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Kubota Z412KW Operator's Manual

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AZ . E . 5 - 5 . - . AK
PRINTED IN U.S.A.
IMPRESO EN E.E.U.U.
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English, Spanish (U.S.A.)
W
Code No.
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K3071-7123-2
Código n°
©
KUBOTA Corporation 2019
OPERATOR'S MANUAL
MANUAL DEL OPERADOR
1SVWF00001A01
READ AND SAVE THIS MANUAL
LEA Y CONSERVE ESTE MANUAL
MODELS
Z412KW
MODELOS
Z422KW
Z422KWT
Z411KW
Z421KW
Z421KWT

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Summary of Contents for Kubota Z412KW

  • Page 1 English, Spanish (U.S.A.) Code No. K3071-7123-2 1SVWF00001A01 AZ . E . 5 - 5 . - . AK Código n° READ AND SAVE THIS MANUAL LEA Y CONSERVE ESTE MANUAL PRINTED IN U.S.A. © IMPRESO EN E.E.U.U. KUBOTA Corporation 2019...
  • Page 2 Miles de personas confían en el saber hacer de KUBOTA y su tecnología, experiencia y servicio al cliente. Usted también puede...
  • Page 3 OPERATOR'S MANUAL MODELS Z412KW Z422KW Z422KWT Z411KW Z421KW Z421KWT 1SVWF00001A01 READ AND SAVE THIS MANUAL...
  • Page 4 ABBREVIATION LIST Abbreviations Definitions American Petroleum Institute 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 Revolutions Per Second Society of Automotive Engineers UNIVERSAL SYMBOLS...
  • Page 5 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 6: Table Of Contents

    3. Adjusting the foldable ROPS ........................36 STARTING THE MACHINE ..........................36 1. Operator's seat ............................37 1.1 Suspension type on Z412KW, Z422KW, Z422KWT ................37 1.2 Standard type on Z411KW, Z421KW, Z421KWT ................37 2. Seat belt ..............................37 3.
  • Page 7 4. Checking the fuel filter and fuel lines ......................62 5. Checking the battery condition ........................63 5.1 Charging the battery........................... 63 5.2 Storing the battery ..........................64 6. Adjusting the throttle cable ........................64 7. Adjusting the choke cable.......................... 64 8. Greasing mower link bushings ........................65 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 8 GENERAL TORQUE SPECIFICATION ......................78 TIGHTENING TORQUE CHART ........................79 STORAGE..........................80 STORING THE MACHINE ..........................80 REMOVING THE MACHINE FROM STORAGE....................80 TROUBLESHOOTING .......................81 ENGINE TROUBLESHOOTING ......................... 81 BATTERY TROUBLESHOOTING........................83 MACHINE TROUBLESHOOTING ........................83 MOWER TROUBLESHOOTING......................... 84 INDEX............................86 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 9 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 10: Safe Operation

    • Pay special attention to the safety labels on the which may result in personal injury. machine itself. • Use only implements approved by KUBOTA. Use • Do not allow any bystanders around or near the proper ballast on the front or rear of the machine to machine during operation.
  • Page 11 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 risk of serious injury or death, should the machine be upset.
  • Page 12 – Never allow children or others in, or on, towed • Never raise the deck with the blades running. equipment. Disengage the PTO and stop the blades from – Use additional caution when turning rotating if not mowing. operating under adverse surface conditions. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 13 • Use extra care when handling gasoline fuels. They 7. Stopping the machine are flammable. 1. Use only an approved container. • Park the machine on level ground. 2. Do not remove the fuel cap or refuel with the engine running. Allow the engine to cool before Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 14 Check • Consult your local recycling center or KUBOTA the fluid level regularly and add distilled water as Dealer to learn how to recycle or get rid of waste required so that the fluid level is between the 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. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 16 SAFE OPERATION SAFETY LABELS Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 17 SAFE OPERATION Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 18 SAFE OPERATION Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 19 SAFE OPERATION Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 20 SAFE OPERATION Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • 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: Servicing Of Machine

    However, when in need of parts or major service, be sure to consult your local KUBOTA Dealer. When in need of parts, be prepared to give your dealer the product identification number (PIN), and the ROPS, engine and mower serial numbers.

