Kubota GR2020G Operator's Manual
  1. Manuals
  2. Brands
  3. Kubota Manuals
  4. Lawn Mower
  5. GR2020G
  6. Operator's manual

Kubota GR2020G Operator's Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

AS . D . 1 - 1 . - . AK
PRINTED IN U.S.A.
G
R
2
0
2
0
G
·
G
R
2
1
2
0
·
G
R
2
1
2
0
A
Code No. K1270-7122-1
U
©
KUBOTA Corporation 2014
OPERATOR'S MANUAL
1BDAHAOAP0580
READ AND SAVE THIS MANUAL
MODELS
GR2020G
GR2120
GR2120AU

Advertisement

Table of Contents
loading

Related Manuals for Kubota GR2020G

Summary of Contents for Kubota GR2020G

  • Page 1 OPERATOR'S MANUAL MODELS GR2020G GR2120 GR2120AU · · 1BDAHAOAP0580 AS . D . 1 - 1 . - . AK Code No. K1270-7122-1 READ AND SAVE THIS MANUAL © KUBOTA Corporation 2014 PRINTED IN U.S.A.

  • Page 2: Universal Symbols

    State of California to cause cancer and birth equipped with a working spark arrester meeting state laws. Other states or federal areas may have similar laws. defects or other reproductive harm. The spark ignition system of GR2020G complies with Canadian ICES-002.

  • Page 3: Safety First

    FOREWORD You are now the proud owner of a KUBOTA LAWN AND GARDEN TRACTOR. 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 4: Table Of Contents

    CONTENTS SAFE OPERATION .................... SERVICING OF LAWN AND GARDEN TRACTOR ............ 1 SPECIFICATIONS....................... 2 IMPLEMENT LIMITATIONS ..................4 INSTRUMENT PANEL AND CONTROLS..............6 MOWER MOUNTING ....................7 ATTACHING THE MOWER ..................7 Mounting the Mower Deck ....................7 ADJUSTING THE PARALLEL LINKAGE..............9 ADJUSTING THE MOWER DECK (SIDE TO SIDE) ..........
  • Page 5 CONTENTS Fuel Gauge ........................22 Hourmeter........................22 PARKING ....................... 23 Parking..........................23 TRANSPORTING....................23 Directions for Use of Power Steering................23 Glide Steer........................24 OPERATING THE MOWER ..................25 MAKING THE MOST OF YOUR MOWER............. 25 ADJUSTING CUTTING HEIGHT ................25 Cutting Height Control Dial .....................
  • Page 6 CONTENTS EVERY 100 HOURS ....................58 Replacing Air Cleaner Paper Element ................58 Cleaning Engine Shroud Panel..................59 Checking Fuel Lines, Fuel Vapor Lines and Fuel Filter ..........59 Checking Brake ......................61 Checking Fan Drive Belt Tension ................... 61 EVERY 150 HOURS ....................
  • Page 7 CONTENTS ENGINE TROUBLESHOOTING ................80 BATTERY TROUBLESHOOTING ................. 80 MACHINE TROUBLESHOOTING ................. 81 MOWER TROUBLESHOOTING................82 INDEX........................83...
  • Page 8 2. Know the controls and how to stop quickly. 17. Use only attachments recommended by KUBOTA. 3. Pay special attention to the safety labels on the Use proper ballast to front or rear of machine to reduce machine and mower.
  • Page 9 Stay off hills and slopes too steep for absolutely necessary and safe to do so. safe operation. Do not make sudden changes in speed KUBOTA strongly recommends against overriding the or direction. KRA system. 2. Avoid starting or stopping on a slope. If tires lose 13.
  • Page 10 4. USING THE LIFT LINK 6. Do not stop or start suddenly when going uphill or downhill. 1. Use lift link only with KUBOTA authorized attachments 7. Never "freewheel". Do not let the machine travel designed for lift link usage.
  • Page 11 SAFE OPERATION (3) Do not refuel the machine indoors and always clean up spilled fuel or oil. (4) Do not store the machine or fuel container inside where there is an open flame, such as in a water heater. 8. Do not change the engine governor setting or overspeed the engine.
  • Page 12 29. Do not use beverage containers for waste fluids or other products. Someone, particularly children, may drink them by mistake. 30. See your local Recycling Center or KUBOTA Dealer to learn how to recycle or get rid of waste products. A A Material Safety Data Sheet (MSDS) provides specific details on chemical products;...
  • Page 13 SAFE OPERATION 8. DANGER, WARNING AND CAUTION LABELS...
  • Page 14 SAFE OPERATION...
  • Page 15 SAFE OPERATION...
  • Page 16 SAFE OPERATION...
  • Page 17 2. Clean danger, warning and caution labels with soap and water, dry with soft cloth. 3. Replace damaged or missing 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 parts, make sure new label(s) is (are) attached in the same location(s) as the replaced component.

