Kubota Z121S-AU, Operator'S Manual

Page 1: ...1 S A U Z 1 2 5 E A U Z 1 2 5 S A U READ AND SAVE THIS MANUAL OPERATOR S MANUAL MODELS Z122E AU Z121S AU Z125E AU Z125S AU 1BDABDYAP0010 PRINTED IN U S A KUBOTA Corporation 2014 English AUS Code No K3014 7123 1 AS B 1 1 AK ...

Page 2: ...too can depend on KUBOTA Abbreviations Definitions ABBREVIATION LIST API PTO RH LH ROPS rpm SAE American Petroleum Institute Power Take Off Right hand and left hand sides are determined by facing in the direction of forward travel Roll Over Protective Structures Revolutions Per Minute Society of Automotive Engineers UNIVERSAL SYMBOLS As a guide to the operation of your machine various universal sy...

Page 3: ...rol system It will give you long satisfactory service To obtain the best use of your machine please read this manual carefully It will help you become familiar with the operation of the machine and contains many helpful hints about machine maintenance It is KUBOTA s policy to utilize as quickly as possible every advance in our research The immediate use of new techniques in the manufacturing of pr...

Page 4: ...if 12 Fuel Gauge 12 Hour Meter 12 COLD WEATHER STARTING 12 WARMING UP 13 Warm up and Transmission Oil in the Low Temperature Range 13 JUMP STARTING 13 STOPPING THE ENGINE 14 OPERATING THE MACHINE 15 OPERATING NEW MACHINE 15 Changing Lubricating Oil for New Machines 15 Engine Break in 15 Machine Break in 15 STARTING 16 Operator s Seat 16 Seat Belt 16 Light Switch 16 Mower Lift Pedal 17 Throttle Lev...

Page 5: ...125E 36 Cleaning Air Cleaner Element Z122E Z125E 37 EVERY 50 HOURS 39 Checking Engine Start System 39 Checking OPC System 40 Changing Engine Oil Z122E Z125E 40 Replacing Engine Oil Filter Z122E Z125E 41 Checking Muffler and Spark Arrester if equipped 42 EVERY 100 HOURS 43 Changing Engine Oil Z121S Z125S 43 Replacing Precleaner Element Except Z125E 43 Replacing Air Cleaner Element Z122E Z125E 43 Re...

Page 6: ...Engine Valve Clearance Z122E Z125E 55 EVERY 2 YEARS 55 Replacing Hydraulic Hose 55 Replacing Fuel Lines 55 Replacing Engine Breather Hose 55 SERVICE AS REQUIRED 56 Replacing Fuses 56 Checking and Replacing Blade 56 Mower Belt Replacement 58 ADJUSTMENT 59 MOTION CONTROL LEVER 59 HST NEUTRAL 59 MAXIMUM SPEED FORWARD 60 MOTION CONTROL LEVER ALIGNMENT 60 MOWER DECK LEVEL 61 ANTI SCALP ROLLERS 61 LEVEL...

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Page 8: ...S because welding bending drilling grinding or cutting may weaken the structure If any structural member of the ROPS is damaged replace the entire structure at your local KUBOTA Dealer 5 Always use the seat belt if the machine has the ROPS Check the seat belt regularly and replace if frayed or damaged 6 Do not allow any bystanders around or near machine during operation 7 Do not allow passengers c...

Page 9: ...ce 5 Watch where you are going at all times Watch for and avoid obstacles Be alert at curbs near trees and other obstructions and hidden hazards 6 Know what is behind you before backing up Look to the rear before and when backing Do not mow while in reverse unless absolutely necessary and make sure the area immediately behind you is clear of obstructions or holes and small children Use extra cauti...

Page 10: ... wheel is over the edge of cliff or ditch or if an edge caves in 3 Do not mow on wet grass Reduced traction could cause sliding and loss of control 4 Do not try to stabilize the machine by putting your foot on the ground 5 Do not use grass catcher on steep slopes 6 Do not start or stop suddenly when going uphill or downhill Avoid sudden start and stops on slopes 7 Never freewheel Do not let the ma...