  • Page 23: Warranty

    (1) Mower identification plate (2) Mower serial number 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 24: Specifications

    These Kawasaki engines have been tested in accordance with SAE J1995, verified by TÜV Rheinland Group, and certified by SAE Interna- tional. The gross power ratings of these engines were determined by using measurements according to SAE J1995 which were witnessed by Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 25 Oil amount when the oil level is at the upper level. Model Z412KW Z422KW Z422KWT Model...
  • Page 26  SPECIFICATIONS Model RCK48-400Z RCK54-400Z RCK60-400Z Suitable machine Z411KW, Z412KW Z421KW, Z422KW Z421KWT, Z422KWT Mounting method Parallel linkage Adjustment of cutting height Dial gauge Mower deck PRO commercial deck (fabricated deck) Cutting width mm (in.) 1219 (48) 1372 (54) 1524 (60) Cutting height mm (in.)

  • Page 27: Implement Limitations

     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   Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 29: Instrument Panel And Controls

    (2) Parking brake lock pedal…29, 41 (9) Cutting height control dial…43 (3) Motion control lever…29, 38 (10) Key switch…31 (4) Seat belt…37 (11) Choke knob…30 (5) Cup holder…- (12) Hour meter…32 (6) Operator's seat…37 (13) PTO switch…45 (7) Foldable ROPS…35 (14) Throttle lever…38 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 30: Mower

    MOWER  INSTRUMENT PANEL AND CONTROLS MOWER RCK48P, RCK54P (1) Anti-scalp roller (front, bolt shift type)…43 (2) Discharge deflector RCK60P (1) Anti-scalp roller (front, bolt shift type)…43 (2) Discharge deflector Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 31: Mower Mounting

    6. Put a Φ9.5 mm (0.37 in.) × 100 mm (4 in.) shaft in the hole of the front right side lift link. IMPORTANT : • Use a shaft at least 100 mm (4 in.) or longer. • The shaft passes through a hole in the frame. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 32: Adjusting The Mower

    (1) Tension arm (A) Square wrench (2) Mower belt (B) “CLOCKWISE” (3) Mower pulley 11. Attach the mower belt to the mower pulleys. 12. After mounting the mower, check the mower level. If necessary, adjust the mower level and anti-scalp rollers. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 33 Φ9.5 mm (0.37 in.) shaft from the hole in the rear right side lift link. 8. Slowly push the mower lift pedal to the full up position. 9. Slide the mower deck from under the machine to the right side of it. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 34: Operating The Engine

    To apply the parking brake: a. Depress the parking brake pedal firmly with the left side of your right foot. b. While keeping parking brake pedal depressed, use the right side of your right foot to depress the parking brake lock pedal. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 35: Choke Knob

    The engine and equipment may be operated during the 5. Set the throttle lever as follows. warmup period, but it may be necessary to leave the Place the throttle lever midway between the choke partially on until the engine warms up. “SLOW” and the “FAST” positions. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 36: Throttle Lever

    Do not jump start using another battery. CHECK DURING OPERATING Consult your local KUBOTA Dealer. • Do not turn the key switch to the “START” IMPORTANT : position while the engine is running.

  • Page 37: Fuel Gauge

    Unless corrected, the unit If the ambient temperature is below 0 ℃ (32 ℉) and the will be damaged. Contact your local KUBOTA engine is very cold, start it in the following manner: Dealer for adjustment.

  • Page 38: Jump Starting

    8. Start the helper vehicle and let its engine run for a few moments. Start the disabled machine. 9. Disconnect the jumper cables in the exact reverse order of attachment (steps 7, 6 and 5). Connect cables in numerical order. Disconnect in reverse order after use. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 39: Operating The Machine

    To avoid serious injury or death: starting operation. • Do not operate the mower without the discharge • Be sure to disengage the PTO and sit on the deflector in the down position. operator's seat before starting the engine. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 40: Operating The Foldable Rops

    If an interference occurs, contact your local WARNING KUBOTA Dealer. To avoid serious injury or death: • Make sure that both lock pins are properly 1. Folding the ROPS installed and secured with the snap pins.

  • Page 41: Raising The Rops To The Upright Position

    6. Operate the machine. • Motion control lever on page 38 • Stop position of the motion control lever on (1) Lock pin page 39 (2) Snap pin • Operating position of the motion control lever on (3) Knob bolt page 39 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 42: Operator's Seat

    • Make sure that the seat is completely secured after each adjustment. • Do not allow anyone other than the driver to ride on the machine. 1.1 Suspension type on Z412KW, Z422KW, Z422KWT (1) Armrest (2) Seat adjusting lever Fore-aft adjustment Pull the seat adjusting lever and slide the seat.