  • Page 18: Safe Operation

    When in need of parts or major service, be sure to see your KUBOTA Dealer. When in need of parts, be prepared to give your dealer the machine, engine and mower serial numbers.

  • Page 19: Specifications

    SPECIFICATIONS SPECIFICATIONS Model GR2020G GR2120 GR2120AU Model GH630 D782 Type Air-cooled Gasoline Liquid-cooled Diesel Total displacement cm (cu. in.) 624 (38.1) 778 (47.5) Gross power kW (HP) 15.3 (20.5)*1 15.6 (21)*1 Rated revolution 3000 Low idling revolution 1200 to 1350 No.
  • Page 20 SPECIFICATIONS Model GR2020G GR2120 GR2120AU Overall length mm (in.) 1990 (78.3) Overall width with mower deck mm (in.) 1550 (61.0) 1550 (61.0) 1700 (66.9) 1550 (61.0) Overall height mm (in.) 1290 (50.8) Dimensions Wheel base mm (in.) 1280 (50.4) Front mm (in.)

  • Page 21: Implement Limitations

    Use of implements which exceed the maximum loading weight listed below, or which are not recommended for use with the KUBOTA Machine may result in malfunctions or failures of the machine, damage to other property and injury to the operator or others. (Any malfunctions or failures of the machine resulting from use with improper implements are not covered by the warranty.)
  • Page 22 Add ballast to rear end if needed for stability. Heavy front mounted attachments tend to lift rear wheels. Add enough ballast to maintain steering control and prevent tipover. The Attachment's Manual shows how much rear ballast is required for your application. Rear ballast are available from your KUBOTA Dealer.

  • Page 23: Instrument Panel And Controls

    INSTRUMENT PANEL AND CONTROLS INSTRUMENT PANEL AND CONTROLS (1) Easy checker(TM)........21 (2) Choke lever (GR2020G)......13 (3) Throttle lever..........19 (4) Head light switch......... 18 (5) Parking brake pedal........19 (6) PTO lever............ 28 (7) Hydraulic lift lever........19 (8) Hour meter..........

  • Page 24: Mower Mounting

    MOWER MOUNTING MOWER MOUNTING ATTACHING THE MOWER To avoid serious injury: A Shut off the engine and remove the key before attaching the mower. BMounting the Mower Deck 1. Park the machine on level ground and place the mower deck at the left side of the machine. 2.
  • Page 25 MOWER MOUNTING (1) Front link (2) Front roller bracket A Adjust the length (L) of the front link. (See "ADJUSTING THE PARALLEL LINKAGE" in "MOWER MOUNTING" section.) 8. Pull the lever fulcrum fixing pin and turn it counter clockwise to lock. 9.

  • Page 26: Adjusting The Parallel Linkage

    MOWER MOUNTING ADJUSTING THE PARALLEL LINKAGE ADJUSTING THE MOWER DECK (SIDE TO SIDE) To avoid serious injury: A Shut off the engine and remove the key. To avoid serious injury: A Set parking brake. A Shut off the engine and remove the key. A Allow the blades to stop before making A Set parking brake.

  • Page 27: Adjusting The Mower Lift Stoppers

    MOWER MOUNTING ADJUSTING THE MOWER LIFT STOPPERS 8. Loosen the locknut at both sides of the machine. The mower lift stoppers are designed for maintaining the Adjust the cutting height fine tuning bolts so that the balance of the mower deck, when lifting the mower to the difference between measurements (L) and (R) is less highest position.

  • Page 28: Operating The Engine

    OPERATING THE ENGINE OPERATING THE ENGINE To avoid serious injury: A Read "SAFE OPERATION" in the front of this manual. A Read the danger, warning and caution labels located on the machine. A To avoid danger of exhaust fume poisoning, do not operate the engine in a closed building without proper ventilation.