Page 11: ...blades are sharp and can cut your hands Wrap the blade s or wear gloves and use extra caution when servicing them 19 Keep nuts and bolts especially blade attachment bolts tight and keep equipment in good condition 20 Never tamper with safety devices Check their operation for proper function regularly 21 Waste products such as used oil fuel coolant brake fluid and batteries can harm the environment...

Page 12: ... 5 SAFE OPERATION 5 DANGER WARNING AND CAUTION LABELS ...

Page 13: ...SAFE OPERATION 6 ...

Page 14: ... 7 SAFE OPERATION ...

Page 15: ...ger warning and caution labels with new labels from your local KUBOTA Dealer 4 If a component with danger warning and caution label s affixed is replaced with new part make sure new label s is are attached in the same location s as the replaced component 5 Mount new danger warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge 6 CARE OF DANGER WARNIN...

Page 16: ...ided C Warranty This machine is warranted under the Kubota Limited Express warranty a copy of which may be obtained from your selling dealer No warranty shall however apply if the machine has not been handled according to the instruction given in the Operator s Manual even it is within the warranty period C Scrapping the machine and its procedure To put the machine out of service correctly follow ...

Page 17: ...SERVICING OF MACHINE 2 Z121S Z125S 1 Engine serial No 1 Mower identification plate 2 Mower serial No 1 ROPS serial No ...

Page 18: ...apacities Fuel tank L U S gals 16 4 2 Engine crankcase with filter L U S qts 1 8 1 9 Transmission case including Rear axle gear case L U S qts 4 8 5 1 4 Dimensions Overall length mm in 1940 76 4 Overall width w o mower deck mm in 1207 47 5 Overall height With ROPS mm in 1652 65 0 Wheelbase mm in 1155 45 5 Min ground clearance mm in 123 4 84 W 48 123 4 84 W 54 Tread Front mm in 796 31 3 Rear mm in ...

Page 19: ...conditions temperature humidity altitude and engine to engine variability Due to manufacturing and capacity limitations Briggs Stratton may substitute an engine of higher rated power for this Series engine 3 Horsepower ratings exceed Society of Automotive Engineers Small Engine Test Code J1940 Actual engine horsepower is lower and affected by but not limited to accessories air cleaner exhaust char...

Page 20: ...th the KUBOTA Machine may result in malfunctions or failures of the machine damage to other property and injury to the operator or others Any malfunctions or failures of the machine resulting from use with improper implements are not covered by the warranty A Do not operate with trailer on incline greater than 10 Maximum loading weight Maximum total weight Tongue weight W Towing capacity W Front a...

Page 21: ...LUSTRATED CONTENTS 1 Parking brake lever 9 17 8 Cutting height control dial 22 2 Motion control lever 9 18 9 Key switch 11 3 Seat belt 16 10 Hour meter 12 4 Cup holder 11 PTO switch 23 5 Operator s seat 16 12 Throttle lever 17 6 ROPS 13 Light switch Z121S Z125S 16 7 Mower lift pedal 17 ...

Page 22: ...7 INSTRUMENT PANEL AND CONTROLS ILLUSTRATED CONTENTS 1 Anti scalp roller Front bolt shift type 22 ...

Page 23: ... in the figure 4 Place the mower deck at the right side of the machine 5 Slide the mower deck under the machine then lower mower lift links 6 Attach the lift links to the mower deck with attaching hardware 7 Attach the PTO belt to the engine pulley Refer the belt routing 8 After mounting the mower check the mower level If necessary adjust the mower level and anti scalp rollers ADJUSTING THE MOWER ...

Page 24: ...e engine while standing on the ground Start the engine only from operator s seat MOUNT AND DISMOUNT MACHINE SAFELY DO NOT step on either side of the mower deck when mounting and dismounting the machine When mounting the machine from either side step over the mower deck STARTING THE ENGINE To apply the parking brake Place the parking brake lever in the ENGAGED position To release the parking brake ...

Page 25: ...AST positions 3 Make sure that the PTO switch is in the DISENGAGED OFF position 1 PTO switch ENGAGED ON DISENGAGED OFF 4 Place the motion control levers in the NEUTRAL LOCK position 1 Motion control lever LH 2 Motion control lever RH A NEUTRAL LOCK Position B NEUTRAL Position held by hands C FORWARD D REVERSE 5 Set the throttle lever as follows 1 Throttle lever FAST SLOW CHOKE ...

