Kubota Z723 Operator'S Manual Download

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PERIODIC SERVICE

ENGLISH

EVERY 200 HOURS

Checking Hydraulic Hose

To avoid serious injury:

Be sure to stop the engine, remove the key, and
relieve pressure before checking and replacing
the hydraulic hose.

Allow the transmission case 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) Mower belt tension pivot

(1) Hydraulic hose (LH, RH)
(2) Hose clamp (LH, RH)
(3) Transaxle fluid expansion tank (LH, RH)

(1) Hose clamp (LH, RH)

Summary of Contents for Z723

Page 1: ...DO NOT REMOVE OPERATOR S MANUAL 1BDABEAAP0010 READ AND SAVE THIS MANUAL MODELS ENGLISH Z723 Z724 Z725 K3811 7121 3 ...

Page 2: ...ndication of their meaning Safety Alert Symbol Read Operator s Manual Gasoline Fuel Fuel Level Parking Brake Engaged position Parking Brake Disengaged position Battery Charging Condition Engine Stop Engine Run Starter Control Power Take Off Switch Control Off Position Disengaged Power Take Off Switch Control On Position Engaged Hours Cutting Height Fast Slow Engine Speed Control Choke This spark i...

Page 3: ...control 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 o...

Page 4: ...y Checker TM 15 Fuel Gauge 15 Hour Meter 15 COLD WEATHER STARTING 16 WARMING UP 16 Warm up and Transmission Oil in the Low Temperature Range 16 JUMP STARTING 16 STOPPING THE ENGINE 17 OPERATING THE MACHINE 18 OPERATING NEW MACHINE 18 Changing Lubricating Oil for New Machines 18 Machine Break in 18 OPERATING FOLDABLE ROPS 19 To Fold the ROPS 19 To Raise the ROPS to Upright Position 20 Adjustment of...

Page 5: ...reen 41 Checking Tire Pressure 42 Inflation Pressure 42 Checking Transaxle Fluid Level 42 Checking Dial Cam Rotation Force 43 Checking Movable Parts 43 EVERY 50 HOURS 43 Checking Engine Start System 43 Checking OPC System 44 Greasing 45 Checking Muffler and Spark Arrester if equipped 45 EVERY 100 HOURS 46 Changing Engine Oil 46 Checking Carbon Canister Air Filter 47 Checking Air Cleaner Outer Elem...

Page 6: ...Areas 61 Checking Muffler and Spark Arrester 61 EVERY 2 YEARS 61 Replacing Hydraulic Hose 61 Replacing Fuel Lines 61 Replacing Carbon Canister Air Filter 61 SERVICE AS REQUIRED 61 Replacing Fuses 61 Checking and Replacing Blade 62 Mower Belt Replacement 63 ADJUSTMENT 64 MOTION CONTROL LEVER 64 HST NEUTRAL 64 MOTION CONTROL LEVER FORCE 65 MAXIMUM SPEED FORWARD 66 MOTION CONTROL LEVER ALIGNMENT 66 M...

Page 7: ......

Page 8: ...upright and locked position and the seat belt fastened for all other operations If the ROPS is loosened or removed for any reason make sure that all parts are reinstalled correctly before operating the machine Never modify or repair a ROPS 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 yo...

Page 9: ... 4 Park the machine on a firm and level surface 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 obstruction...

Page 10: ...urn on slopes unless necessary If necessary turn uphill slowly and gradually 2 Do not mow near drop offs ditches or embankments The mower could suddenly turn over if a 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...

Page 11: ...ts have been tightened to the specified torque 14 Do not make adjustments or repairs with the engine running 15 Keep machine free of grass leaves or other debris build up 16 Do not change the engine governor setting or overspeed the engine 17 Do not run a machine inside a closed area 18 Mower blades are sharp and can cut your hands Wrap the blade s or wear gloves and use extra caution when servici...

Page 12: ...e danger of exhaust fume poisoning do not operate the engine in a closed building without adequate ventilation 4 To reduce fire hazards clean the machine thoroughly before storage Dry grass and leaves around the engine and muffler may ignite ...

Page 13: ...SAFE OPERATION 6 ENGLISH 5 DANGER WARNING AND CAUTION LABELS ...

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

Page 15: ...SAFE OPERATION 8 ENGLISH ...