  • Page 29: Key Switch

    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.

  • Page 30: Throttle Lever And Choke Lever

    : "SLOW" while the engine is running. A When the temperature is below 0 ), run the [GR2020G] engine at medium speed to warm up the lubricant of the engine and the transmission for at least 10 C Choke lever minutes.

  • Page 31: Cold Weather Starting

    OPERATING THE ENGINE STOPPING THE ENGINE 7. Turn the key switch to the "START" [GR2020G] position and release the key to the "ON" 1. After slowing the engine to half speed, turn the key position when the engine starts. switch to the "OFF" position.

  • Page 32: Engine Stop (By Manual)

    Then contact your every engine part. If load should be applied to the engine local KUBOTA Dealer immediately. without this warm-up period, trouble such as seizure, breakage or premature wear may develop.

  • Page 33: Jump Starting

    1219 meters (4000 ft.), it may be necessary to have an as disabled machine within easy cable reach. "THE authorized KUBOTA dealer install a special high-altitude VEHICLES MUST NOT TOUCH". jet kit in the carburetor. If a high-altitude kit has been 2.

  • Page 34: Operating The Machine

    OPERATING THE MACHINE OPERATING THE MACHINE OPERATING NEW MACHINE How a new machine is operated and maintained To avoid serious injury or death: determines the life of the machine. A Do not operate the mower without the deflector A new machine just off the factory production line has shield in the down position.

  • Page 35: Starting

    OPERATING THE MACHINE STARTING C Suspension adjustment Turn the suspension adjust knob to achieve the optimum suspension setting. 1. Adjust the operator's position. BOperator's Seat To avoid serious injury: A Make sure that the seat is completely secured after each adjustment. A Do not allow any person other than the operator to ride on the machine.

  • Page 36: Hydraulic Lift Lever

    A Do not operate at slow Engine rpm. Move the throttle lever above 1/2. A If noises are heard when implement is lifting after the hydraulic lift lever has been activated, the hydraulic mechanism is not adjusted properly. Contact your local KUBOTA Dealer for adjustment. (1) Brake pedal...

  • Page 37: Speed Control Pedal

    OPERATING THE MACHINE 6. Depress the Speed Control Pedal. BCruise Control Device The cruise control device is designed for machine operating efficiency and operator's comfort. This device BSpeed Control Pedal will provide a constant forward operating speed by mechanically holding the speed control pedal at a selected position.

  • Page 38: Stopping

    While driving, make the following checks to see that all the parts are functioning normally. A For checking and servicing of your machine, consult your local KUBOTA Dealer for instructions. BEngine Overheating Precautions If the coolant temperature warning light come on or the buzzer sounds, take the following actions.

  • Page 39: Fuel Gauge

    (1) Hours used (F) "FULL" A Use proper fuel for your machine, or it damages the machine. GR2020G: Gasoline, Gasohol, MTBE GR2120, GR2120AU: Diesel fuel Gasohol (up to 10% ethyl alcohol, 90% unleaded gasoline by volume) or Methyl Tertiary Butyl Ether...

  • Page 40: Parking

    OPERATING THE MACHINE PARKING TRANSPORTING BParking 1. Transport the machine on a trailer. A Fasten the machine to the trailer. A To prevent the hood from opening by wind while in transit, it is necessary to either load the machine To avoid serious injury: forward or use a suitable tie down for the hood.

  • Page 41: Glide Steer

    (C) Rotation speed: "DOWN" If the adjustment is not correct or some malfunction occurs in the system, rear clutches are engaged all times and result in larger turn radius or turf damage. In that case, contact your Kubota dealer for checking.

  • Page 42: Operating The Mower

    OPERATING THE MOWER OPERATING THE MOWER MAKING THE MOST OF YOUR MOWER ADJUSTING CUTTING HEIGHT 1. When using your mower for the first time, choose a smooth level area and cut in straight and slightly overlapping strips. To avoid serious injury or death: 2.
  • Page 43 OPERATING THE MOWER (1) Anti-scalp roller (Rear) (1) Hydraulic lift lever (2) Cutting height control dial 5. Lower the mower deck by pushing the hydraulic lift lever downward. This lowers the mower deck from the "Transport" position to the "Operating" position. 6.