  • Page 43: Mower Lift Pedal

    2. While keeping the parking brake pedal depressed, of control or damage to the machine or use the right side of your right foot to depress the property. parking brake lock pedal. • Do not make sharp turns at high speed. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 44: Stop Position Of The Motion Control Lever

    Grasp the motion control levers and move them inward from the “NEUTRAL LOCK” position so that the machine is in “NEUTRAL” (the engine cannot be restarted). Forward and rearward motion: 1. Move the throttle lever to the “FAST” position. 2. Release the parking brake. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 45: Stopping The Machine

    • The motion control levers are adjustable. (If adjustment is required, see ADJUSTMENT on page 73.) We recommend you to contact your local KUBOTA Dealer. STOPPING THE MACHINE Sharp (zero) left turn: WARNING Push the right motion control lever forward and pull the To avoid serious injury or death: left motion control lever rearward at the same time.

  • Page 46: Parking The Machine

    If necessary to park on an incline, be sure to chock the wheels on the downhill side to prevent accidental rolling of the machine. (1) 12 volt outlet (2) Smartphone holder (3) Cup holder (4) Utility box (5) 12 volt plug Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 47: Transporting The Machine

    3. After moving, place both the right side and left side HST bypass rod back into the “OPERATING 1. Face the machine from the rear, lift and pull the left POSITION”. side HST bypass rod from the “OPERATING POSITION” and push it down to the “BYPASS POSITION”. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 48: Operating The Mower

    75 mm (3 in.) can be cut to a minimum of 50 mm (2 in.). 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 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 49 • Never allow the rollers to contact the ground continuously as premature roller wear may develop if set incorrectly. • Anti-scalp rollers must maintain a minimum clearance of 6 mm (0.25 in.) to the ground. (1) Anti-scalp roller (front, bolt shift type) Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 50: Operating The Mower

    (operator presence control). • Before starting the engine, push the PTO switch “DISENGAGED” (OFF) position. If it is at the “ENGAGED” (ON) position, the engine will not start. • These interlock features are built-in. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 51: Tires And Wheels

    1.7 kgf/cm 25 psi 83 kPa Rear 24 × 9.5 - 14, 4PR turf 0.84 kgf/cm 12 psi Z412KW, Z422KW 170 kPa (1) 108.5 to 130.2 N ⋅ m Front 13 × 6.5 - 6, 4PR smooth 1.7 kgf/cm 80 to 96 lbf ⋅...

  • Page 52: Installing The Front Caster Wheels

    • Do not place your body under the machine or the mower deck while lifting the machine. • Park the machine on a firm and level surface. • Apply the parking brake. • Stop the engine and remove the key before removing the front caster wheels. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 53: Maintenance

    20 Crankshaft ○ every 500 hr every 500 hr 21 Electric clutch Adjust ○ or 1 year Check every 1 year 22 Fuel line every 4 Replace years Check every 1 year 23 Hydraulic hose every 4 Replace years (Continued) Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 54 See the Emissions Warranty Statement. – To ensure the best quality and reliability, use new KUBOTA genuine parts or their equivalents for repairs and replacement, whenever you have maintenance done. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 55: Periodic Service Chart Label

    PERIODIC SERVICE CHART LABEL PERIODIC SERVICE CHART LABEL This label is for your quick reference. The label shows the recommended services from daily to every 4 years, including fluid capacities, tire pressure and so on. For detail, refer to operator's manual. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 56: Lubricants And Fuel

    LUBRICANTS AND FUEL  MAINTENANCE LUBRICANTS AND FUEL Capacities Locations Lubricants Z411KW, Z421KW, Z421KWT, Z412KW, Z422KW, Z422KWT • Automobile unleaded or regular gasoline Fuel tank 25.7 L (6.8 U.S. gals.) • Unleaded gasoline 87 octane or higher • Engine oil: API service Classification SF, SG, SH, SJ or SL Above 20 ℃...

  • Page 57: Periodic Service

    To prevent trouble from occurring, it is important to know the condition of the machine. Check it before starting. WARNING To avoid serious injury or death: • Be sure to check and service the machine on a level surface with the engine shut off, the key Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 58: Checking The Engine Oil Level

    To avoid serious injury or death: system. If either of these do • Park the machine on a firm and level surface. not operate properly, contact your local KUBOTA Dealer • Apply the parking brake. immediately. • Handle the fuel carefully. If the engine is running, do not fill the fuel tank.

  • Page 59: Checking And Cleaning The Air Intake Screen

    • Do not use a fuel cap other than one approved overheating. by KUBOTA. • Do not permit dirt, trash or water to get into the Daily or after every 5 hours of operation, make sure the fuel system.