Page 16: ... 9 SAFE OPERATION ENGLISH ...

Page 17: ...g danger 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 W...

Page 18: ... 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 the ...

Page 19: ...SERVICING OF MACHINE 2 ENGLISH 1 ROPS serial No ...

Page 20: ...on case L U S qts RH 3 3 3 5 3 LH 3 3 3 5 3 Dimensions Overall length mm in 2130 83 9 Overall width w o mower deck mm in 1280 50 4 1390 54 7 Overall height With ROPS mm in 1781 70 1 Wheelbase mm in 1294 50 9 Min ground clearance mm in 130 5 12 W 48 130 5 12 W 54 130 5 12 W 60 Tread Front mm in 954 37 6 Rear mm in 1020 40 2 1083 42 6 Weight W MOWER DECK kg lbs 530 1168 with 48 536 1182 with 54 550 ...

Page 21: ...tice and without incurring obligation 3 Oil amount when the oil level is at the upper level Model RCK48P 723Z RCK54P 724Z RCK60P 725Z PRO Commercial Deck Fabricated deck Suitable machine Z723KH Z724KH Z725KH Mounting method Parallel linkage Adjustment of cutting height Dial gauge Cutting width mm in 1219 48 1372 54 1524 60 Cutting height mm in 25 to 127 1 0 to 5 0 Weight Approx kg lbs 102 225 110 ...

Page 22: ...chine 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 These limits include operator weight with seat in rearmost position Maximum loading weight Implement weight W Maximum total weight Front axle Wf Rear axle W...

Page 23: ... 12 23 10 Cutting height control dial 28 2 Parking brake lock pedal 12 23 11 Key switch 14 3 Mower lock lever 22 12 Easy checker TM 15 4 Motion control lever 12 23 13 Choke lever 12 5 Seat belt 21 14 Hour meter 15 6 Cup holder 15 PTO switch 31 7 Operator s seat 20 16 Fuel gauge 15 8 ROPS 19 17 Throttle lever 23 9 Mower lift pedal 22 ...

Page 24: ...7 INSTRUMENT PANEL AND CONTROLS ENGLISH ILLUSTRATED CONTENTS 1 Anti scalp roller Front bolt shift type 28 ILLUSTRATED CONTENTS 1 Anti scalp roller Front bolt shift type 28 ...

Page 25: ... rollers to 25 4 mm 1 in position See ADJUSTING CUTTING HEIGHT in OPERATING THE MOWER section 4 Go backward so that right and left front tires would be on the board 38 1 mm 1 5 in high A Use a board more than 133 mm 5 25 in wide and 1600 mm 63 0 in long A Make sure that right and left front tires are firm on the board 5 Make sure the direction of the front tires is as shown in the figure 6 Place t...

Page 26: ...haft from the hole in the rear right side lift link 11 Attach the mower belt to the PTO clutch pulley 12 Remove the step See HOW TO OPEN THE STEP in PERIODIC SERVICE section 13 Turn the tension arm counterclockwise with a square wrench 1 Shaft 2 Lift link 3 Frame D 14 mm 0 55 in L More than 150 mm 6 in 1 Lift link 2 Clevis pin 3 Plain washer 4 Snap ring P OUTSIDE 1 Mower belt 2 PTO clutch pulley 1...

Page 27: ...pin 3 as shown in figure B Figure A Figure B 15 After mounting the mower check the mower level If necessary adjust the mower level and anti scalp rollers ADJUSTING THE MOWER See OPERATING THE MOWER section 1 Mower belt 2 PTO clutch pulley A Mower tension arm area B PTO clutch area 3 Pin 1 4 Pin 2 5 Tension pulley 6 Idler pulley 7 Belt between the idler pulley and PTO clutch pulley 8 Belt between t...

Page 28: ...ed on the board 2 Adjust the anti scalp rollers to 25 4 mm 1 in position See ADJUSTING CUTTING HEIGHT in OPERATING THE MOWER section 3 Put a 14 mm 0 55 in x 150 mm 6 in shaft in the hole of the rear right side lift link 4 Remove the mower belt 5 Remove 4 clevis pins mounting the mower deck 6 Push the mower lift pedal toward the seat and remove the 14 mm 0 55 in shaft from the hole in the rear righ...