  • Page 44: Operating The Mower

    55 mm (2.0" or 2.25")) A Do not operate the mower without the discharge deflector being in place properly. A This machine is equipped with the KRA (KUBOTA Reverse Awareness) system. This feature shuts down the engine if the operator attempts reverse travel while any PTO driven implement is engaged.

  • Page 45: Pto Lever

    OPERATING THE MOWER BPTO Lever BKRA system Override Mode To engage mower blade, push the PTO lever to the "ENGAGED" position. To stop the mower blades, pull the PTO lever to the "DISENGAGED" position. To avoid serious injury: A Before and when backing, look down and behind the machine to be sure no bystanders, especially children, have entered the area.
  • Page 46 OPERATING THE MOWER (1) The K.R.A. System Override Mode can not be activated by pushing the switch while the speed control pedal is depressed to initiate rearward movement. (2) The override switch light flashes while activated as a reminder to the operator that PTO (i.e. mower, tiller, etc.) remains engaged during reverse travel.

  • Page 47: Cleaning

    CLEANING CLEANING To avoid serious injury: A Do not clean the machine with engine running. A Be sure to set the parking brake during cleaning. CLEANING WITH WATER The use of a high pressure cleaner is not recommended. However if you use one, take care not to splash water on engine parts such as the air filter, exhaust muffler, battery.

  • Page 48: Tire And Wheels

    TIRE AND WHEELS TIRE AND WHEELS TIRES BInflation Pressure Though the inflation pressure is factory-set to the prescribed level, it naturally drops slowly in the course of To avoid serious injury: time. Thus, check it everyday and inflate as necessary. A Do not attempt to mount a tire.

  • Page 49: Wheels

    TIRE AND WHEELS WHEELS A When re-fitting a wheel, tighten the wheel bolts to the following torques then recheck after travelling 200 m (220 yards) changing directions several times. A Wheels with beveled or tapered holes: Use the tapered wheel bolts. (Front) (1) Bolt Front 108.5 to 130.2 N-m (11.07 to 13.28 kgf-m)

  • Page 50: Maintenance

    MAINTENANCE MAINTENANCE SERVICE INTERVALS The following servicing tasks should be carried out on the machine at the stated running-time intervals. [GR2020G] Indication hour meter (Hr) Ref. Items After Page 600 Hr every Engine oil Change 200 Hr Engine oil every...
  • Page 51 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.
  • Page 52 MAINTENANCE [GR2120, GR2120AU] Indication on hour meter (Hr) After Ref. Items since page every Engine oil Change 200 Hr every Engine oil filter Replace 200 Hr every Transmission fluid Change 400 Hr every Transmission oil filter Replace 200 Hr every Transmission strainer Clean 400 Hr...
  • Page 53 *3 Replace only if necessary. A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA non- road emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction.

  • Page 54: Lubricants, Fuel And Coolant

    Note *1 Oil amount when the oil level is at the upper level of the oil level gauge. *2 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 55 Around the pin of the mower link Pivot of mower link Pivot of lift arm Front link Link fulcrum Choke cable [GR2020G only] Throttle cable [MOWER] Until grease overflows Multipurpose EP2 Grease (NLGI Grade No. 2) Mower universal joint Spindle shafts...
  • Page 56 C 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 fluid. Super UDT-2 is a proprietary KUBOTA formulation that deliveries superior performance and protection in all operating conditions.
  • Page 57 We recommend the use of KUBOTA UDT or SUPER UDT fluid for optimum protection and performance. (Consult your local KUBOTA Dealer for further detail.) Do not mix different brands together.

  • Page 58: Periodic Service

    PERIODIC SERVICE PERIODIC SERVICE DAILY CHECK To prevent trouble from occurring, it is important to know To avoid serious injury: the condition of the machine. Check it before starting. A Do not work under any hydraulically supported devices. They can settle, suddenly leak down, or be accidentally lowered.

  • Page 59: Checking Engine Oil Level

    If either of these do not 4. Add new oil to the prescribed level at the oil port if Starting the operate properly, necessary. engine contact your local KUBOTA Dealer immediately. Check for abnormal noise and vibration. Check the areas where Others previous trouble was experienced.

  • Page 60: Checking Amount Of Fuel And Refueling

    GR2120AU C [GR2020G] A Do not mix oil with gasoline. A Tighten the fuel cap until it clicks. A Do not use the fuel cap other than KUBOTA approved one. (1) Oil level dipstick (A) "UPPER LEVEL" Unleaded fuel is recommended. Regular leaded gasoline (B) "LOWER LEVEL"...

