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Kubota ZD1511LF Operator's Manual
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Kubota ZD1511LF Operator's Manual

Zero turn mower
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OPERATOR'S MANUAL
MODELS ZD1511LF
ZD1511RLF
ZD1511RL
1SHWZ00126A01
K3458-7125-3
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Summary of Contents for Kubota ZD1511LF

  • Page 1 OPERATOR'S MANUAL MODELS ZD1511LF ZD1511RLF ZD1511RL 1SHWZ00126A01 K3458-7125-3 READ AND SAVE THIS MANUAL...
  • Page 2 ABBREVIATION LIST Abbreviations Definitions American Petroleum Institute ASTM American Society for Testing and Materials, USA Feet Per Minute Hydrostatic Transmission Meters Per Second Power Take Off RH/LH Right-hand and left-hand sides are determined by facing in the direction of forward travel ROPS Roll-Over Protective Structures Revolutions Per Minute...
  • Page 3 UNIVERSAL SYMBOLS As a guide to the operation of your machine, various universal symbols have been utilized on the instruments and controls. The symbols are shown below with an indication of their meaning. Safety Alert Symbol Fast Diesel Fuel Slow Fuel-Level Engine Speed Control Parking Brake...
  • Page 4 FOREWORD You are now the proud owner of a KUBOTA ZERO TURN MOWER. This machine is a product of KUBOTA's quality engineering and manufacturing. It is made of excellent materials and under a rigid quality control system. It will give you long, satisfactory service.
  • Page 5 6. Overheat alarm ............................41 7. Fuel gauge, warning lamp and fuel valve ....................41 COLD WEATHER STARTING..........................42 WARMING UP THE ENGINE ..........................42 1. Warm-up and transmission oil in the low temperature range ..............42 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 6 3. Step ................................62 RAISING AND LOWERING THE OPERATOR'S SEAT..................62 TILTING UP THE MACHINE..........................63 OPENING THE LEVER GUIDE .......................... 64 LIFT-UP POINT..............................64 1. Front side:..............................65 2. Rear side: ..............................65 LUBRICANTS, FUEL AND COOLANT ....................... 66 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 7 EVERY 2000 HOURS OR EVERY 2 YEARS ..................... 91 1. Flushing cooling system and changing coolant ..................91 2. Antifreeze ..............................92 EVERY 3000 HOURS ............................93 1. Checking injection pump ........................... 93 2. Checking turbo charger ..........................93 EVERY 1 YEAR ..............................93 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 8 TIGHTENING TORQUE CHART ........................105 STORAGE..........................106 STORING THE MACHINE ..........................106 REMOVING THE MACHINE FROM STORAGE....................106 TROUBLESHOOTING ......................108 ENGINE TROUBLESHOOTING ........................108 POWER TRAIN TROUBLE SHOOTING......................109 BATTERY TROUBLESHOOTING........................110 MACHINE TROUBLESHOOTING ........................111 MOWER TROUBLESHOOTING........................112 INDEX............................114 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 9 • Do not wear loose, torn, or bulky clothing around • Use only implements recommended by KUBOTA. the machine. The clothing may catch on moving Use proper ballast on the front or rear of the parts or controls, leading to the risk of an accident.
  • Page 10 2. ROPS • The ROPS is an integral and effective safety device. • KUBOTA recommends the use of a roll-over protective structure (ROPS) and seat belt in almost all applications. This combination will reduce the (1) ROPS (2) Seat belt risk of serious injury or death, should the machine be upset.
  • Page 11 • Never carry children. They may fall off and be wheel weight or counterweights to improve stability. seriously injured or interfere with safe machine • Keep all movement on slopes slow and gradual. Do operation. not make sudden changes in speed or direction. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 12 • Use extra care when handling diesel fuels. They equipment. are flammable. • Use the PTO with KUBOTA approved attachments. 1. Use only an approved container. The speed of PTO: 2. Do not remove the fuel cap or refuel with the...
