the parking brake 2 Stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Unlatch the seat and til...

Page 45: ...c motor oil or equivalent synthetic oil Important Use oil specified or equivalent Other fluids could cause system damage Hydraulic System Oil Capacity 67 oz 2 0 l Note There are two ways of checking the hydraulic oil One is when the oil is warm and one is when the oil is cold The baffle inside the tank has two levels depending if the oil is warm or cold 1 Position the machine on a level surface and s...

Page 46: ...e engine remove the key and wait for all moving parts to stop before leaving the operating position Important Do not substitute automotive oil filter or severe hydraulic system damage may result 3 Place drain pan under filter remove the old filter and wipe the filter adapter gasket surface clean Figure 61 Figure 61 1 Hydraulic lter 4 Apply a thin coat hydro fluid to the rubber gasket on the replacement...

Page 47: ...ate skin and cause injury If hydraulic fluid is injected into the skin it must be surgically removed within a few hours by a doctor familiar with this type of injury Gangrene may result if this is not done Keep body and hands away from pin hole leaks or nozzles that eject high pressure hydraulic fluid Use cardboard or paper to find hydraulic leaks Safely relieve all pressure in the hydraulic system b...

Page 48: ...erse Figure 63 Figure 63 1 Tracking knob 3 Adjustment bolt 2 Pump rod 4 Yoke 3 Move the motion control lever forward and reverse then back to neutral The wheel must stop turning or slightly creep in reverse 4 Open the throttle to fast Make sure wheel remains stopped or slightly creeps in reverse adjust if necessary Setting the Left hand Hydraulic Pump Neutral Position 1 Loosen the locknuts at the ...

Page 49: ...ed position and set the parking brake 3 Stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 4 Check tire pressure of all four tires If needed adjust to 13 psi 90 kPa 5 Lower the mower to the 3 inch 76 mm height of cut position 6 Inspect the four chains The chains need to have tension Note Adjust the rear chains to the top of the slot where the...

Page 50: ...2 Measure the right blade at the A location from a level surface to the cutting edge of the blade tip Figure 67 3 Record this measurement 4 Measure the right blade at the B location from a level surface to the cutting edge of the blade tip Figure 67 5 Record this measurement 6 The mower blade should be a 1 4 to 3 8 inch 6 to 10 mm lower at position A than at position B Figure 67 If it is not corre...

Page 51: ...eason because sharp blades cut cleanly without tearing or shredding the grass blades Tearing and shredding turns grass brown at the edges which slows growth and increases the chance of disease Check the cutter blades daily for sharpness and for any wear or damage File down any nicks and sharpen the blades as necessary If a blade is damaged or worn replace it immediately with a genuine Toro replace...

Page 52: ...mm If this dimension exceeds 1 8 inch 3 mm the blade is bent and must be replaced refer to Removing the Blades and Installing the Blades A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders Always replace bent or damaged blade with a new blade Never file or create sharp notches in the edges or surfaces of blade Removing the Blades Blades must be rep...

Page 53: ...tting 2 Install the spring disk and blade bolt The spring disk cone must be installed toward the bolt head Figure 73 Figure 73 1 Sail Area of Blade 4 Blade Bolt 2 Blade 5 Cone Towards Bolt Head 3 Spring Disk 3 Torque the blade bolt to 85 110 ft lb 115 150 N m Replacing the Grass De ector An uncovered discharge opening could allow the lawn mower to throw objects in the operator s or bystander s dir...

Page 54: ... Cleaning Cleaning Under the Mower Remove the grass buildup under the mower daily 1 Disengage the PTO move the motion control levers to the neutral locked position and set the parking brake 2 Stop the engine remove the key and wait for all moving parts to stop before leaving the operating position 3 Raise the mower to the transport position Waste Disposal Engine oil batteries hydraulic oil and eng...

Page 55: ...11 Prepare the machine for storage when non use occurs over 30 days Prepare machine for storage as follows A Add a petroleum based stabilizer conditioner to fuel in the tank Follow mixing instructions from stabilizer manufacture Do not use an alcohol based stabilizer ethanol or methanol Note A fuel stabilizer conditioner is most effective when mixed with fresh gasoline and used at all times B Run ...

Page 56: ...ails to keep running 4 Dirt water or stale fuel is in the fuel system 4 Contact an Authorized Service Dealer 1 Engine load is excessive 1 Reduce the ground speed 2 Air cleaner is dirty 2 Clean the air cleaner element 3 Oil level in the crankcase is low 3 Add oil to the crankcase 4 Cooling ns and air passages above the engine are plugged 4 Remove the obstruction from the cooling ns and air passages...

Page 57: ...unting bolts are loose 3 Tighten the engine mounting bolts 4 Loose engine pulley idler pulley or blade pulley 4 Tighten the appropriate pulley 5 Engine pulley is damaged 5 Contact an Authorized Service Dealer 6 Blade spindle is bent 6 Contact an Authorized Service Dealer Abnormal vibration 7 Motor mount is loose or worn 7 Contact an Authorized Service Dealer 1 Blade s not sharp 1 Sharpen the blade...

Page 58: ...drive belt and check adjusting shafts and belt guides for correct position 3 Deck belt is worn loose or broken 3 Install new deck belt 4 Deck belt is off pulley 4 Install deck pulley and check the idler pulley idler arm and spring for correct position and function Blades do not rotate 5 Broken or missing idler spring 5 Replace the spring 58 ...

Page 59: ...Schematics Wire Diagram Rev A 59 ...

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Page 63: ...cheduled for replacement as required maintenance in the written instructions must be warranted for the warranty period of two years If any such part fails during the period of warranty coverage it must be repaired or replaced by The Toro Company Any such part repaired or replaced under the warranty must be warranted for a time not less than the remaining warranty period B Any warranted part that i...

Page 64: ... maintenance service or parts such as lters fuel lubricants tune up parts blade sharpening brake and clutch adjustments Any product or part which has been altered or misused or required replacement or repair due to normal wear accidents or lack of proper maintenance Repairs necessary due to improper fuel contaminants in the fuel system or failure to properly prepare the fuel system prior to any pe...

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