  • Page 61: Checking And Cleaning Radiator And Screen To Prevent Overheating

    A The air intake area must be clear of debris to prevent the engine from overheating. [GR2020G] Daily or after every 5 hours of operation, check to be sure the panel screen is clean.

  • Page 62: Checking Tire Pressure

    PERIODIC SERVICE 2. Remove the dust from between the fins and the tube. 3. Tighten the fan drive belt as necessary. For this, refer BChecking Tire Pressure to "EVERY 100 HOURS" in Maintenance section. 4. If scale forms in the tube, clean with the scale inhibitor or its equivalent.

  • Page 63: Checking Transmission Fluid Level

    PERIODIC SERVICE BChecking Coolant Level [GR2120, GR2120AU] To avoid serious injury: A Be sure to stop the engine and remove the key before checking coolant level. A 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.

  • Page 64: Lubricating All Grease Fittings

    A If the radiator cap has to be removed, follow the caution above and securely retighten the cap. A Use clean, distilled water and anti-freeze to fill the radiator and the recovery tank. A If water should leak, consult your local KUBOTA Dealer. (1) Spindle shaft (2) Belt tension pivot...

  • Page 65: Checking Movable Parts

    If any of the movable parts, such as levers and pedals, is Paper Element not smoothly moved because of rust or anything sticky, do [GR2020G] not attempt to force it into motion. In the above case, remove the rust or the sticky thing, and A Operating in dusty conditions requires more frequent apply oil or grease on the relevant spot.

  • Page 66: Every 50 Hours

    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. A Check the following tests before operating the machine.

  • Page 67: Checking Opc System

    A Sit on operator's seat for all tests. A Check the following tests before operating the machine. A Check the following tests before operating the Test 1 (KUBOTA Reverse Awareness system machine. (KRA system) 1) 1. Start and run the engine at half throttle.

  • Page 68: Cleaning Air Cleaner Element

    PERIODIC SERVICE (1) Brake pedal (1) Air cleaner cover (2) PTO lever (2) Air cleaner element (3) Key switch (3) Evacuator valve (4) Throttle lever (5) KRA system override switch A The air cleaner uses a dry element, never apply oil. BCleaning Air Cleaner Element A Do not run the engine with the filter element removed.

  • Page 69: Checking Carbon Canister Air Filter

    BChecking Carbon Canister Air Filter 5. Reinstall the carbon canister air filter and secure it with [GR2020G] the cover. Check the carbon canister air filter every 50 hours of operation. (more often under extremely dusty or dirty A Operating in dusty condition may require more conditions.)

  • Page 70: Checking Gear Box Oil Level

    PERIODIC SERVICE BChecking Gear Box Oil Level BGreasing To avoid serious injury: To avoid serious injury: A Always stop the engine and remove the key A Be sure to stop the engine and remove the key before checking oil. before greasing. 1.

  • Page 71: Oiling

    PERIODIC SERVICE BOiling To avoid serious injury: A Be sure to stop the engine and remove the key before oiling. Oil the following locations. (1) Glide steer rear arm (1) Speed control pedal shaft (RH) (A) Fender (1) Glide steer arm (RH) (1) Speed control pedal shaft (LH) (1) Glide steer arm (LH)
  • Page 72 PERIODIC SERVICE (1) Cruise control link (1) Around the hole of the mower link (LH, RH) (2) Around the pin of the mower link (LH, RH) (3) Pivot of mower link (LH, RH) (4) Pivot of liftarm (LH, RH) (1) PTO lever (fulcrum) (2) Hydraulic lift lever (fulcrum) (1) Front link (1) Seat adjuster...
  • Page 73 PERIODIC SERVICE (1) Choke cable (1) Throttle cable (2) Throttle cable (1) Throttle cable (1) Throttle cable...

  • Page 74: Checking Battery Condition

    PERIODIC SERVICE A Mishandling the battery shortens the service life and BChecking Battery Condition adds to maintenance costs. The original battery is maintenance free, but needs some servicing. If the battery is weak, the engine will be difficult to start To avoid the possibility of battery explosion: and the lights will be dim.