  • Page 13 • Do not remove the radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely. If the machine ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 14 For your safety, do not rely on hydraulically supported devices as they may leak down, suddenly drop or be accidently lowered. • Consult your local recycling center or KUBOTA Dealer to learn how to recycle or get rid of waste products.
  • Page 15 • To reduce fire hazards, clean the machine thoroughly before storage. Dry grass and leaves around the engine and muffler may ignite. • Let the engine cool before storing and do not store near flames. • Shut off fuel while storing or transporting. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 16 SAFE OPERATION SAFETY LABELS ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 17 SAFE OPERATION ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 18 SAFE OPERATION ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 19 SAFE OPERATION ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 20 SAFE OPERATION ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 21 • Clean safety labels with soap and water, and dry with a soft cloth. • Replace damaged or missing safety labels with new labels from your local KUBOTA Dealer. • If a component with safety label(s) attached is replaced with a new part, make sure new label(s) is (are) attached in the same location(s) as the replaced component.
  • Page 22 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 23 When in need of parts or major service, be sure to consult your local KUBOTA Dealer with the machine, engine and mower serial numbers.
  • Page 24 SERVICING OF MACHINE WARRANTY 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 instructions given in the operator's manual, even if it is within the warranty period.
  • Page 25 4PR turf low profile tire Traveling Forward mph (km/h) 0 to 10.6 (0 to 17.0) Traveling system speeds Reverse mph (km/h) 0 to 5.3 (0 to 8.5) Steering 2 - hand levers Transmission 2 - HST with gear (Continued) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 26 (in.) 0 (0) Revolution 1 speed (2570 rpm at 2500 engine rpm) Drive system Shaft drive, KUBOTA 10 tooth involute spline Clutch type Wet multi disks Specifications and design subject to change without notice. Manufacturer's estimate, SAE J1940 At 2500 engine rpm Oil amount when the oil level is at the upper level.
  • Page 27 IMPLEMENT LIMITATIONS IMPLEMENT LIMITATIONS The KUBOTA Machine has been thoroughly tested for proper performance with implements sold or approved by KUBOTA. Use with implements below may result in malfunctions or failures of the machine, damage to other property and injury to the operator or others.
  • Page 28 (27) Service code display…41 (13) Accelerator lever…36, (28) Tachometer…40 (14) PTO clutch indicator…36 (29) Engine warning indicator…31 (15) Neutral indicator (Motion control lever)…36 (30) DPF switch…30 NOTE : ™ • Items (17) to (22) correspond to the Easy Checker ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 29 (1) Anti-scalp roller (front, swivel type)…54 (2) Anti-scalp roller (rear, bolt shift type) rear RH roller is only for RCK72P…27, (3) Discharge chute RCK60R, RCK72R (1) Anti-scalp roller (front, swivel type)…54 (2) Anti-scalp roller (rear, bolt shift type)…27, ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 30 6. Place 50 mm (2 in.) wood blocks under each side of the mower deck. 7. Depress the hydraulic lift control pedal (DOWN) and pull down the lift links. 8. Attach the lift links to the mower deck with attaching hardware. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 31 RCK72P similar • Install the flange bolt from outside. ADJUSTING THE MOWER (See OPERATING THE MOWER on page 54 ADJUSTMENT on page 99.) DISMOUNTING THE MOWER DECK For dismounting the mower deck, reverse the above procedures. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 32 (2) Skid (left) (3) Gauge wheel boss (4) Plain washer (5) Sems bolt (6) Locking nut 3. Installation of bolt (adjuster) 1. Install the bolt (adjuster) with the nut. 2. Adjust length (L). 3. Tighten the nut. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 33 To extend operating time to reach this regeneration, • During regeneration, do not leave the machine. and to avoid DPF muffler trouble, make sure to observe the following handling matters. Fuel Be sure to use ultra low sulfur fuel (S15). ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 34 With the auto regeneration mode on, when a specific amount of PM has accumulated, and the regeneration conditions are satisfied, the DPF will be automatically regenerated whether the machine is in motion or parked. (See Tips on DPF regeneration on page 36.) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 35 If the regeneration indicator turns “ON” for a while and then starts flashing, keep on working and rev up the engine to the maximum rpm so that the regeneration indicator stops flashing and remains “ON”. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 36 Immediately move the machine to a safe Engine output: 50% stantly “ON”. place, park it there and turn the engine “OFF”. Contact your local KUBOTA Dealer. • At this level, do not continue to operate the machine; otherwise, damage may re- sult to the DPF and engine.
