Order the right part the first time. This Kubota L4400DT parts catalog runs to 315 pages of exploded views, with crankcase, injection pump, rear differential, steering cylinder, and 3-point linkage each broken down into a full parts list of reference numbers, quantities, and interchange codes. The drivetrain gets thirty pages on its own, covering the main shaft, countershaft, PTO clutch, and all three range-shift fork assemblies separately. Need the battery? It's the 80D26R. Checking a circuit? Fuse ratings run from 5A to 40A, listed by position. Replacing a headlight? Both old-type and new-type bulb numbers are spelled out. A wrong part means another round of shipping and downtime, so the catalog is bookmarked and keyword-searchable: pick the system, find the number, place the order.
What's Inside This Kubota L4400DT Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Crankcase | 7-8 | Cap Sealing, Gasket, Assy Pump Oil, Gear Oil Pump Drive |
| Oil Pan | 9-10 | Filter Oil, O Ring, Guide Oil Gauge |
| Cylinder Head | 11-12 | Hook Engine, Cap Protector, Cap Sealing, Guide Inlet Valve, Seat Inlet Valve, Seat Exhaust Valve |
| Gear Case | 13-14 | O Ring, Cover, Spring, Seat Valve, Flange Water Return, Cartridge Oil Filter, Assy Gear Case H/m |
| Head Cover | 15-16 | Pipe Water Return, O Ring, Washer, Clamp |
| Main Bearing Case | 17-18 | Seal Oil, Bolt |
| Camshaft and Idle Gear Shaft | 19-20 | Tappet, Push Rod, Stopper Camshaft, Ball |
| Piston and Crankshaft | 21-22 | Assy Connecting Rod, Metal Crankpin Std/set, Metal Crankpin - .20MM/SET, Bush Crankshaft, Slinger Oil, Collar Crankshaft, O Ring, Seal Oil |
| Flywheel | 23-24 | Hub Spline, Cover, Packing Cover, Bolt |
| Fuel Camshaft | 25-26 | Assy Camshaft Fuel, Gear Injection Pump, Sleeve Governor, Stopper Fuel C/shaft |
| Engine Stop Lever | 27-28 | O Ring, Gasket, Seal Oil, Pin |
| Injection Pump | 29-30 | Joint Eye, Assy Cock Jet Start, Assy Pump Fuel, Assy Tube Fuel, Clip Pipe, Gasket |
| Governor | 31-32 | Bolt, Washer |
| Speed Control Plate | 33-34 | Gasket, Pipe Lock, Seal Oil, Nut |
| Nozzle Holder and Glow Plug | 35-36 | Assy Pipe Over Flow, Kit Holder Nozzle, Gasket, Seal Heat, Pipe Injection, Clip Pipe |
| Nozzle Holder [Component Parts] | 37-39 | Kit Holder Nozzle, Spring Nozzle, Piece Distance, Push Rod, Piece Nozzle, Assy Washer Adjust, Gasket, Seal Heat |
| Water Flange and Thermostat | 40-41 | Gasket, Cover Thermostat, Gasket Thermostat, Plug |
| Water Pump | 42-43 | Body Water Pump, Bearing, Assy Seal Mechanical, Bolt |
| Valve and Rocker Arm | 44-45 | Valve Inlet, Valve Exhaust, Spring Valve, Retainer Valve Sp, Collet Valve Spring Set, Seal Valve Stem, Cap Valve, Bracket Rocker Arm |
| Inlet Manifold | 46-47 | Inlet Manifold Diagram, Inlet Manifold Parts List, Assy Manifold Inlet, Pipe Water Return, Gasket In-Manifold, Bolt |
| Exhaust Manifold/Muffler | 48-49 | Manifold Exhaust, Gasket Muffler, Stud, Nut |