Page 26: ...s cool down period between starting attempts A If the starter does not turn the engine over shut off the starter immediately Do not make further attempts to start the engine until the condition is corrected Do not jump start using another battery Consult your local KUBOTA dealer A Do not turn the key switch to the START position while the engine is running A When the temperature is below 0 32 run ...

Page 27: ... Fill the fuel on a level ground BHour Meter This meter gives readings for the number of hours the engine has been running COLD WEATHER STARTING If the ambient temperature is below 0 32 and the engine is very cold start it in the following manner 1 Place the throttle lever to the CHOKE position 2 Turn the key switch to the START position A Operate the starter 5 seconds A If the engine does not sta...

Page 28: ...om battery A If the machine battery is frozen do not jump start the engine A Do not connect the other end of negative jumper cable to the negative terminal of the machine battery When jump starting the engine follow the instructions below to start the engine safely 1 Bring a helper vehicle with a battery of the same voltage as the disabled machine within easy cable reach THE VEHICLES MUST NOT TOUC...

Page 29: ... key 3 Do not leave the key switch ON key in the ON position as the battery will discharge when the engine is not running 4 Apply the parking brake 5 Turn the carburetor fuel valve to STOP OFF position A Do not stop the engine when the machine is on an incline for a long time The engine oil may go into the carburetor and the muffler through the valve system A Place the throttle control lever in th...

Page 30: ... avoid serious injury or death A The machine relies upon the engine driven transmission for speed direction and motion control If the engine is not running the machine cannot be driven or controlled If the engine stops when operating on a slope apply the parking brake immediately to prevent machine runaway A Do not allow any person other than the driver to ride on the machine A Do not drive the ma...

Page 31: ... knob back C Arm rest Arm rest may be set at upright position if desired A After adjusting the operator s seat be sure to check and see that the seat is securely locked BSeat Belt To avoid serious injury or death A Always use the seat belt when the ROPS is installed A Do not use the seat belt if a foldable ROPS is down or there is no ROPS Adjust the seat belt for proper fit and connect to the buck...

Page 32: ...g height BThrottle Lever Moving the throttle lever backward decreases the engine speed and moving it forward increases the engine speed BParking Brake Lever To release the parking brake Place the parking brake lever in the DISENGAGED position 3 Start the engine See OPERATING THE ENGINE section 4 Raise the implement 1 Mower lift pedal A RAISE and LOCK position B LOWER position 5 Accelerate the engi...

Page 33: ...g is controlled by the motion control levers when the engine is running and the parking brake is released To avoid serious injury A No control is provided by the motion control levers when the engine is off C Neutral position A Grasp the motion control levers and move them inward from the NEUTRAL LOCK position so that the machine is in NEUTRAL Engine cannot be restarted C Forward and Reverse Motio...

Page 34: ...ight motion control lever further forward than the left motion control lever For forward travel to the left GENERAL RIGHT TURN A Push left motion control lever further forward than the right motion control lever For forward travel to the right SHARP ZERO LEFT TURN A Push right motion control lever forward and pull left motion control lever rearward at the same time SHARP ZERO RIGHT TURN A Push lef...

Page 35: ...e half speed position and push PTO switch to the DISENGAGE OFF position 5 Lower all implements to the ground 6 Turn off the engine and remove the key A Do not stop the engine when the machine is on an incline for a long time The engine oil may go into the carburetor and the muffler through the valve system A Place the throttle control lever in the half speed position to help prevent the engine fro...

Page 36: ...e bypass rods or transmission damage may occur A Never pull the rods with the engine running 1 While facing the machine from the rear pull the left side HST bypass rod out of the OPERATING POSITION hole and place it into the BYPASS POSITION hole See the figure below 2 Pull the right side HST bypass rod out of the OPERATING POSITION hole and pull to the BYPASS POSITION Continue to hold the right si...