  • Page 37 3. When the parked regeneration indicator starts flashing: A specific amount of PM has accumulated in the DPF muffler. Move the machine to a safe place and activate the DPF muffler. (See Operating procedure for parked regeneration on page 35.) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 38 The engine warning indicator remains con- Immediately move the machine to a safe stantly “ON”. place, park it there and turn the engine “OFF”. Contact your local KUBOTA Dealer. • At this level, do not continue to operate the machine; otherwise, damage may re- sult to the DPF and engine.
  • Page 39 • If the parked regeneration cycle is interrupted, the engine rpm is fixed at the idling level for about 30 seconds. For this period, keep the hand accelerator lever at the idle position. Do not move it. It will function again in 30 seconds. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 40 (1) Parking brake pedal (A) “DEPRESS” (2) Parking brake lock pedal STARTING THE ENGINE 1. Sit on the operator's seat. Put on the seat belt. 2. Apply the parking brake. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 41 (3) Neutral indicator (C) “FORWARD” NOTE : (D) “REARWARD” • Glow plug indicator (1) comes on while the 5. Set the accelerator lever 1/2 way forward. engine is being preheated. (1) Accelerator lever (A) “FAST” (B) “SLOW” ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 42 “NEUTRAL LOCK” position and the operator is • Then contact your local KUBOTA Dealer sitting in the seat. immediately. WARNING To avoid serious injury or death: • Do not operate the machine until the engine stop system is repaired. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 43 IMPORTANT : is on. • When the fuel warning lamp lights up, refuel the tank as soon as possible. If the machine runs out of fuel and stalls, the engine and its components may be damaged. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 44 If the trouble is not corrected by restarting the To avoid serious injury or death: machine, consult your local KUBOTA Dealer. • Do not remove radiator cap until coolant temperature is well below its boiling point. Then...
  • Page 45 Check the machine by reading the troubleshooting section of this manual. (See TROUBLESHOOTING on page 108.) 7. Fuel gauge, warning lamp and fuel valve (1) Fuel gauge (E) “EMPTY” (2) Fuel level warning lamp (F) “FULL” ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 46 (23 ℉ ) and the engine is very cold. (If the engine adjusted properly. Unless corrected, the unit fails to start after 10 seconds, turn off the key for 30 will be damaged. Contact your local KUBOTA seconds.), then repeat steps 7 and 8. Details Dealer for adjustment.
  • Page 47 Disconnect in reverse order after use. (1) Dead battery (4) Helper battery (2) Jumper cables (3) Engine block or frame IMPORTANT : • This machine has a 12 volt negative (-) ground starting system. • Use only same voltage for jump starting. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 48 • Do not direct the opening of the chute at bystanders or animals. Ejected objects may DANGER cause injury. Plan your mowing carefully before To avoid serious injury or death: starting operation. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 49 (1) Lock pin (2) Snap pin (3) Knob bolt (1) Lock pin 3. Fold the ROPS. (2) Snap pin CAUTION To avoid personal injury: • Hold the ROPS tightly with both hands and fold the ROPS slowly and carefully. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 50 Hydraulic lift control pedal on page 48 4. Accelerate the engine. • Accelerator lever on page 48 5. Unlock the parking brake. • Parking brake pedal on page 49 (1) Lock pin (2) Snap pin (3) Knob bolt ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 51 (3) Lumbar support adjust lever backrest tilt adjust knob or the lumbar support (4) Arm rest adjust lever. (5) Arm rest angle adjuster (6) Bypass pipe 2. Seat belt WARNING To avoid serious injury or death: ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 52 • If noises are heard when implement is lifting type. after the hydraulic lift control pedal has been activated, the hydraulic mechanism is not adjusted properly. Contact your local KUBOTA Dealer for adjustment. 4. Accelerator lever • Move the accelerator lever backward to decrease the engine speed.