| Air Cleaner | 50-51 | Band Pipe, Washer, Bolt, Clamp |
| Upper Gasket Kit | 52-53 | Seal Valve Stem, Gasket, Seal Heat, Gasket Thermostat, Gasket Muffler |
| Lower Gasket Kit | 54-55 | Gasket, O Ring, Seal Oil |
| Accelerator Lever | 56-57 | Spring Accel.lever, Nut, Washer, Pin |
| Accelerator Linkage | 58-59 | Cushion, Washer, Pin |
| Fuel Tank | 60-61 | Fuel Tank Diagram, Fuel Tank Parts List, Tank Fuel, Assy Cap Fuel, Cap Fuel, Spacer, Gasket, Plate Fuel Tank |
| Fuel Pipe and Fuel Filter | 62-63 | Assy Filter Fuel, Assy Tube Fuel, Tube Pipe, Clip Pipe, Pipe Fuel, Band Cord |
| Fuel Filter [Component Parts] | 64-65 | Assy Filter Fuel, Assy Body, Handle Filter, Gasket, Retainer Handle, Plate Thrust, O Ring, Ring Retainer |
| Fan | 66-67 | Flange Fan, Pulley Fan, V Belt |
| Water Pipe | 68-69 | Water Pipe Diagram, Water Pipe Parts List, Hose Radiator Upper, Band, Hose Radiator Lower |
| Radiator | 70-71 | Cap Radiator, O Ring, Sponge, Rubber |
| Reserve Tank | 72-73 | Assy Tank Reserve, Assy Cap, Gasket, Clip Pipe |
| Alternator | 74-75 | Assy Alternator, Key, Bolt, Washer |
| Alternator [Component Parts] | 76-77 | Assy Alternator, Pulley Alternator, Collar, Assy Frame Drive End, Plate Retainer, Rotor, Cover Bearing, Frame End |
| Starter | 78-79 | Assy Starter, Stud, Nut, Bolt |
| Starter [Component Parts] | 80-81 | Assy Starter, Assy Yoke, Assy Armature, Bearing, Roller, Retainer, Gear, Frame End |
| Battery | 82-83 | Battery 80D26R, Cord Battery, Cord Earth, Cushion, Retainer Battery |
| Switch 1 / Relay | 84-85 | Relay Starter, Harness Main Switch, Switch Combination, Assy Body Switch, Lever Flasher, Knob Light, Relay Glow, Assy Key Main Switch |
| Switch 2 / Sensor | 86-87 | Sensor Water Temp, Switch Oil, Switch Lever, Band Cord |
| Panel Board | 88-89 | O Ring, Grommet, Clamp, Screw |
| Panel Board [Component Parts] | 90-91 | Panel Board [Component Parts] Diagram, Panel Board [Component Parts] Parts List, Assy Panel, Comp.meter, Assy Case, Assy Bulb, Glass, Screw |
| Head Light [Old Type] | 92-93 | Assy Light Head, Bulb 25W, Assy Wire Harness, Bolt |
| Head Light [New Type] | 94-95 | Assy Light Head, Bulb 25W, Assy Wire Harness, Bolt |
| Hazard Light | 96-97 | Assy Light Hazard, Lens Hazard Light, Bulb Light 27W, Screw |
| Rear Lamp | 98-99 | Assy Light Combi.rh, Lens, Gasket, Bulb 23W, Assy Light Combi.lh, Holder |
| Electrical Wiring | 100-101 | Case Fuse Box, Puller Fuse, Fuse 5A, Clip, Band Cord |
| Clutch | 102-103 | Clutch Diagram, Clutch Parts List, Assy Plate Pressure, Pin Straight, Bolt, Comp.disk Clutch |
| Clutch Lever | 104-105 | Case Propeller Shaft, Bolt, Pin, Key |
| Clutch Pedal | 106-107 | Cover Pedal, U Joint, Nut, Pin |
| Clutch Housing | 108-109 | Bush, Plug, Washer, Pin |
| Mid Case | 110-111 | Seal Piston, O Ring, Circlip, Plug |
| Transmission Case | 112-113 | Pin, Stud, Bolt, Washer |
| Main Shaft | 114-115 | Seal Oil, Seal First Shaft, Ball, Circlip |