Page 37: ... not too short To keep a green lawn never mow more than 1 3 of the height of the grass or a maximum of 25 mm 1 in in 1 mowing For extremely tall grass set the cutting height at maximum cutting height for the first mowing then reset to the desired height and mow again Allow the grass to grow to 80 mm 3 in then cut off only the top inch 5 For best appearance grass should be cut in the afternoon or e...

Page 38: ... place properly To avoid serious injury A Clear the work area of objects which might be picked up and thrown A Do not direct the opening of the deflector at bystanders especially children or animals Ejected objects may cause injury Plan your mowing carefully before starting operations A Keep bystanders and animals away from the mowing area A Be sure to disengage the PTO clutch of the mower before ...

Page 39: ...ve forward or backward A Never attempt to move the machine with the parking brake ON A Keep the engine running at full throttle for best results Control the travel speed with the motion control levers A During heavy duty use operate the machine at a slower ground speed or go over the area twice A Keep the mower deck in the raised position when the mower is disengaged A The mower will not cut clean...

Page 40: ...tighten to specified torque A Check all bolts frequently and keep them tightened BInflation Pressure Though the inflation pressure is factory set to the prescribed level it naturally drops slowly in the course of time Thus check it everyday and inflate as necessary WHEELS A When re fitting a wheel tighten the wheel bolt to the following torques then recheck after traveling 200 m 200 yards changing...

Page 41: ...ng brake 3 Lift the front of machine with a safe lifting device 4 Remove the nut and the wheel bolt 5 Remove the wheel from assembly yoke C Installing 1 Install the replacement wheel 2 Install the wheel bolt and the nut 3 Tighten the nut Reference 4 Lower machine Tightening torque 48 to 56 N m 36 to 41 lbf ft 4 9 to 5 7 kgf m 1 Nut 2 Wheel bolt 3 Yoke ...

Page 42: ...Transaxle fluid Change every 400Hr 53 5 Engine start system Check every 50Hr 39 6 OPC system Check every 50Hr 40 7 Air cleaner Precleaner element only Z122E Clean every 25Hr or every 1 year 36 2 Replace every 100Hr or every 1 year 43 55 Air cleaner element Clean every 25Hr or every 1 year 37 2 Replace every 100Hr or every 1 year 43 55 8 Fuel filter Check every 100Hr 46 Replace every 100Hr or every...

Page 43: ...he owner has the proper tools and is mechanically proficient 4 Consult your local KUBOTA Dealer for this service 5 On every after 500 Hr clean it if necessary 6 Not required unless engine performance problems are noted 13 Spark plug Check every 100Hr 45 Replace every 1 year 55 14 Hydraulic hose Check every 200Hr 51 Replace every 2 years 55 3 15 Engine breather hose Replace every 2 years 55 4 16 En...

Page 44: ...ry 50Hr 39 6 OPC system Check every 50Hr 40 7 Air cleaner Precleaner element Clean every 25Hr 36 1 Replace every 100Hr or every 1 year 43 55 1 Air cleaner element Replace every 100Hr or every 1 year 44 55 1 8 Fuel filter Check every 100Hr 46 Replace every 100Hr 46 2 9 Fuel line Check every 100Hr 46 Replace every 2 years 55 2 10 Battery condition Check every 100Hr 48 11 Throttle cable Adjust every ...

Page 45: ...ether is acceptable A Do not use unapproved gasoline such as E85 Do not mix oil in gasoline or modify the engine to run on alternate fuels This will damage the engine components and void the engine warranty A This engine is certified to operate on gasoline The emissions control system for this engine is EM Engine Modifications A High Altitude At altitudes over 5 000 feet 1524 meters a minimum 85 o...

Page 46: ...g position Do not keep the seat halfway 1 Pull the latch lever on the seat panel rearward 2 Raise the operator s seat to the resting position C Lower To avoid serious injury A Do not drop the seat to close it A Watch your hands Do not place your hands under the seat when closing 1 Lower the seat slowly to lock 1 Latch lever A PULL 1 Operator s seat ...

Page 47: ...il SAE according to the ambient temperatures See LUBRICANTS AND FUEL in MAINTENANCE section No Check item Ref Page Walking around the machine 1 Damage of machine body tightness of all bolts nuts and pins etc 2 Fuel and oil leak 3 Tire pressure wear and damage 25 34 4 Engine oil level 32 5 Fuel level 33 6 Air intake screen 34 7 Transaxle fluid level 35 8 Air cleaner precleaner element 36 9 Machine ...