  • Page 53 PTO Neutral position engaged until becoming proficient in the Grasp the motion control levers and move them inward operation of the machine. from the “NEUTRAL LOCK” position so that the ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 54 For rearward travel in a straight line, pull both motion control levers past center rearward equally and slowly. Sharp (zero) left turn: Push the right motion control lever forward and pull the left motion control lever rearward at the same time. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 55 To avoid serious injury or death: applying the parking brake, the machine could • Do not stop or change directions on slopes. move and run away. These operations could cause loss of the machine traction or control. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 56 If necessary to park on an incline, be sure to chock the 4. Install the hairpins between the axle mount frame wheels on the downhill side to prevent accidental rolling of the machine. and the front axle. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 57 • Secure the portions of the machine, which are shown in the figure below, by using heavy duty straps. Front (1) Heavy-duty strap 2. When you drive the machine, for a long distance transit, set the mower deck to the 5 inch position. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 58 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 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 59 6 mm (0.25 in.) to the ground. Bolt setting (1) Anti-scalp roller (front, swivel type) (2) Anti-scalp roller (rear, bolt shift type) RCK72P (1) Anti-scalp roller (front, swivel type) (2) Anti-scalp roller (rear, bolt shift type) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 60 4.75" (121) (76) 5.00" (127) (83) For cutting heights above 3.0". The anti-scalp rollers will still be effective against scalping. Use it if necessary. For cutting heights above 3.5". The anti-scalp rollers will still be effective against scalping. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 61 • These safety features are built-in. streaks of grass clippings from forming. IMPORTANT : • Mowing without the skids on a surface that is not properly flat may result in damage to the ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 62 • Never remove the rubber plates off the mower deck. Grass clippings will scatter and pile up to the hood and surrounding area during mowing. Continuous mowing under these conditions may result in overheating. This machine is equipped with an overheat warning buzzer as standard. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 63 (2) Rubber plate 2 (center) (B) Hole for installing upper (3) Upper plate 1 (both sides) plate 1 (4) Upper plate 2 (center) (C) Hole for installing upper (5) Short square neck bolt plate 2 (6) Flange nut ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 64 1. Park the machine on a firm and level surface. 2. Stop the engine and apply parking brake. (1) Ground (A) “INSUFFICIENT” (B) “NORMAL” 3. Lift the front of machine with a safe lifting device. (C) “EXCESSIVE” ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 65 • Tighten the nut gradually until the wheel bearing play is eliminated and the wheel turns freely by hand. 20 to 25 N⋅m Tightening torque 14.8 to 18.4 lbf⋅ft 2 to 2.5 kgf⋅m 4. Lower the machine. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 66 To avoid serious injury or death: • Fully raise the operator's seat. (To the locked position) Do not keep the seat halfway. 1. Seat must be all the way back before raising. 2. Pull the latch lever on the seat panel frontward. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 67 • Park the machine on a firm and level surface. • Set the mower deck height to 5 inch. • Stop the engine, remove the key and engage the parking brake. • Be sure to chock the wheels. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 68 To avoid serious injury or death: • Park the machine on a firm and level surface. • Stop the engine, remove the key and apply the parking brake. 1. Remove the screw of the lever guide. 2. Pull up the lever guide. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 69 (2) Front axle (3) Chock 2. Rear side: 1. Remove the DPF cover with KUBOTA mark. 2. Lift the rear frame with a nylon sling. Never lift up the engine oil pan or battery support. 3. When reassembling, make sure that flammable materials are not in contact with the DPF muffler and the surroundings of the exhaust pipe.
  • Page 70 Oil amount when the oil level is at the upper level of the oil level gauge. The product name of KUBOTA genuine UDT fluid may be different from that in the operator's manual depending on countries or territories. Consult your local KUBOTA Dealer for further detail.
