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Belt Maintenance

Inspecting the Belts

Service Interval:

Every 100 hours

Check belts for cracks, frayed edges, burn marks or any
other damage. Replace damaged belts.

Replacing the Mower Belt

Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks
are signs of a worn mower belt. Replace the mower belt
if any of these conditions are evident.

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. Remove the belt covers.

4. Loosen the nut securing the idler plate and move

the idler plate to relieve the belt tension on the idler
pulley (Figure 50).

5. Remove the nut, washer and belt guide from the rear

leftside pulley.

6. Remove the mower belt from the belt guides and

remove the belt (Figure 50).

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 50).

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 50.

Figure 50

Clutch

Mower idler pulley

Mower belt

Belt guide installed

1/4 trun belt twist

Nut

Belt guide

Washer

Mower spindle pulley

10.

Rear left side pulley

9. Adjust the belt tension, refer to Adjusting the Mower

Belt Tension

10. Install the belt covers and close the latches

(Figure 51).

Figure 51

Belt cover

Insert slot into the tab

Latch

Содержание Z550 Z Master

Страница 1: ...ter with 52in 60in or 72in TURBO FORCE Side Discharge Mower Model No 74271 Serial No 280000001 and Up Model No 74272 Serial No 280000001 and Up Model No 74273 Serial No 280000001 and Up Register at www Toro com Original Instructions EN ...

Страница 2: ...om 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 provi...

Страница 3: ...e Fuel Tank 34 Electrical System Maintenance 35 Servicing the Battery 35 Servicing the Fuses 36 Drive System Maintenance 37 Adjusting the Tracking 37 Checking the Tire Pressure 37 Checking the Wheel Hub Slotted Nut 37 Adjusting the Caster Pivot Bearing 38 Cooling System Maintenance 39 Cleaning the Engine Screen and the Oil Cooler 39 Cleaning the Engine Fins 39 Brake Maintenance 39 Adjusting the Pa...

Страница 4: ...rea 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 They are flammable and vapors are explosive Use only an approved container Never refuel or drain the machine indoors Never remove gas cap or add fuel with engine running Allow engine to cool before refueling Do not smoke C...

Страница 5: ...e event of an emergency Be aware there is no rollover protection when the roll bar is down Check the area to be mowed and never fold the ROPS in areas where there are slopes drop offs or water Lower the rollbar only when absolutely necessary Do not wear the seat belt with the roll bar folded down Check carefully for overhead clearances i e branches doorways electrical wires before driving under an...

Страница 6: ...Slope Chart 6 ...

Страница 7: ...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 7 ...

Страница 8: ...98 4387 1 Warning wear hearing protection 98 5954 103 5881 105 7798 105 7797 107 1621 107 1622 107 1857 8 ...

Страница 9: ...107 2112 107 1860 107 1861 107 1864 107 1613 9 ...

Страница 10: ...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 Manufacturer s Mark 1 Indicates the blade is identified as a part from the original machine manufacturer 107 2102 110 5731 1 Engine stop 5 Continuous variable setting 2 Engine ...

Страница 11: ...106 7492 106 9989 107 8076 1 Fast 2 Slow 3 Neutral 4 Reverse 11 ...

Страница 12: ...lar maintenance Figure 4 Throttle Control The throttle control has two positions Fast and Slow Choke Use the choke to start a cold engine Blade Control Switch PTO The blade control switch PTO is used to engage the electric clutch to drive the mower blades with the motion control levers in the center un locked position Pull the switch up to engage the blades and release To disengage the blades push...

Страница 13: ...able and highly explosive A fire or explosion from 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 1 4 to 1 2 inch 6 to 13 mm below the bottom of t...

Страница 14: ...he machine to provide the following benefits Keeps gasoline fresh during storage of 90 days or less For longer storage it is recommended that the fuel tank be drained Cleans the engine while it runs Eliminates gum like varnish buildup in the fuel system which causes hard starting Important Do not use fuel additives containing methanol or ethanol Add the correct amount of gas stabilizer conditioner...

Страница 15: ...positions See Figure 5 for the positions 3 Install the two pins and secure them with the hairpin cotter pins Figure 6 Figure 5 1 Full down position 2 Down position with bagger installed Important Ensure that the rear part of the seat is secured with the seat latch 4 To raise the roll bar remove the hairpin cotter pins and remove the two pins Figure 6 5 Raise the roll bar to the upright position an...

Страница 16: ...und levels in excess of 85 dBA at the operators ear and can cause hearing loss through extended periods of exposure Wear hearing protection when operating this machine Wear protective equipment for your eyes ears feet and head when using this machine Figure 8 1 Warning wear hearing protection Operating the Parking Brake Always set the parking brake when you stop the machine or leave it unattended ...