Page 48: ...avoid deterioration in fuel quality or add fuel stabilizer to keep fuel fresh and stabilized A Fuel blend differs from season to season for the best seasonal engine performance To prevent engine performance troubles such as vapor lock or hard starting use fuel within the season in which the fuel is purchased A Infrequent use of the engine during a season can make fuel stale in the fuel tank of the...

Page 49: ...h or cloth 3 Remove the dust and all foreign material from the engine plate BChecking Tire Pressure To avoid serious injury A Do not attempt to mount a tire on a rim This should be done by a qualified person with the proper equipment A Always maintain the correct tire pressure Inflation pressure in front tires rises quickly when using compressed air Do not inflate tires above the recommended press...

Page 50: ...tank See LUBRICANTS AND FUEL in MAINTENANCE section A If oil level is low do not run engine Add the new oil to the prescribed level into the tank A Do not overfill the tank BChecking Movable Parts If any of the movable parts such as levers and pedals is not smoothly moved because of rust or anything sticky do not attempt to force it into motion In the above case remove the rust or the sticky objec...

Page 51: ...n under extremely dusty or dirty conditions 1 Loosen the air cleaner cover knobs and remove the air cleaner cover 2 Remove the air cleaner element with the precleaner and remove the precleaner from it Make sure the base and the sealing area is clean before reassembly is performed 3 Wash the precleaner in warm water with detergent Rinse the precleaner thoroughly until all traces of detergent are el...

Page 52: ...Air Cleaner Element Z122E Z125E Every 100 hours of operation or annually replace the paper element Check every 25 hours of operation More often under extremely dusty or dirty conditions Z122E 1 Loosen the air cleaner cover knobs and remove the air cleaner cover 2 Remove air cleaner element with precleaner 3 Remove the precleaner from the paper element 4 Gently tap the paper element to dislodge dir...

Page 53: ... pressurized air as this will damage the element Replace a dirty bent or damaged element with a genuine part Handle the new element carefully do not use if the sealing surfaces are bent or damaged 4 Clean the air cleaner base as required and check condition 5 Reinstall the air cleaner element and close the latch 6 Reinstall the air cleaner cover and secure it with 2 knobs A Operating the engine wi...

Page 54: ...n the key switch to START position 5 The engine must not crank Test 3 OPERATOR ON THE SEAT 1 Securely set the parking brake 2 Set the PTO switch to DISENGAGE OFF position 3 Grasp the motion control levers and move them inward from the NEUTRAL LOCK position to the NEUTRAL position and then release the levers 4 Turn the key switch to START position 5 The engine must not crank Test 4 OPERATOR ON THE ...

Page 55: ... set the parking brake 3 Set the PTO switch to ENGAGE ON position 4 Stand up Do not get off the machine 5 The engine must shut off A If the engine remains running in Test 1 through 2 consult your local KUBOTA Dealer to have the unit checked before operation BChanging Engine Oil Z122E Z125E To avoid serious injury A Be sure to stop the engine and remove the key before changing the oil A Allow engin...

Page 56: ...th 5 Place a new replacement filter in a shallow pan with the open end up Pour new oil of the proper type in through the threaded center hole Stop pouring when the oil reaches the bottom of the threads Allow a minute or 2 for the oil to be absorbed by the filter material 6 Apply a thin film of clean oil to the rubber gasket on the new oil filter 7 Install the new oil filter to the filter adapter H...

Page 57: ...equipped with a spark arrester as defined in Section 4442 maintained in effective working order Other states or federal jurisdictions may have similar laws Contact the original equipment manufacturer retailer or dealer to obtain a spark arrester designed for the exhaust system installed on this engine A Replacement parts must be of the same design and installed in the same position as the original...

Page 58: ...ne is warm Z121S Z125S 2 Fill with the new oil up to the upper level on the dipstick Z121S Z125S 3 To check the oil level Remove the dipstick wipe it clean insert it and draw it out again Check to see that the oil level is between the 2 marks A Do not overfill BReplacing Precleaner Element Except Z125E See Cleaning Precleaner Element Except Z125E in EVERY 25 HOURS in PERIODIC SERVICE section BRepl...