  • Page 75: Every 100 Hours

    PERIODIC SERVICE EVERY 100 HOURS BReplacing Air Cleaner Paper Element [GR2020G] 1. Loosen the cover retaining knob and remove the cover. (1) Battery (+): Positive terminal (2) Ground cable (-): Negative terminal (1) Cover retaining knob (2) Cover 2. Remove the element cover nut, the element cover, and the paper element with the precleaner.

  • Page 76: Cleaning Engine Shroud Panel

    5. Reinstall the paper element, precleaner, element A Only for GR2020G, check the fuel vapor lines. cover, element cover nut, and air cleaner cover. The fuel line and fuel vapor line connections should be Secure cover with the cover retaining knob.
  • Page 77 PERIODIC SERVICE (1) Pipe clamps (1) Pipe clamps (2) Fuel filter (2) Fuel line (3) Fuel line (3) Fuel filter (4) Fuel cock (1) Pipe clamps (1) Fuel vapor line (2) Fuel line (2) Pipe clamps (3) Fuel filter (1) Fuel vapor line (A) Right rear tire (2) Pipe clamps (3) Carbon canister...

  • Page 78: Checking Brake

    Correct free travel ranges from 15 to 25 mm (0.59 to 0.98 If the fan drive belt becomes loose, the engine may in.). If it is not correct, consult your local KUBOTA dealer. overheat. To adjust, remove the right cover. Then loosen the tension bolt and adjusting bolt and move the dynamo outward to tighten the belt.

  • Page 79: Every 150 Hours

    PERIODIC SERVICE EVERY 150 HOURS BChanging Gear Box Oil To avoid serious injury: A Be sure to stop the engine and remove the key before changing the oil. 1. To drain the used oil, remove the filler plug at the gear box, tilt the mower deck and drain the oil completely into the oil pan.

  • Page 80: Every 200 Hours

    Add engine oil to proper level. Check for oil leaks around filter gasket. A To prevent serious damage engine, replacement element of the recommended type must be used. Use only a genuine KUBOTA filter or its equivalent. (1) Engine oil filter cartridge...

  • Page 81: Changing Engine Oil

    PERIODIC SERVICE BChanging Engine Oil To avoid serious injury: A Be sure to stop the engine and remove the key before changing the oil. A Allow engine to cool down sufficiently; oil can be hot and may cause burns. 1. To keep dirt, debris, etc., out of the engine, clean the area around the oil fill cap/dipstick before removing it.

  • Page 82: Replacing Transmission Oil Filter Cartridge

    A To prevent serious damage or premature failure to the hydraulic system, the replacement filter must be a highly efficient, 10 filter. Use only a genuine KUBOTA filter or its equivalent. (1) Rear cover 3. Remove the oil filter cartridge by using the filter wrench.

  • Page 83: Checking Radiator Hose And Clamp

    PERIODIC SERVICE BChecking Radiator Hose and Clamp BChecking Hydraulic Hose [GR2120, GR2120AU] Check to see if radiator hoses are properly fixed every 200 hours of operation or 6 months, whichever comes first. To avoid serious injury: 1. If hose clamps are loose or water leaks, tighten clamps A Be sure to stop the engine and remove the key securely.
  • Page 84 PERIODIC SERVICE (1) Power steering hose (RH) (1) Mower lift cylinder hose (1) Power steering hose (LH) (1) Power steering hose (LH)

  • Page 85: Adjusting Front Axle Pivot

    BAdjusting Front Axle Pivot If the front axle pivot pin adjustment is not correct, vibration in the front wheel can occur. When vibration occurs please contact your KUBOTA Dealer to adjust the free travel of front axle. BChecking Spark Plug Condition & Gap...

  • Page 86: Replacing Fuel Filter

    PERIODIC SERVICE BReplacing Fuel Filter [GR2020G] Change fuel filter every 200 hours. Consult your local KUBOTA Dealer for this service. EVERY 400 HOURS BChanging Transmission Fluid To avoid serious injury: A Be sure to stop the engine and remove the key before changing or checking the oil.

  • Page 87: Cleaning Transmission Strainer

    PERIODIC SERVICE BCleaning Transmission Strainer BChanging Front Axle Case Oil When changing the transmission fluid, disassemble and 1. Park the machine on a firm, flat and level surface. 2. To drain the used oil, remove the right and left drain rinse the strainer with nonflammable solvent to completely plugs and filling plug at the front axle case and drain clean off filings.