| Countershaft | 116-117 | Bearing Needle, Collar Thrust, Coupling, Ball |
| Range Gear Shaft | 118-119 | Coupling, Collar Thrust, Bearing Needle Set, Ball |
| Spiral Bevel Pinion | 120-121 | Case, Bearing Taper-Roller, Cover Bearing, Bearing Roller |
| Rear Differential | 122-123 | Shaft Diff.pinion, Pinion Diff. 12T, Gear Diff.side RH 20T, Gear Diff.side LH 20T, Shifter Diff.lock, Bearing Taper-Roller, Support Diff |
| PTO Countershaft | 124-125 | Gear-Shaft I-Pto, Bearing Roller, Bearing Ball, Countershaft I-Pto, Collar, Gear I-Pto |
| PTO Clutch | 126-127 | Ring Seal, Collar Distance, Ball, Circlip |
| PTO Clutch [Component Parts] | 128-129 | D Ring Outer, D Ring Inner, O Ring, Disk Clutch |
| PTO Shaft | 130-131 | Collar Thrust, Bearing Needle, Collar Oil Seal, Seal Oil, Slinger, O Ring, Cap |
| Main Gear Shift Fork | 132-133 | Spring, Circlip, Pin, Ball |
| Range Gear Shift Fork | 134-135 | Spring, O Ring, Stopper, Fork Creep Shift, Arm Shift |
| Differential Lock Shift Fork | 136-137 | Fork Diff.lock Shift, Shaft Fork, Seal Oil, Rod Diff.lock, Spring |
| Main Gear Shift Lever | 138-139 | O Ring, Shield, Spring PTO Shift, Poppet PTO Shift |
| Range Gear Shift Lever | 140-141 | Bush, Nut, Washer, Circlip |
| Range Gear Shift Rod | 142-143 | Pin, Nut |
| PTO Clutch Control Lever | 144-145 | Pipe Hydraulic, Bush, Grip PTO Lever, Bolt |
| PTO Clutch Valve [Component Parts] | 146-147 | O Ring, Ring, Collar Thrust, Seal Oil |
| Front Wheel Drive Lever | 148-149 | O Ring, Stopper, Bolt, Pin |
| Rear Axle LH | 150-151 | Axle Rear, Spacer, Seal Oil, Gear 60T, Case Rear Axle |
| Rear Axle RH | 152-153 | Axle Rear, Spacer, Seal Oil, Gear 60T, Case Rear Axle |
| Brake LH | 154-155 | Cam Brake LH, O Ring, Plate Brake Cam LH, Disk Brake Main, Plate, Lever Brake Cam LH |
| Brake RH | 156-157 | Cam Brake RH, O Ring, Plate Brake Cam RH, Disk Brake Main, Plate, Lever Brake Cam RH |
| Brake Rod 1 (Brake Pedal) | 158-159 | Bush, Assy Lever Brake RH, Shaft Brake LH, Shaft Brake RH, Rod Brake Lower, Turnbuckle |
| Brake Rod 2 (Brake Cam) | 160-161 | Rod Brake LH, Rod Brake RH, Pin, Washer |
| Brake Pedal | 162-163 | Cover Pedal, Circlip, Washer, Nut |
| Front Axle Frame | 164-165 | Bolt, Plug |
| Propeller Shaft | 166-167 | Coupling, Seal Oil, Sleeve, Circlip |
| Front Wheel Drive Shaft | 168-169 | Spring, Ball |
| Front Differential Case | 170-171 | Gasket, O Ring, Pipe Breather, Tube Fuel, Nipple Grease, Collar Thrust, Band Cord |
| Bevel Gear (Front) | 172-173 | Bearing Taper-Roller, Collar .8MM, Seal Oil, Nut |
| Differential (Front) | 174-175 | Case Diff, Shaft Pinion, Pinion Diff. 12T, Collar Pinion Thrust, Gear Diff.side 24T |
| Front Axle Case LH | 176-177 | Plug, Washer, Circlip, Ball |
| Front Axle Case RH | 178-179 | Plug, Washer, Circlip, Ball |
| Differential Gear Shaft | 180-181 | Shaft Yoke LH RH, Shaft Yoke RH LH, O Ring, Circlip |
| Front Axle | 182-183 | Axle Front, Collar, Seal Oil, O Ring |