  • Page 71 <0.0015% (15 ppm) Transmission oil: • KUBOTA Super UDT-2: For an enhanced ownership experience, we highly recommend Super UDT-2 to be used instead of standard hydraulic/transmission oil. Super UDT-2 is a proprietary KUBOTA formulation that deliveries superior performance and protection in all operating conditions.
  • Page 72 8. The Kubota warranty, as specified in the owner's warranty information guide, only covers defects in product materials and workmanship. Accordingly, any problems that may arise due to the use of poor quality fuels that fail to meet the above requirements, whether biodiesel or mineral oil based, are not covered by the Kubota warranty. Routine handling: 1.
  • Page 73 Engine start system/OPC Oil and water leak system. If either of these do not operate properly, contact Fuel level your local KUBOTA Dealer immediately. Engine oil level Check for abnormal noise Transmission oil level and vibration. Coolant level in the radiator...
  • Page 74 1. Park the machine on a flat surface, lower the implement to the ground and shut off the engine and remove the key. Allow the machine to idle for 1-3 minutes, and then check fluid. 2. Raise and lock the operator's seat. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 75 If any such are found, repair immediately. radiator decrease cooling performance. (See Replacing radiator hose on page 95.) 1. Remove the radiator screen and remove all foreign material. 2. Remove the dust from between the fins and the tube. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 76 • Do not use tires larger than specified. (1) Hood screen 7.1 Inflation pressure Even though the inflation pressure is factory-set to the prescribed level, it naturally drops slowly in the course of time. Therefore, check it everyday and inflate as necessary. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 77 RCK60R, RCK72R 1. Remove the wing nuts at the rear part. The rubber sheet will come down. 2. Clean cut grass in there. 3. After cleaning, install back the rubber sheet. (1) Mower universal joint ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 78 PERIODIC SERVICE DAILY CHECK RCK72P RCK60R, RCK72R (1) Spindle shaft (2) Belt tension pulley (3) Belt tension pivot (4) Front anti-scalp roller pivot boss (5) Front anti-scalp roller ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 79 2 years every 2000Hr 20 Coolant Change or 2 years 21 Injection pump Check every 3000Hr 22 Turbo charger Check every 3000Hr 23 Exhaust manifold Check every 1 year Check every 1 year 24 Fuel line (Continued) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 80 Consult your local KUBOTA Dealer for this service. If you feel you are unable to make this service correctly and safely, contact your local KUBOTA Dealer. When the battery is used for less than 100 hours per year, check the battery condition by reading the indicator annually.
  • Page 81 PERIODIC SERVICE CHART LABEL MAINTENANCE PERIODIC SERVICE CHART LABEL ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 82 NOTE : • Sit on the operator's seat for all tests except for • If the engine cranks in tests 1 through 4, test 1. consult your local KUBOTA Dealer to have the unit checked before operation. IMPORTANT : • Test...
  • Page 83 NOTE : RCK72R • If the engine keeps running in tests 1 through 2, consult your local KUBOTA Dealer to have the unit checked before operation. 3. Checking gear box oil level WARNING To avoid serious injury or death: •...
  • Page 84 (1) Machine universal joint (L) L-plate (2) Engine (1) Tilt lever (3) Radiator When you put grease to the machine universal joint, remove the L-plate. When reassembling, make sure to install it in the direction shown in the figure. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 85 3. Replace air cleaner primary element: causing a fire. Once yearly or every 1000 hours whichever comes first. 1. Open the step and hood. NOTE : • Check to see if the evacuator valve is blocked with dust. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 86 (1) Tension bolt (A) 10 mm (0.4 in.) (4) Seat (2) Alternator (3) Adjusting bolt 4. Adjusting parking brake If you feel you are unable to make the following service correctly and safely, contact your local KUBOTA Dealer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 87 0.5 to 1.0 mm play (0.02 to 0.04 in.) 2. Apply the parking brake. 3. Place the motion control levers in “NEUTRAL LOCK” position and shut off the engine. 4. Check that the machine does not move. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 88 To avoid the possibility of battery explosion: refillable type battery, follow these instructions: Regarding non-accessible maintenance-free type • Do not use or charge the refillable type battery batteries: if the fluid level is below the [LOWER] (lower ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 89 When connecting the cable to the battery, start with the positive terminal first. • Never check the battery charge by placing a metal object across the posts. Use a voltmeter or hydrometer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 90 4. Fill with the new oil up to the check plug port. (See LUBRICANTS, FUEL AND COOLANT on NOTE : page 66.) RCK60R Similar 5. After filling reinstall the check plug and oil inlet plug with gauge securely. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 91 1. Changing engine oil replacement element of the recommended type must be used. Use only a genuine KUBOTA filter or its equivalent. WARNING To avoid serious injury or death: • Be sure to stop the engine and remove the key before changing the oil.