Страница 17: ... starting a cold engine Figure 11 Note A warm or hot engine may not require choking After engine starts move choke control to Run position Figure 11 1 Choke on 2 Choke off 5 Move the throttle control to the Fast position before starting a cold engine Figure 12 Figure 12 1 Throttle fast 2 Throttle slow 6 Turn the ignition key to Start Figure 13 When the engines starts release the key Important Do n...

Страница 18: ...ion key and set the parking brake when leaving the machine unattended even if just for a few minutes Operating the Power Take Off PTO The power take off PTO switch starts and stops the mower blades and any powered attachments Engaging the PTO 1 If the engine is cold allow the engine to warm up 5 to 10 minutes before engaging the PTO 2 While seated in the seat release the pressure on the traction c...

Страница 19: ...control levers to neutral lock position Now start the engine While the engine is running center either motion control and move forward or 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 Fo...

Страница 20: ...e 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 con...

Страница 21: ... 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 18 Figure 18 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 18 5 Install the outer roller bushing spacer bolt and nut Fig...

Страница 22: ...loosen the cam lock Figure 20 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 20 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 20 1 Cam lock 3 Rotate cam to in...

Страница 23: ...s 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 24 Figure 24 1 Lift Assist Lever Positioning the Seat The seat can move forward and backward Position the seat where you have the best control of the machine and are most comfortable Important To adjust move the lever sideways to unlock seat...

Страница 24: ...lic fluid to by pass the pump enabling the wheels to turn Figure 27 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 27 1 By pass valve 2 Controls 3 Disengage parking brake before pushing Changing to Machine Operation Rotate the by pass valves clockwise 1 turn to operate machine Figure 27 Note Do not over t...

Страница 25: ...ol 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 trailer...

Страница 26: ...ght 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 more than that is not recommended unless grass is sparse or it is...

Страница 27: ...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 slows growth and increases the chance of disease Check the cutt...

Страница 28: ...r head cooling fins Inspect the belts for cracks and wear Check the hydraulic hoses Every 150 hours Lubricate the machine with light oil Every 200 hours Change the engine oil filter Replace the fuel filter Grease the brake pivot and lever Every 250 hours Replace the primary air filter more often in duty or sandy conditions Every 500 hours Adjust the caster pivot bearing Every 600 hours Replace the...

Страница 29: ...ne Refer to Adjusting the Caster Pivot Bearing in Drive System Maintenance page 37 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 29 Figure 29 Wher...

Страница 30: ...ner and pull the air cleaner cover off of the air cleaner body Figure 31 4 Clean the inside of the air cleaner cover with compressed air Figure 31 5 Gently slide the primary filter out of the air cleaner body Figure 31 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 dirt...

Страница 31: ...nge 57 ounces 1 7 l without a filter change 47 ounces 1 4 l Viscosity See the table below Figure 32 Checking the Engine Oil Level Service Interval Before each use or daily Note Check the oil when the engine is cold 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...

Страница 32: ...g the Engine Oil 2 Remove the old filter and wipe the filter adapter gasket surface Figure 35 Figure 35 1 Engine oil filter 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 ...

Страница 33: ...rs 1 Look at the center of the spark plug s Figure 38 If you see light brown or gray on the insulator the engine is operating properly A black coating on the insulator usually means the air 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 38 1 Canter electrode insulator 3 Air gap not to...

Страница 34: ...e and highly explosive A fire or explosion from gasoline can burn you and others and can damage property Drain gasoline from the fuel tank when the engine is cold Do this outdoors in an open area Wipe up any gasoline that spills Never smoke when draining gasoline and stay away from an open flame or where a spark may ignite the gasoline fumes 1 Park the machine on a level surface to ensure that the...

Страница 35: ... terminals and metal parts of the machine Incorrect battery cable routing could damage the machine 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 Disengage...

Страница 36: ...cific gravity This is especially important to prevent battery damage when the temperature is below 32 F 0 C 1 Remove the battery from the chassis 2 Charge the battery for 10 to 15 minutes at 25 to 30 amps or 30 minutes at 4 6 amps 3 When the battery is fully charged unplug the charger from the electrical outlet then disconnect the charger leads from the battery posts Figure 41 Figure 41 4 Install ...

Страница 37: ...ll joint and test the tracking Figure 43 6 Repeat this adjustment until the tracking is correct Figure 43 1 Right hand pump control rod 3 Locknut 2 Double nuts 4 Ball joint Checking the Tire Pressure Service Interval Every 50 hours or monthly whichever occurs first Check the pressure at the valve stem Figure 44 Maintain the air pressure in the rear tires at 13 psi 90 kPa Uneven tire pressure can c...