Page 59: ... element and install in air intake 7 Reinstall the air cleaner cover and secure with the 2 latches A Operating the engine with loose or damaged air cleaner components could allow unfiltered air into the engine causing premature wear and failure BCleaning Engine Shroud To avoid serious injury A Make sure engine is cool to the touch before removing shrouds 1 Remove the engine shroud mounting bolts a...

Page 60: ... spark plug 1 Remove the spark plug wire from spark plug 2 Use a spark plug wrench to remove plug A This engine is equipped with resistor type spark plug 3 Inspect spark plug for cracked porcelain pitted electrodes or other wear and damage Replace spark plug if necessary Z122E Z125E 1 Shroud 1 Shroud 1 Spark plug both sides 1 Spark plug both sides ...

Page 61: ...n whichever occurs first 1 The fuel line is made of rubber and ages regardless of service period 2 If the fuel line clamps and fuel filter are found damaged or deteriorated replace them A When the fuel line is disconnected for maintenance or repair close both ends of the fuel line with a piece of clean cloth or paper to prevent dust and dirt from entering In addition particular care must be taken ...

Page 62: ...47 PERIODIC SERVICE 1 Fuel line 2 Pipe clamp 3 Fuel filter 1 Fuel line 2 Pipe clamp 1 Fuel line 2 Pipe clamp 3 Fuel pump 1 Fuel line 2 Pipe clamp A Muffler B Carburetor ...

Page 63: ...battery shortens the service life and adds to maintenance costs The original battery is maintenance free but needs some servicing If the battery is weak the engine will be difficult to start and the lights will be dim It is important to check the battery periodically A When exchanging an old battery for new one use battery of equal specification in table below For non accessible maintenance free t...

Page 64: ...e machine for a long period remove the battery from machine adjust the electrolyte to the proper level and store in a dry place out of direct sunlight 2 The battery self discharges while it is stored Recharge it once every 3 months in hot seasons and once every 6 months in cold seasons BAdjusting Throttle Cable Z122E Z125E 1 Move the throttle lever to the FAST position 2 Attempt to pass a pin A wi...

Page 65: ...ipe off the filter adapter with a clean cloth 5 Place a new replacement filter in a shallow pan with the open end up Pour new oil of the proper type in through the threaded center hole Stop pouring when the oil reaches the bottom of the threads Allow a minute or 2 for the oil to be absorbed by the filter material 6 Apply a thin film of clean oil to the rubber gasket on the new oil filter 7 Install...

Page 66: ... to cool down sufficiently oil can be hot and may cause burns Check to see if hydraulic hoses are properly fixed every 200 hours of operation 1 Check to see that all lines and hose clamps are tight and not damaged 2 If hoses and clamps are found worn or damaged replace or repair them at once 1 Engine oil filter cartridge A MOUNTING SURFACE 1 Hydraulic hose 2 Hose clamp 3 Transaxle fluid tank 1 Hos...

Page 67: ...4 and filter guard 3 Clean any loose debris from around the perimeter of the oil filter 2 3 Place an oil drain pan 12 or more diameter and 8 qt capacity is optimal beneath the oil filter Remove the oil filter 2 and discard it A Always replace the filter when preforming any internal maintenance to the transaxle 4 After the oil has drained inspect all parts for excessive wear or damage Replace if ne...

Page 68: ...nted any time a hydrostatic system has been opened to facilitate maintenance or the oil has been changed The resulting symptoms in hydrostatic systems may be 1 Noisy operation 2 Lack of power or drive after short term operation 3 High operation temperature and excessive expansion of oil Before starting make sure the transaxle is at the proper oil level If it is not fill to the specifications outli...

Page 69: ...w 1 Locate the inspection windows on the clutch 2 Place a 0 4 mm 0 015 in feeler gauge in the slot between the rotor and the armature See the figure 3 Tighten or loosen the adjusting nut as needed to achieve the 0 4 mm 0 015 in air gap See the figure Perform this operation at all 3 inspection windows This adjustment should be done every 500 hours of operation or annually whichever comes first In c...