  • Page 92 KUBOTA genuine filter. 0.5 mm Allowable limit (0.02 in.) 4. Adjusting front axle pivot WARNING To avoid serious injury or death: • Be sure to stop the engine and remove the key before adjusting front axle pivot. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 93 (A) Oil level is acceptable within (2) Oil plug and breather cup this range. 2. Replacing hydraulic oil filter WARNING To avoid serious injury or death: • Be sure to stop the engine and remove the key before changing the oil filter. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 94 • Allow the transmission case to cool down 3. Replacing fuel filter sufficiently, as oil can be hot and may cause Consult your local KUBOTA Dealer for this service. burns. 1. The oil filter must be changed every 400 service EVERY 800 HOURS hours.
  • Page 95 9. Stop the engine and let cool. EVERY 1500 HOURS 1. Checking fuel injection nozzle (injection pressure) Consult your local KUBOTA Dealer for this service. EVERY 2000 HOURS OR EVERY 2 YEARS Be sure to do the following service once every 2000 hours or every 2 years whichever comes faster.
  • Page 96 • Start engine with the hood closed. soft water in KUBOTA engines. • Use clean, distilled water and antifreeze to Consult your local KUBOTA dealer concerning coolant fill the radiator and recovery tank. for extreme conditions. • When the antifreeze is mixed with water, the 1.
  • Page 97 If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts. 7. Kubota's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2000 hours or every 2 years whichever comes faster.
  • Page 98 If you feel you are unable to make the following service correctly and safely, contact your local KUBOTA Dealer. 1. Check to see that all lines and hose clamps are tight and not damaged.
  • Page 99 Protected Capacity Capacity ed cir- circuit If you feel you are unable to make the following service cuit correctly and safely, contact your local KUBOTA Dealer. Control (See Checking radiator hose and clamp on page 93.) system (12) (20 A)
  • Page 100 Checking The blade cutting edges should be kept sharp at all times. Sharpen the cutting edges if they look like blade (B). Replace the blades if they appear similar to blade (1) Block (A) “LOOSEN” (C). ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 101 (A) 30 mm (2) Blade (3) 2-Cup washers (4) Lock washer (5) Bolt (6) Spindle guard IMPORTANT : • Tighten the three blade bolts to 102.9 to 117.6 N⋅m (10.5 to 12 kgf⋅m, 75.9 to 87 lbf⋅ft) of torque. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 102 6. To install a new belt, reverse the previous procedure. NOTE : • Tighten bracket bolts securely 77.5 to 90.2 N⋅m (8.0 to 9.2 kgf⋅m, 57.1 to 66.5 lbf⋅ft). (1) Tension pulley (2) Bracket (RH) (3) Belt ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 103 2. Maximum speed (forward) 1. Lift up and secure with jack stands or by blocking the rear of the machine frame. Consult your local KUBOTA Dealer for this service. 2. Remove both rear wheels. 3. Set the engine speed to maximum.