| Steering Handle | 184-185 | Seal Oil, O Ring, Circlip, Bolt |
| Steering Controller | 186-187 | O Ring, Nut, Washer |
| Steering Support [Old Type] | 188-189 | Bush, Bearing Needle, Seal Oil, Pin |
| Steering Support [New Type] | 190-191 | Bush, Bearing Needle, Seal Oil, Pin |
| Steering Cylinder | 192-193 | Clip, Cover Dust, Joint Tie Rod, Ring Set |
| Steering Cylinder [Component Parts] | 194-195 | Cylinder Hydraulic, Seal Piston, Assy End Rod, Bush, Seal Rod, Kit Seal |
| Hydraulic Pump | 196-197 | Holder Pump, O Ring, Gear Pump Drive 17T, Assy Pump Hydraulic |
| Hydraulic Pump [Component Parts] | 198-199 | Assy Pump Hydraulic, Bush, Gear Hydraulic Pump, Seal Oil |
| Regulator Valve | 200-201 | Assy Valve Regulator, Joint, Gasket, O Ring |
| Hydraulic Oil Line(Inlet) | 202-203 | Magnet Oil Filter, O Ring, Band Pipe, Bolt |
| Hydraulic Oil Line(Delivery) | 204-205 | O Ring, Joint, Gasket, Bolt |
| Hydraulic Oil Line (Ps) | 206-207 | Adapter, Band Pipe, Joint, Washer |
| PTO Hydraulic Oil Line | 208-209 | Gasket, Pipe Rubber, Clamp, Bolt |
| Hydraulic Outlet Block | 210-211 | O Ring, Spring Relief, Seat Relief Valve, Poppet, Collar, Joint, Gasket |
| Hydraulic Cylinder | 212-213 | Bush, Gasket, Breather, O Ring, O Ring W/ O Remote Control |
| Lift Arm | 214-215 | Piston Hydraulic, O Ring, Ring Back Up, Rod Hydraulic, Collar |
| Feed Back Lever | 216-217 | Joint Spool, Lever Spool Drive, O Ring, Set Plate, Spring Plate, Shaft Back Lever, Lever Feed Back, Rod Feed Back |
| Control Valve | 218-219 | O Ring, Cover Cylinder Front, Collar Adjusting, Shaft, Pipe, Grip, Spring, Assy Valve Control |
| Control Valve [Component Parts] | 220-221 | Assy Valve Control, Spring Spool, Holder Spring, Poppet, Spring, O Ring, Plate, Sleeve |
| Position Control Lever | 222-223 | Grip Lever, Stopper, Pin, Bolt |
| Top Link | 224-225 | Nipple Grease, Joint Top Link, Holder Top Link RH W/ O Draft, Holder Top Link LH W/ O Draft |
| Point Linkage 1 (Lower Link) | 226-227 | Pin, Washer, Nut, Bolt |
| Point Linkage 2 (Lift Rod) | 228-229 | Assy Rod Lift RH, Rod Lift Lower, Rod Lift Upper, Nipple Grease, Rod Lift LH, Ring Snap |
| Drawbar | 230-231 | Bolt, Pin |
| PTO Protector | 232-233 | Spring Plate, Bolt, Washer, Nut |
| Front Grille | 234-236 | Bolt, Washer, Nut |
| Hood(Bonnet) Front Support | 237-238 | Bonnet Under, Bonnet Front LH, Support Front, Bracket, Bolt Wing, Sponge Bonnet Lower |
| Hood(Bonnet) | 239-240 | Handle Mascot, Lock Bonnet, Spring, Cushion |
| Hood(Bonnet) Side | 241-242 | Bonnet Side LH, Bonnet Side RH, Bolt Flange, Bracket, Sponge Bonnet Side, Shield |
| Hood(Bonnet) Side Cover | 243-244 | Rubber Release Rod, Bolt, Washer |
| Shutter Plate | 245-247 | Shield, Cushion Tank, Cushion, Nut |
| Hood(Bonnet) Rear | 248-249 | Clamp, Screw, Washer, Nut |
| Fender | 250-251 | Label Safety English, Grommet Circle, Grip, Plug |
| Fender Support | 252-253 | Bolt, Washer, Nut |
| Floor Seat Cover / Fender Bracket | 254-255 | Bolt |