Страница 38: ... cotter pin Adjusting the Caster Pivot Bearing Service Interval Every 500 hours 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 Remove the dust cap from caster and tighten lock nut Figure 46 Figure 46 1 Spring Washers 3 Dust Cap ...

Страница 39: ...oper adjustment 1 Disengage brake lever lever down 2 Measure the length of the spring The measurement should be 2 3 4 inch 70 mm between washers Figure 49 Figure 49 1 Brake lever 4 Collar on brake rod 2 Spring 2 3 4 inches 70 mm 5 3 16 1 4 inch 5 7 mm 3 Adjusting nuts 6 Jam nut and yoke 3 If adjustment is necessary loosen the jam nut below the spring and tighten the nut directly below the yoke Fig...

Страница 40: ...elieve the belt tension on the idler pulley Figure 50 5 Remove the nut washer and belt guide from the rear leftside pulley 6 Remove the mower belt from the belt guides and remove the belt Figure 50 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 50 8 Install the belt guide with a washer and nut...

Страница 41: ...e tension Figure 53 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 53 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 53 Figure 53 1 M...

Страница 42: ... 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 lev...

Страница 43: ...draulic 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 set the parking brake 2 Clean the area around filler neck of hydraulic tank Figure 59 Figure 59 1 Cap 3 Cold fluid level ...

Страница 44: ... to stop before leaving the operating position Important Do not substitute automotive oil filter or severe hydraulic system damage may result 3 Apply a thin coat hydro fluid to the rubber gasket on the replacement filter Figure 60 Figure 60 1 Hydraulic filter 3 Adapter 2 Gasket 4 Place drain pan under filter remove the old filter and wipe the filter adapter gasket surface clean Figure 61 Figure 61...

Страница 45: ...tem Make sure all hydraulic fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to hydraulic system Setting the Hydraulic Pump Neutral Position Note Adjust the handle neutral first That needs to be correct before the following adjustment can be made Mechanical or hydraulic jacks may fail to support machine and cause a serious in...

Страница 46: ...g brake Refer to Starting and Stopping the Engine in Operation page 13 Note The motion control lever must be in neutral while making any adjustments Note The front nut on the pump rod has left hand threads 3 Adjust the pump rod length by rotating the double nuts on rod in the appropriate direction until wheel is still or slightly creeps in reverse Figure 63 4 Move the motion control lever forward ...

Страница 47: ... 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 they are attached to the mower If ...

Страница 48: ...hes 80 to 83 mm Figure 65 Note It is recommended that both sides of the mower are adjusted the same distance 9 Tighten the jam nut under the rear support arm and tighten the bolt securing the chain to the rear support arm 10 Adjust the opposite side if needed Adjusting the Front to Rear Mower Pitch 1 Position the right blade front to rear Figure 66 Figure 66 1 Measure here from blade to hard surfa...

Страница 49: ...then the spring 4 Lock the nut into position by tightening the spring jam nut Figure 67 Servicing the Cutting Blades Maintain sharp blades throughout the cutting season 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 ...

Страница 50: ...ld 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 replaced if a solid object is hit if the blade is out of balance or is bent To ensure optimum performance and continued safety conformance of the machine use genuine Toro rep...

Страница 51: ...he lawn mower to throw objects in the operator s or bystander s direction and result in serious injury Also contact with the blade could occur Never operate the lawn mower unless you install a cover plate a mulch plate or a grass chute and catcher Make sure the grass deflector is in the down position 1 Remove the locknut bolt spring and spacer holding the deflector to the pivot brackets Figure 73 ...

Страница 52: ...o the fans and shrouds could occur Figure 74 1 Hydraulic pump shrouds 2 Controls Cleaning Under the Mower Service Interval Before each use or daily 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 operati...

Страница 53: ... 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...

Страница 54: ...ugged 5 Clean or replace the fuel cap 6 Dirt in the fuel filter 6 Replace the fuel filter Engine loses power 7 Dirt water or stale fuel is in the fuel system 7 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 Engine overheats 3 Cooling fins and air passages above the engine are plugged 3 Remove ...

Страница 55: ... pressure Uneven cutting height 6 Blade spindle bent 6 Contact an Authorized Service Dealer 1 Drive belt is worn loose or broken 1 Check the belt tension 2 Drive belt is off pulley 2 Install 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...

Страница 56: ...Schematics Wire Diagram Rev A 56 ...

Страница 57: ...Notes 57 ...

Страница 58: ...Notes 58 ...

Страница 59: ...Notes 59 ...

Страница 60: ...is no other express warranty except for special emission system coverage on some products This express warranty does not cover the following Cost of regular 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...

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