  • Page 104 (A) “GAP” Check the 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. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 105 6. Check that the left side blade has the same height. The difference between both measurements is less than 3 mm (0.12 in.). 7. If the side-to-side adjustment is not within the given tolerance, adjustment is necessary. (1) Bolt (H) 19 mm (0.75 in.) ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 106 (1) Cutting height fine tuning bolt (2) Lock nut 3. Leveling the mower deck (front-to- rear) WARNING To avoid serious injury or death: • Park the machine on a firm and level surface. • Engage the parking brake. • Disengage the PTO. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 107 6 mm (0.24 in.). The front side must be lower than the rear side. 9. Check the front-to-rear level. If it is not level, adjustment is necessary. (A) Front (B) Rear (1) Cutting height fine tuning bolt (2) Lock nut ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 108 (lbf⋅ft) 110-132 160-192 (lbf⋅ft) 91.2-108 123-144 9/16 (N⋅m) 149.2-179.0 217.0-260.4 (N⋅m) 124-147 167-196 (kgf⋅m) 15.22-18.27 22.14-26.57 (kgf⋅m) 12.6-15.0 17.0-20.0 (lbf⋅ft) 150-180 220-264 (lbf⋅ft) 145-166 192-224 (N⋅m) 203.4-244.1 298.3-358.0 (N⋅m) 196-225 260-303 (kgf⋅m) 20.75-24.91 30.44-36.53 (kgf⋅m) 20.0-23.0 26.5-31.0 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 109 (135.3 ± 11.7) (13.8 ± 1.2) NOTE : • Figure [7] on the top of the bolt indicates that the bolt is made of special material. • Before tightening, check the figure on top of the bolt. (1) Scale ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 110 6. Check all coolant, hydraulic and fuel hoses for cracks, hardening, bubbles and leaks. 7. Check all control levers and the brake for proper function, repair or lubricate as necessary. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 111 11. With the engine fully warmed up, release the parking brake and test the brakes for proper adjustment as you move forward. Adjust the brakes as necessary. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 112 Stop the engine and get it restarted. If the engine fails to restart or the indicator stays on, immediately contact your local KUBOTA dealer. Engine warning indicator is turned on repeatedly. Immediately contact your local KUBOTA dealer. If you have any questions, contact your local KUBOTA dealer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 113 LCD. The error code indicates the location of the trouble. If an error code appears, immediately contact your local KUBOTA Dealer for repairs. (1) Master system warning indicator (2) Error code...
  • Page 114 • There is a crack or • Replace the battery. pin holes in the elec- trolytic cells. • Charging system • Contact your local trouble. KUBOTA Dealer. If you have any questions, contact your local KUBOTA dealer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 115 Check wire harness. • LCD monitor malfunction. • Replace LCD monitor. All electrical equipment do not • Slow blow fuse blown. • Replace the slow blow fuse. operate. If you have any questions, contact your local KUBOTA dealer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 116 Replace the mower belt. • Damaged pulleys. • Replace pulleys. • Pulleys out of alignment. • Consult your local KUBOTA Dealer. • Blades out of balance. • Have blades balanced. Mower loads down machine. • Engine rpm too low. •...
  • Page 117 TROUBLESHOOTING If you have any questions, contact your local KUBOTA dealer. ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 118 69 fan drive belt tension checking the tire pressure........ 60,72 adjusting..............82 checking the tire pressure (warning information).. 72 front axle checking transmission oil........70 fixing..............52 cleaning cut grass in rubber sheet......73 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 119 (warning information)......99 replacing..............94 adjusting HST neutral..........99 hydraulic lift control pedal..........48 adjusting maximum speed (forward)..... 99 hydraulic oil filter adjusting the operating strength......99 replacing..............89 aligning..............100 alignment.............100 checking the alignment........100 implement limitations...........23 operating position..........49 stop position............49 ZD1511LF, ZD1511RLF, ZD1511RL...
  • Page 120 93 turbo charger replacing..............95 checking..............93 radiator screen checking..............71 cleaning..............71 re-start on slopes............51 warning lamp...............41 rear axle gear case oil (RH and LH) warranty..............20 changing..............89 wheels................. 60 rear side..............65 ZD1511LF, ZD1511RLF, ZD1511RL...

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