Page 70: ...122E Z125E in EVERY 50 HOURS in PERIODIC SERVICE section BReplacing Engine Oil Filter Z122E Z125E See Replacing Engine Oil Filter Z122E Z125E in EVERY 50 HOURS in PERIODIC SERVICE section BReplacing Fuel Filter Z122E Z125E See Checking Fuel Lines in EVERY 100 HOURS in PERIODIC SERVICE section BChecking Muffler and Spark Arrester if equipped See Checking Muffler and Spark Arrester if equipped in EV...

Page 71: ...dges should be kept sharp at all times Sharpen the cutting edges if they resemble blade B Replace the blades if they appear similar to blade C C Replacing 1 Dismount the mower deck from the machine See DISMOUNTING THE MOWER DECK in MOWER MOUNTING section Then turn it over to expose the blades 2 Wedge a block of wood between the blade and mower housing or use a box wrench over the pulley nut to pre...

Page 72: ... Then tighten the bolt securely 6 Before checking or replacing the blade wipe grass and mud off the top and inside of the mower Especially clean up the inside of the belt cover because otherwise the belt life will be reduced RCK48P RCK54P A Tighten the bolts of the outer blades from 103 to 118 N m 76 to 87 lbf ft of torque A The blade bolts have Right hand threads Turn them counterclockwise to loo...

Page 73: ...UNTING THE MOWER DECK 2 Remove the left and right hand shield from the mower deck 3 Remove the tension pulley and remove the belt 4 To install a new belt reverse the above procedure A Tighten the tension pulley bolt securely 77 6 to 90 2 N m 8 0 to 9 2 kgf m 57 1 to 66 5 lbf ft 1 Tension pulley 2 Belt 3 Bolt 4 Shield ...

Page 74: ...OTA Dealer A Right and left motion control levers can be adjusted independently BHST NEUTRAL 1 Lift up and secure with jack stands or blocking the rear of the machine frame 2 Remove both rear wheels 3 Start the engine and run at maximum speed 4 Place the motion control lever in NEUTRAL LOCK position 5 Loosen the 3 bolts of the guide plate Adjust the guide plate position until the rear axle rotatio...

Page 75: ...e to backward 5 Tighten 2 front bolts securely BMAXIMUM SPEED FORWARD Consult your local KUBOTA Dealer for this service BMOTION CONTROL LEVER ALIGNMENT C Check the alignment Check the gap and space between the levers at the maximum forward position If positions of the control levers are unequal an adjustment is necessary To avoid serious injury A Park the machine on a firm and level surface A Stop...

Page 76: ... by having the anti scalp rollers adjusted off the ground Check anti scalp roller adjustments each time the mower deck cutting height is changed It is recommended that all the anti scalp rollers be kept off the ground to minimize scuffing 1 Check the machine tire pressure Inflate tires to the correct pressure See TIRES AND WHEELS section 2 Start the engine 3 Raise up the mower deck to the transpor...

Page 77: ...ce and ground 6 Check that the left side blade is same height The difference between both measurements should be less than 3 mm 1 8 in 7 If the Side to Side adjustment is not within the given tolerance adjustment is necessary C Adjusting level Side to Side 1 Raise up the mower deck to the transport position Also the top end 2 Turn the cutting height set dial to the 3 in cutting height position 3 P...

Page 78: ...me dimension The difference between both measurements should be less than 6 mm 1 4 in Front side must be lower than rear side 8 If the Front to Rear adjustment is not within the given tolerance adjustment is necessary C Adjusting level Front to Rear 1 Raise up the mower deck to the transport position Also the top end 2 Turn the cutting height set dial to the 3 in cutting height position 3 Place 51...

Page 79: ... 3 3 0 3 5 3 8 lbf ft N m kgf m 35 42 47 5 57 0 4 84 5 82 45 54 61 0 73 2 6 22 7 47 M10 lbf ft N m kgf m 35 5 41 2 48 1 55 8 4 9 5 7 44 9 52 1 60 8 70 5 6 2 7 2 1 2 lbf ft N m kgf m 80 96 108 5 130 2 11 07 13 29 110 132 149 2 179 0 15 22 18 27 M12 lbf ft N m kgf m 57 2 66 5 77 5 90 1 7 9 9 2 76 0 86 8 103 117 10 5 12 0 9 16 lbf ft N m kgf m 110 132 149 2 179 0 15 22 18 27 160 192 217 0 260 4 22 14...