Page 29: ...n 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 Depress the parking brake pedal firmly with the left side of your right foot Keeping the parking brake pedal depressed use the right side of your right foot to depress the parking brake lock pedal Then release t...

Page 30: ... FAST positions 1 Parking brake pedal 2 Parking brake lock pedal 3 Right foot 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 ...

Page 31: ...ot start allow 60 seconds 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 temper...

Page 32: ...ine goes below the prescribed level the warning lamp in the Easy Checker TM will come on If this should happen during operation stop the engine immediately and check level of engine oil BFuel Gauge The fuel gauge indicates the fuel level A Do not refuel over F Fill the tank only to the bottom of the filler neck in the fuel tank A Fill the fuel on a level ground BHour Meter This meter gives reading...

Page 33: ...s service life will be shortened JUMP STARTING To avoid serious injury A Keep cigarettes sparks and flames away from 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 veh...

Page 34: ...emove the 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 le...

Page 35: ...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 machine close to the edges of ditches or banks which may co...

Page 36: ...S check for any possible interference with installed implements and attachments If interference occurs contact your KUBOTA Dealer BTo Fold the ROPS 1 Unscrew the knob bolts 1 to 2 turns 2 Remove both lock pins 3 Fold the ROPS To avoid personal injury A Hold the ROPS tightly with both hands and fold the ROPS slowly and carefully 4 Align lock pin holes and insert both lock pins and secure them with ...

Page 37: ...right position and secured with the hair pins BAdjustment of Foldable ROPS A Adjust free fall of the ROPS upper frame regularly A If you feel less friction when folding the ROPS tighten the nut 1 until you feel the right friction in the movement and then replace the hair pin STARTING BOperator s Seat To avoid serious injury A Make adjustments to the seat only while the machine is stopped A Make su...

Page 38: ...angle 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 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 buckle The seat belt is an auto locking retractable type 1 Armrest angle adjustm...

Page 39: ...ock lever in LOCK position 2 Push mower lift pedal to end of pedal stroke TO LOWER MOWER FROM CARRY POSITION 1 While pushing mower lift pedal to end of stroke set mower lock lever to UNLOCK position 2 Slowly release mower lift pedal 3 Raise the implement 1 Mower lock lever L LOCK 1 Mower lift pedal P PUSH 1 Mower lift pedal P PUSH 1 Mower lock lever U UNLOCK ...

Page 40: ...n direction changes could cause loss of control or damage to the machine or property A Do not make sharp turns at high speeds Fast and sharp turns could cause loss of control A Motion control levers must be in NEUTRAL LOCK position to safely enter and exit the operator s seat or to carry out maintenance and safety checks A This machine can make sharp turns Always make sure your intended path is cl...

Page 41: ...n forward motion To move reverse Pull both control levers slowly rearward at the same time to begin reverse motion To stop Move and hold both motion control levers to the NEUTRAL position until the machine comes to a stop To avoid serious injury A The motion control lever adjustment is important to ensure the machine operates properly A The motion control linkages are adjustable If adjustment is r...

Page 42: ...y A The parking brake pedal is for parking and emergency use only If the parking brake is applied when the motion control levers are not in NEUTRAL LOCK position the engine will stop immediately This feature is to prevent brake and transmission damage during operation 1 Move both motion control levers to the NEUTRAL position to stop the machine 2 Move both motion control levers to NEUTRAL LOCK pos...

Page 43: ...ine A Remove the key A Place the motion control levers in the NEUTRAL LOCK position If necessary to park on an incline be sure to chock the wheels on the downhill side to prevent accidental rolling of the machine TRANSPORTING 1 Transport the machine on a trailer A Turn the fuel valve to the OFF position A Fasten the machine to the trailer 2 Do not attempt to tow this machine or damage to the trans...

Page 44: ... push the machine without rotating the bypass levers or transmission damage may occur A Never rotate the levers with the engine running 1 From the front of the transaxle rotate the bypass lever to the right Do this for both transaxle LH and RH See the figure below 2 After moving the machine rotate both the right side and left side bypass levers completely to the left 1 Bypass lever R ROTATE THE LE...

Page 45: ... 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 evening when it is free o...