  • Page 60: Checking The Transaxle Fluid Level

    25 psi (See LUBRICANTS AND FUEL on page 51.) 83 kPa Rear 24 × 9.5 - 14, 4PR turf 0.84 kgf/cm 12 psi Z412KW, Z422KW 170 kPa Front 13 × 6.5 - 6, 4PR smooth 1.7 kgf/cm 25 psi 83 kPa Rear 24 ×...

  • Page 61: Checking The Dial Cam Rotation Strength

    2. Remove the air cleaner cover. 2. Rotate the cutting height control dial and check for smoothness. 3. If the rotation strength is too high, clean the dial cam area and apply grease under the dial cam between the dial cam and the frame. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 62: Cleaning The Foam Element

    1. Turn the fasteners counterclockwise. 2. Remove the air cleaner cover. (1) Foam element (2) Paper element 6. Clean the foam element in a bath of detergent and water, and let the element air-dry thoroughly. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 63: Every 50 Hours

    4. Turn the key switch to the “START” position. 5. The engine must not crank. NOTE : • If the engine cranks in tests 1 through 4, consult your local KUBOTA Dealer to have the unit checked before operation. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 64: Checking The Opc System

    “NEUTRAL LOCK” position to the • If the engine keeps running in tests 1 through 2, “NEUTRAL” position and then release the levers. consult your local KUBOTA Dealer to have the 5. The engine must shut off. unit checked before operation.

  • Page 65: Greasing

    Combustible debris, such as leaves, grass, brush, oil can be hot and may cause burns. and so on can catch fire. To avoid serious injury or death: • Allow the muffler, engine cylinder and fins to cool before touching. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 66: Cleaning The Air Cleaner Paper Element

    2 marks. NOTE : • Do not overfill. 2. Cleaning the air cleaner paper (A) 0.7 to 0.8 mm, 0.028 to 0.031 in. element (See Cleaning the foam element on page 57.) Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 67: Checking The Fuel Filter And Fuel Lines

    (1) Vent hose (1) Fuel valve (A) “CLOSE” (OFF) (2) Pipe clamp (2) Fuel tank (B) “OPEN” (3) 2-way valve (assembled in the fuel tank) (3) Fuel line (4) Pipe clamp Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 68: Checking The Battery Condition

    • Keep open sparks and flames away from the explosive. Keep open sparks and flames away battery at all times. Hydrogen gas mixed with from the battery at all times, especially when oxygen becomes very explosive. charging the battery. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 69: Storing The Battery

    WARNING To avoid serious injury or death: WARNING • Park the machine on a firm and level surface. To avoid serious injury or death: • Apply the parking brake. • Park the machine on a firm and level surface. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 70: Greasing Mower Link Bushings

    8. Greasing mower link bushings To avoid serious injury or death: • Engine oil is a toxic substance. Dispose of used WARNING oil properly. Contact your local authorities for approved disposal methods possible To avoid serious injury or death: recycling. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 71: Every 300 Hours

    4. Apply a thin film of clean oil to the rubber gasket on the new oil filter. Consult your local KUBOTA Dealer for this service. 5. Install the new oil filter to the filter adapter. Hand tighten the filter clockwise until the rubber gasket 2.

  • Page 72: Changing The Transaxle Fluid

    12. Fill with 20W-50 motor oil until oil appears just at the bottom of the breather port. Install the breather port plug (5) into the transaxle. Tighten the plug (5) to 20.34 N⋅m (15.0 lbf⋅ft). Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 73: Lubricating The Crankshaft

    (2) Transaxle drive pulley (3) Mower belt (4) Electric clutch (5) Clutch mounting bolt 4. Apply a light coating of copper-based anti-seize lubricant to the engine crankshaft. (1) Engine crankshaft 5. Reinstall the transaxle drive pulley, electric clutch, and clutch mounting bolt. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 74: Every 1 Year

    This adjustment should be done every 500 hours of (See Checking the carbon canister air filter on page operation or annually, whichever comes first. In 59.) case the machine is heavily used, air gap settings should be checked more often. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 75: Every 4 Years

     PERIODIC SERVICE EVERY 4 YEARS EVERY 4 YEARS 1. Replacing hydraulic hoses Consult your local KUBOTA Dealer for this service. 2. Replacing fuel lines Consult your local KUBOTA Dealer for this service. SERVICE AS REQUIRED 1. Replacing fuses (2) Slow blow fuse (under red tape)
  • Page 76 Use a large mill file and file along the original bevel (3) RH blade 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 achieved. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 77: Replacing The Mower Belt

    4. To install a new belt, reverse the previous procedure. NOTE : • Tighten the tension pulley bolt securely from 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 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 78: Adjustment

    3. Move the motion control lever to the rearmost adjustments correctly and safely, contact your position and release the motion control lever. local KUBOTA Dealer. 4. After the motion control lever and damper have stopped moving, place the motion control lever in Details regarding motion control lever alignment can be the “NEUTRAL LOCK”...