Page 80: ...9 3 45 1 42 2 2 9 4 0 4 6 4 3 0 3 35 4 41 2 38 3 2 9 48 1 55 9 52 0 3 9 4 9 5 7 5 3 0 4 M12 17 or 19 46 3 53 5 49 9 3 6 62 8 72 6 67 7 4 9 6 4 7 4 6 9 0 5 57 1 66 5 61 8 4 7 77 6 90 2 83 9 6 3 8 0 9 2 8 6 0 6 M14 19 or 22 79 6 92 6 86 1 6 5 107 9 125 5 116 7 8 8 11 0 12 8 11 9 0 9 91 1 108 5 99 8 8 7 123 6 147 0 135 3 11 7 12 6 15 0 13 8 1 2 A Figure 7 on the top of the bolt indicates that the bol...

Page 81: ...n while in storage Recharge it once a month in hot seasons and once every 2 months in cold seasons 7 Drain fuel tank fuel lines and carburetor or use a fuel stabilizer to prevent deterioration of the gasoline If you choose to use a fuel stabilizer follow the manufacturers recommendations and add the correct amount for the capacity of the fuel system Fill the fuel tank with clean fresh gasoline Run...

Page 82: ...r A Fuel hose or fuel filter clogged or damaged A Clean or replace fuel lines and see your Kubota dealer A Air cleaner is clogged A Clean or replace the air cleaner A Spark plug defective A Adjust the spark plug gap or replace the spark plug A Check the spark plug wire connection A Fuse is blown A Replace the fuse A Engine oil viscosity is wrong A Use oils of different viscosities depending on amb...

Page 83: ...uel filter A Air cleaner is clogged A Clean or replace the air cleaner element A Choke is not fully opened A Check the choke position Exhaust fumes are colored White or Blue A Excessive engine oil A Reduce to the specified oil level A Piston ring is worn or stuck A See your Kubota dealer Engine overheats A Engine is overloaded A Lower speed or reduce load A Engine oil is insufficient A Replenish e...

Page 84: ...ctrolyte level A Battery was used too much without recharging A Charge battery sufficiently A Charge the battery properly Recharging is impossible A Battery life expired A Replace battery Terminals are severely corroded and heat up A Poor terminal connection A Clean the terminal and tighten securely A Keep the terminal clean and tight Apply grease and treat with anti corrosives Battery electrolyte...

Page 85: ...t engine rpm A Grass too long A Cut grass twice A Blades dull or damaged A Replace blades or have blades sharpened A Debris in mower deck A Clean mower deck Uneven cut A Mower deck not level A Level mower deck A Ground speed too fast A Slow down A Blades dull A Have blades sharpened A Blades worn or damaged A Replace blades A Low tire inflation A Add air to correct pressure A Anti scalp rollers no...

Page 86: ...ged pulleys A Replace pulleys A Pulleys out of alignment A Check pulleys A Blades out of balance A Have blades balanced Mower loads down machine A Engine rpm too low A Mow at full throttle check and reset engine rpm A Ground speed too fast A Slow down A Debris wrapped around mower spindles A Clean mower A Front of deck too low A Adjust mower deck See MOWER DECK LEVEL in ADJUSTMENT section Symptom ...

Page 87: ...ydraulic Hose 51 Hydraulic Hose 55 Hydrostatic Transaxle Bypass Rods 21 Immediately Stop the Engine if 12 Inflation Pressure 25 Inflation Pressure 34 Key Switch 11 LEVEL MOWER DECK Front to Rear 63 LEVEL MOWER DECK Side to Side 62 Light Switch 16 Lubricating Oil for New Machines 15 Machine Break in 15 MAXIMUM SPEED FORWARD 60 Motion Control Lever 18 MOTION CONTROL LEVER ALIGNMENT 60 Movable Parts ...