Page 46: ... normal operating condition To minimize gouging and roller damage or wear the anti scalp rollers will maintain the ground clearance of 6 mm 0 25 in A Never allow roller to contact the ground continuously as premature roller wear may develop if set incorrectly A Anti scalp rollers must maintain a minimum clearance of 6 mm 0 25 in to the ground BOLT 1 Anti scalp roller Front bolt shift type 1 Anti s...

Page 47: ... clearance mm Ref 1 00 25 1 6 1 25 32 12 1 50 38 19 1 75 44 25 2 00 50 2 19 2 25 58 25 2 50 64 3 19 2 75 70 25 3 00 76 31 1 3 25 83 38 2 3 50 89 44 2 3 75 95 51 2 4 00 102 57 2 4 25 108 63 2 4 50 114 70 2 4 75 121 76 2 5 00 127 83 2 1 For cutting heights above 3 0 The anti scalp rollers will still be effective against scalping 2 Use it if necessary ...

Page 48: ...ury or death A Engine components can get extremely hot from operation To prevent severe burns do not touch these areas while the engine is running or immediately after it is turned off Never operate the engine without heat shields or guards 1 Sit on the operator s seat 2 Start the engine 3 Engage the PTO switch 4 Disengage the parking brake 5 Speed up the engine by moving the throttle lever forwar...

Page 49: ...sure 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 Z725 Z724 Z723 WHEELS A When re fitting a wheel tighten the wheel bolt to the following torques then recheck after traveling 200 m 200 yards changing directions several times Wheels with beveled or tapered holes Use the tapered wh...

Page 50: ...th nylon sleeve and the wheel bolt 5 Remove the wheel and dust covers from assembly yoke C Installing 1 Install the replacement wheel and dust covers 2 Install the wheel bolt and the lock nut with nylon sleeve 3 Tighten the nut 4 After installing add grease to the nipples A Insert the wheel bolt from the outside of the yoke A Tighten the nut gradually until wheel bearing play is eliminated and whe...

Page 51: ...ester Check every 50Hr 45 10 Air cleaner Outer element Check every 100Hr 47 1 Replace every 250Hr 57 Inner element Check every 250Hr 57 1 Replace every 500Hr 60 11 Carbon canister air filter Check every 100Hr 47 1 Replace every 2 years 61 2 12 Fuel filter Check every 100Hr 48 Replace every 200Hr 57 13 Fuel line Check every 100Hr 48 Replace every 2 years 61 2 14 Battery condition Check every 100Hr ...

Page 52: ...cement of the emission control devices and systems should be performed by a qualified repair establishment or individual which has the experience and equipment to perform such work See the Emissions Warranty Statement 2 To ensure the best quality and reliability use new KUBOTA Genuine parts or their equivalents for repair and replacement whenever you have maintenance done 25 Combustion chamber Cle...

Page 53: ...MAINTENANCE 36 ENGLISH PERIODIC SERVICE CHART LABEL 1 Part No K3811 6551 ENGLISH 2 Part No K3811 6552 SPANISH ...

Page 54: ...on at altitudes above 4000 ft 1219 meters Operation without this kit will cause decreased performance increased fuel consumption and increased emissions This engine should be operated in its original configuration below 4000 ft 1219 meters as damage may occur if high altitude carburetor kit is installed and operated below 4000 ft 1219 meters A Indicated capacity of fuel is manufacture s estimate P...

Page 55: ...tep use grip to rotate the step in A direction then remove the step in B direction HOW TO RAISE THE OPERATOR S SEAT C Raise To avoid serious injury A Fully raise the operator s seat To the resting position Do not keep the seat halfway 1 Slide seat to rearmost position 2 Pull the latch lever on the seat panel rearward 1 Step 2 Grip A ROTATE B REMOVE 1 Seat slide lever A UNLOCK 1 Latch lever ...

Page 56: ...ess of all bolts nuts and pins etc 2 Fuel and oil leak 3 Tire pressure wear and damage 32 42 4 Engine oil level 40 5 Fuel level 40 6 Transaxle fluid level 42 7 Machine body cleaning 8 Clean area around muffler engine and cutting height cam Mower 1 Check all hardware 2 Make sure all pins are in place 3 Mower deck cleaning 4 Make sure blade bolts are tight 62 5 Blades and belt wear or damage 62 Whil...