  • Page 79: Maximum Speed (Forward)

    23.6 to 27.4 N⋅m Tightening torque 2.4 to 2.8 kgf⋅m 17.4 to 20.2 lbf⋅ft 3. Maximum speed (forward) Consult your local KUBOTA Dealer for this service. 4. Motion control lever alignment WARNING (1) Guide plate (A) Motion control lever To avoid serious injury or death:...

  • Page 80: Adjusting The Mower Lift Pedal

    • Check the machine tire pressure. • Apply the parking brake. Inflate the tires to the correct pressure. • Stop the engine and remove the key. (See TIRES AND WHEELS on page 46.) • Wait for all moving parts to stop. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 81: Leveling The Mower Deck (Front-To-Rear)

    2. Turn the cutting height set dial to the 3 in. cutting Anti-scalp rollers must not rest on the wood block. height position. 4. Lower the mower deck. 3. Lower the mower deck. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 82 IMPORTANT : • The difference between both measurements should be less than 6 mm (0.25 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. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 83: General Torque Specification

    7.9-9.2 10.5-12.0 (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 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 84: Tightening Torque Chart

    (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 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 85: Storage

    8. Store the machine in a dry place sheltered from rain. Cover the machine with a vinyl tarp. 9. Moisture content in most grasses can damage the mower and grass catcher if they are not properly cleaned after use. Make sure the mower and the Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 86: Troubleshooting

    • Replace fuel and the fuel filter. • Water or dirt in the fuel system. • Replace fuel and consult your local KUBOTA Dealer. • Fuel hose or fuel filter clogged or damaged. • Clean or replace fuel lines and consult your lo- cal KUBOTA Dealer.
  • Page 87 Spark plug damaged. • Adjust the spark plug gap or replace it. • Faulty spark plug. • Replace the spark plug. • Carburetion problem. • Consult your local KUBOTA Dealer. If you have any questions, contact your local KUBOTA Dealer. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 88: Battery Troubleshooting

    • Charging system • Contact your local trouble. KUBOTA Dealer. If you have any questions, contact your local KUBOTA Dealer. MACHINE TROUBLESHOOTING Symptom (if) Cause Remedy The machine operation is not • The hydrostatic transaxle fluid is insufficient. • Fill with oil.

  • Page 89: Mower Troubleshooting

    MOWER TROUBLESHOOTING Symptom (if) Cause Remedy Blades do not rotate. • The PTO system is not normal: • Consult your local KUBOTA Dealer. PTO system malfunctioning. • The PTO system is normal: • Replace. broken mower belt. Mower belt slipping.
  • Page 90 Slow down. • Debris wrapped around mower spindles. • Clean the mower. • Front of deck too low. • Adjust the mower deck. (See MOWER DECK LEVEL on page 75.) If you have any questions, contact your local KUBOTA Dealer. Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...

  • Page 91: Index

    62,69 cylinder head fins replacing..............70 cleaning..............56 fuses replacing..............70 daily check checking fuel level ..........53 general torque specification........78 checking movable parts........56 grease fittings checking the air intake screen.......54 lubricating..............60 checking the dial cam rotation strength....56 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 92 (forward)..... 74 servicing the machine..........8 adjusting the operating strength......73 starting to operate the machine.......6 aligning..............74 stopping the machine..........8 alignment...............74 storing the machine..........10 checking the alignment......... 74 transporting the machine.........8 operating position..........39 working the machine..........6 stop position............39 Z412KW,Z422KW,Z422KWT,Z411KW,Z421KW,Z421KWT...
  • Page 93 61 replacing..............67 standard type Z411KW..............37 Z421KW..............37 Z421KWT.............. 37 step opening..............52 suspension type Z412KW..............37 Z422KW..............37 Z422KWT.............. 37 switches..............24 throttle cable adjusting..............64 throttle lever..............38 operating............... 31 tightening torque chart..........79 transaxle fluid changing..............67...

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