  • Page 88: Replacing Fuel Filter

    KUBOTA Dealer for this service. EVERY 1500 HOURS BChecking Fuel Injection Nozzle (Injection Pressure) [GR2120, GR2120AU] Consult your local KUBOTA Dealer for this service. EVERY 3000 HOURS (1) Radiator drain plug BChecking Injection Pump [GR2120, GR2120AU] Consult your local KUBOTA Dealer for this service.

  • Page 89: Anti-Freeze

    Always use a 50/50 mix of long-life coolant and clean soft water in KUBOTA engines. Consult your local KUBOTA dealer concerning coolant for extreme conditions. 1. Long-life coolant (hereafter LLC) comes in several types. Use ethylene glycol (EG) type for this engine.

  • Page 90: Every 2 Years

    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 2 years. A The above data represent industry standards that necessitate a minimum glycol content in the concentrated anti-freeze.

  • Page 91: Replacing Bulbs

    PERIODIC SERVICE BReplacing bulbs (A) Replacement of the headlight bulb 1. Open hood. 2. Turn bulb socket to remove socket from headlight housing. 3. Push bulb down and turn 1/4 turn to remove bulb from the socket. 4. Install new bulb to the socket. 5.
  • Page 92 PERIODIC SERVICE C Replacing 1. Remove the mower deck from the machine and turn it over to expose the blades. 2. Wedge a block of wood between the blade and mower housing or use a box wrench over the pulley nut to prevent the spindle from rotating while removing the blade bolts;...

  • Page 93: Mower Belt Replacement

    PERIODIC SERVICE 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. Clean around the gear box. 4. Remove the belt from the tension pulley. 5.

  • Page 94: Adjustment

    ADJUSTMENT ADJUSTMENT GENERAL TORQUE SPECIFICATION American standard cap screws Metric cap screws with UNC or UNF threads GR.5 GR.8 Class 8.8 Class 10.9 SAE grade No. Property class (lbf-ft) 8 - 9.6 12 - 14.4 (lbf-ft) 7.2 - 8.3 (N-m) 10.7 - 12.9 16.1 - 19.3 (N-m)

  • Page 95: Tightening Torque Chart

    ADJUSTMENT TIGHTENING TORQUE CHART Thread Hexa-Bolt No mark size Head size lbf-ft kgf-m lbf-ft kgf-m d (mm) B (mm) 13.0 - 15.2 17.8 - 20.6 1.9 - 2.1 17.5 - 20.3 23.5 - 27.5 2.4 - 2.8 12 or 13 (14.1 1.1) (19.2...

  • Page 96: Storage

    STORAGE STORAGE [GR2020G] 11. The fuel system must be completely emptied, or the gasoline must be treated with a stabilizer to prevent To avoid serious injury: deterioration. If you choose to use a stabilizer, follow A To reduce fire hazards, allow the engine and...

  • Page 97: Troubleshooting

    A [For GR2120, GR2120AU] Loose or defective fan belt. A [For GR2120, GR2120AU] Coolant flow route corroded. A [For GR2020G] Cooling fan trouble. If you have any questions, contact your local KUBOTA Dealer. BATTERY TROUBLESHOOTING Probable cause Starter does not function.

  • Page 98: Machine Troubleshooting

    A Hydrostatic neutral system is not correctly adjusted. depressed. (Engine is operated.) Larger turn radius or turf damage by inside rear axle issue. A Glide steer system is not correctly adjusted. If you have any questions, contact your local KUBOTA Dealer.

  • Page 99: Mower Troubleshooting

    A Ground speed too fast. A Debris wrapped around mower spindles. Grass tips are jagged and turn grayish brown. A Blades dull. A Blades worn. A Mower deck is not level. If you have any questions, contact your local KUBOTA Dealer.

  • Page 100: Index

    INDEX INDEX Hydraulic Lift Lever ........19 Air Cleaner Element ........51 Immediately Stop the Engine if: ..... 21 Air Cleaner Element ........71 Inflation Pressure........... 31 Air Cleaner Paper Element......58 Injection Pump ..........71 Amount of Fuel and Refueling......43 Intake Air Line..........68 Anti-freeze ............72 Intake Air Line..........

This manual is also suitable for:

Gr2120Gr2120au

Table of Contents