Page 57: ...not smoke while filling the fuel tank or servicing the fuel system Fill fuel tank only to bottom of filler neck Do not fill completely full The empty space in the tank allows gasoline to expand when it heats up Never remove the fuel tank cap or add fuel when the fuel tank is hot Check the fuel level Take care that the fuel tank does not become empty A Do not mix oil with gasoline A Tighten the fue...

Page 58: ...he best results use unleaded fuel with a minimum of 87 octane BChecking and Cleaning Air Intake Screen To avoid serious injury A Be sure to stop the engine and remove the key before cleaning A Make sure that the engine is cool to the touch before cleaning A The air intake screen and air intake area must be clear of debris to prevent the engine from overheating Daily or after every 5 hours of opera...

Page 59: ...e and remove the key 2 Check to see that the oil level lies between the MAX and MIN lines while the machine and oil are at ambient temperature If the level is too low add the new oil to the prescribed level into the expansion tank See LUBRICANTS AND FUEL in MAINTENANCE section 3 Do not overfill past MAX line Oil expands with heat and may leak from cap during usage if overfilled A If oil level is l...

Page 60: ...Please check these Engine Start System periodically It is recommended to check the Engine Start System before daily operation To avoid serious injury A Do not allow anyone near the machine while testing A If the machine does not pass one of the following tests do not operate the machine See your local KUBOTA Dealer A Sit on operator s seat for all tests except for Test 1 A Check the following test...

Page 61: ... shut off A If the engine remains running in Test 5 consult your local KUBOTA Dealer to have the unit checked before operation BChecking OPC System The OPC Operator Presence Control system in your machine are designed to protect you while operating Please check these OPC system periodically It is recommended to check the OPC system before daily operation To avoid serious injury A Do not allow anyo...

Page 62: ... cylinder area A It is a violation of California Public Resource Code Section 4442 to use or operate the engine on any forest covered brush covered or grass covered land unless the exhaust system is 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 r...

Page 63: ...k the drain hose direct the hose down and remove the drain plug and oil level dipstick A The used oil can be drained out more easily if the engine is warm 2 After all used oil has drained reinstall the drain plug and return the hose to the hook 3 Fill with new oil up to the upper level on the dipstick 4 To check the oil level Remove the dipstick wipe it clean insert it and draw it out again Check ...

Page 64: ...er 7 Reinstall the carbon canister A Operating in dusty condition may require more frequent maintenance than above BChecking Air Cleaner Outer Element Check the air cleaner daily or before starting the engine Check for a buildup of dirt and debris around the air cleaner system Keep this area clean Also check for loose or damaged components Check the air cleaner outer element every 100 hours of ope...

Page 65: ...e 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 3 Check fuel filter if they are clogged by debris or contaminated with water replace it 4 If the dust or chaff has accumulated around the fuel filter remove them by hand or air blow A When the fuel line is disconnected for maintenance or repai...

Page 66: ...both sides 5 If the length of the brake spring is not correct adjust it See Adjustment of brake spring length in the next page 6 Release the parking brake completely 7 Hold the brake rod lightly 8 Check the brake spring play 9 If the brake spring play is not correct adjust it See Adjustment of brake spring play in the next page A Proper brake spring length with the brake applied to the lock positi...

Page 67: ...or the refillable type battery follow the instructions below A Do not use or charge the refillable type battery if the fluid level is below the LOWER lower limit level mark Otherwise the battery component parts may prematurely deteriorate which may shorten the battery s service life or cause an explosion Check the fluid level regularly and add distilled water as required so that the fluid level is...

Page 68: ...with the negative terminal first When connecting the cable to the battery start with the positive terminal first A Never check battery charge by placing a metal object across the posts Use a voltmeter or hydrometer 1 To slow charge the battery connect the battery positive terminal to the charger positive terminal and the negative to the negative then charge for at least 1 hour at 6 5 amperes 2 A b...

Page 69: ...arrow A Then tighten the bolt BAdjusting Throttle Cable 1 Move the throttle lever to the FAST position 2 Make sure the throttle arm contacts the stopper bolt 3 If not possible loosen the bolt and pull the throttle lever cable sheath in the direction of the arrow until throttle arm contacts the stopper bolt And then tighten the bolt 1 Choke lever 1 Choke bracket 2 Choke bracket cable 3 Choke bracke...

Page 70: ...by removing its 2 mounting bolts 4 Remove fuel pump by removing its 2 mounting bolts 5 Unplug engine wire harness from voltage regulator 6 Remove green grounding bolt from voltage regulator 7 Remove breather filter by removing its 2 mounting bolts 8 Remove blower cover by removing its 5 remaining mounting bolts 9 Clean all areas that were previously covered by the blower cover with compressed air ...

Page 71: ... Loosen the 2 bolts for the engine oil cooler 3 Pull out the engine oil cooler 4 Remove large debris from both sides of the engine oil cooler fin by hand and then blow off small debris with the compressed air Pressure of compressed air must be under 205 kPa 2 1 kgf cm 30 psi 5 Put back the engine oil cooler in the original position and tighten bolts BGreasing To avoid serious injury A Be sure to s...

Page 72: ...sion case 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 Mower belt tension pivot 1 Hydraulic hose LH RH 2 Hose clamp LH RH 3 Transaxle fluid expansion t...

Page 73: ...achine using abrasive grit Some grit could remain in the spark plug and enter the engine which may cause extensive wear and damage 6 Check the gap using a wire feeler gauge Adjust the gap to 0 76 mm 0 030 in by carefully bending the ground electrode 7 Reinstall the spark plug into the cylinder head BReplacing Engine Oil Filter To avoid serious injury A Engine oil is a toxic substance Dispose of us...

Page 74: ...on the dipstick BCleaning Engine Shroud Consult your local KUBOTA Dealer for this service BReplacing Fuel Filter See Checking Fuel Lines and Fuel Filter in EVERY 100 HOURS in PERIODIC SERVICE section EVERY 250 HOURS BReplacing Air Cleaner Outer Element See Checking Air Cleaner Outer Element in EVERY 100 HOURS in PERIODIC SERVICE section BChecking Air Cleaner Inner Element See Checking Air Cleaner ...

Page 75: ...e engine and disengage the parking brake 3 Set the engine throttle to low idle 4 Slowly move the motion control levers to the max forward position Hold for 30 seconds 5 Slowly move the motion control levers to the max reverse position Hold for 30 seconds 6 Place the motion control levers in neutral lock and apply the parking brake 7 Close the bypass valves of both transaxles 8 Set the engine throt...

Page 76: ...tor and armature face on both sides of the brake pole If air gap is 2 5 mm 0 100 in or greater or if clutch is having trouble engaging when hot proceed to Step 3 Otherwise skip to Step 9 3 Loosen both brake mounting bolts 1 full turn 4 Use pliers or hand to remove the shim Do not discard shim until proper clutch function has been confirmed 5 Using a pneumatic line blow out any debris from under th...

Page 77: ...emove the mower belt 2 Remove the transaxle belt 3 Remove the electric clutch and transaxle drive pulley 4 Apply a light coating of copper based Anti Seize lubricant to engine crank shaft 5 Reinstall transaxle drive pulley electric clutch and clutch mounting bolt 6 Torque clutch mounting bolt to 67 75 N m 50 55 lbf ft 7 Reinstall transaxle belt 8 Reinstall mower belt BCleaning Combustion Chamber I...

Page 78: ...er for this service BReplacing Fuel Lines Consult your local KUBOTA Dealer for this service BReplacing Carbon Canister Air Filter See Checking Carbon Canister Air Filter in EVERY 100 HOURS in PERIODIC SERVICE section SERVICE AS REQUIRED BReplacing Fuses Replacement of the fuse 1 Remove the blown fuse 2 Place a new fuse of the same capacity in position A If the new fuse happens to blow out within a...

Page 79: ...lustrated A Use the proper metric size box or socket wrench to tighten or loosen the blade mounting bolt 3 To sharpen the blades yourself clamp the blade securely in a vise Use a large mill file and file along the original bevel until sharp 4 To check the blade for balance place a small rod through the center hole If the blade is not balanced file the heavy side of the blade until balance is achie...

Page 80: ...e below periodically BMower Belt Replacement 1 Remove the mower deck from the machine according to the procedure DISMOUNTING THE MOWER DECK 2 Remove the left and right hand shield from the mower deck 3 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 LH blade 2 Center blade 3 RH bl...

Page 81: ... 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 If the rear axle is still turning follow the following steps to adjust the neutral position 6 Put weight on the seat cushion 7 Lengthen or shorten the rod by 1 2 turn and then tighten the lock nuts 8 Place the motion control lever to the reverse po...

Page 82: ...djusting HST neutral A Adjusting the motion control lever force will affect the maneuverability 1 Change the upper side of the damper to the desired hole location Tighten the upper side damper nut 2 Loosen the nut on the bottom side of damper 3 Move the motion control lever to the rearmost position and release the motion control lever 4 After the motion control lever and damper have stopped moving...

Page 83: ...y To avoid serious injury A Park the machine on a firm and level surface A Stop the engine remove the key and apply the parking brake C Aligning the control levers 1 Stop the engine and apply the parking brake Lever position High or Low 2 Remove the bolts and select the motion control lever position high or low 3 Tighten the bolts Lever alignment Right and Left 4 Loosen the bolts 5 Slide both leve...

Page 84: ...ware BLEVEL MOWER DECK Side to Side To avoid serious injury A Park the machine on a firm and level surface A Apply the parking brake A Disengage PTO OFF A Stop the engine and remove the key while checking or adjusting the level of the mower deck A Check the machine tire pressure Inflate tires to the correct pressure See TIRES AND WHEELS section C Checking level Side to Side A Mower deck anti scalp...

Page 85: ...emove the key while checking or adjusting the level of the mower deck A Check the machine tire pressure Inflate tires to the correct pressure See TIRES AND WHEELS section C Checking level Front to Rear A Mower deck anti scalp rollers should not contact the ground 1 Raise the mower deck to the transport position Also the top end 2 Turn the cutting height set dial to the 76 mm 3 in cutting height po...

Page 86: ...ine tuning bolts to set 76 mm 3 in blade height Both front side bolts must be adjusted 7 Tighten the jam nuts 8 Adjust the other side equally A The difference between both measurements should be less than 6 mm 1 4 in Front side must be lower than rear side 9 Check the front to rear level and if it is not level adjustment is necessary BMOWER LIFT PEDAL ADJUSTMENT 1 Stop the engine and apply the par...

Page 87: ...4 34 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 2...

Page 88: ... 2 39 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...

Page 89: ...echarge 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 the engine for 2 to...

Page 90: ...ubota dealer 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 depen...

Page 91: ... fuel 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...

Page 92: ...y sufficiently A Battery must be serviced properly before initial use When viewed from top the top of plates look whitish A Battery was used with an insufficient amount of electrolyte A Add distilled water and charge the battery A Regularly check the electrolyte level A Battery was used too much without recharging A Charge battery sufficiently A Charge the battery properly Recharging is impossible...

Page 93: ...A Full up and lubricate linkage Transaxle belt is slipping A Weak tension spring A Replace the tension spring A Worn transaxle belt A Replace the transaxle belt Symptom If Cause Remedy Blade does not rotate A PTO system is not normal PTO system malfunctioning A See your Kubota Dealer A PTO system is normal Broken mower belt A Replace Mower belt slipping A Weaken tension spring A Replace A Worn mow...

Page 94: ... speed on turns A Ridges in terrain A Change mowing pattern A Rough or uneven terrain A Adjust wheels pressure and anti scalp rollers A Anti scalp rollers not adjusted correctly A Adjust wheels pressure and anti scalp rollers A Bent blade s A Replace blade s Excessive vibration A Debris on mower deck or in pulleys A Clean mower deck and pulleys A Damaged mower belt A Replace mower belt A Damaged p...

Page 95: ...c Transaxle Bypass Lever 27 Immediately Stop the Engine if 15 Inflation Pressure 32 Inflation Pressure 42 Key Switch 14 LEVEL MOWER DECK Front to Rear 68 LEVEL MOWER DECK Side to Side 67 Lubricating Crank shaft 60 Lubricating Oil for New Machines 18 Machine Break in 18 MAXIMUM SPEED FORWARD 66 Motion Control Lever 23 MOTION CONTROL LEVER ALIGNMENT 66 MOTION CONTROL LEVER FORCE 65 Movable Parts 43 ...

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Kubota Z723, Operator'S Manual

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