| Step | 258-259 | Cover Accel.pedal, Bolt, Washer, Nut |
| Tool Box | 260-261 | Case Tools, Bolt Flange |
| ROPS (Rigid Type) | 262-263 | Frame LH, Frame RH, Plate, Manual Assembly |
| ROPS (Foldable Type) | 264-265 | Frame LH, Frame RH, Frame Upper, Manual Assembly |
| Smv Emblem | 266-267 | Sign Smv, Socket Smv Sign, Bolt Square Neck, Spade Smv Sign, Washer Spring |
| Front Wheel (27*8.50-15) | 268-269 | Assy Front Wheel, Tire, Wheel, Label Tire, Stud Wheel, Nut |
| Front Wheel (8.3-16) | 270-271 | Wheel ABR8753BR, Label Tire RH ABR8753BR, Wheel ABR8753BL, Label Tire LH ABR8753BL |
| Front Wheel (10.0-16.5) | 272-273 | Tire, Wheel, Label RH, Label LH, Stud Wheel, Nut |
| Front Wheel (27-10.50Ll15) | 274-275 | Tire Assy, Tire, Tube, Wheel, Stud Wheel, Nut |
| Rear Wheel (14.9-24) | 276-277 | Label Tire RH ALR6811R, Label Tire LH ALR6811L, Bolt, Washer |
| Rear Wheel (44*18-20) | 278-279 | Label Tire ALR6803, Stud, Nut, Washer |
| Rear Wheel (17.5L-24) | 280-281 | Label Tire RH ALR6807R, Label Tire LH ALR6807L, Stud, Nut |
| Label 1 (Front) | 282-283 | Label Pad, Label Start Caution, Label Fan Warning, Label Muffler, Label Fuel, Mark Symbol |
| Label 2 (Rear) | 284-285 | Mark Position, Label ROPS Warning, Label Shuttle, Label Drawbar, Label Safety, Mark Diff.Lock |
| Accessories and Service Parts | 286-287 | Assy Key Main Switch, Nut, Washer, Stud |
| Front Bumper (W/G No.Mx8068) [Option] | 288-289 | Front Bumper, Bumper, Bolt |
| Front Weight [Option] | 290-291 | Weight Front 20KG, Bolt, Nut, Washer |
| Position Control Lever (with Draft) [Option] | 292-293 | Bush, Spring Plate, Gasket, Grip Lever |
| Draft Control Lever (with Draft) [Option] | 294-295 | Bush, Gasket, Spring Plate, Grip Lever |
| Top Link Holder (with Draft) [Option] | 296-297 | Comp Holder Top Link, Nipple Grease, Bush, Nut |
| Point Linkage 1 (Lower Link) [Option] | 298-299 | Spring, Washer, Nut, Pin |
| Point Linkage 2 (Lift Rod) [Option] | 300-301 | Joint Gear Case, Case Lift Rod Gear, Handle Lift Rod, Stopper Handle, Nipple Grease, Pipe |
| Auxiliary Control Valve Lever (1St) [Option] | 302-303 | O Ring, Grip Lever, Bolt, Washer |
| Auxiliary Control Valve Lever (2Nd) [Option] | 304-305 | O Ring, Grip Lever, Bolt, Washer |
| Auxiliary Control Valve Lever (2Nd/Floating Type) [Option] | 306-307 | O Ring, Grip Lever, Bolt, Washer |
| Auxiliary Control Valve Lever (3Rd) [Option] | 308-309 | O Ring, Grip Lever, Bolt, Washer |
| Auxiliary Control Valve Coupler (1St) [Option] | 310-311 | Adapter, O Ring, Assy Coupler Female, Support Coupler, Assy Coupler Male, Cap |
| Auxiliary Control Valve Coupler (2Nd) [Option] | 312-313 | Adapter, O Ring, Assy Coupler Female, Support Coupler, Assy Coupler Male, Cap |
| Auxiliary Control Valve Coupler (3Rd) [Option] | 314-315 | Adapter, O Ring, Assy Coupler Female, Support Coupler, Assy Coupler Male, Cap |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FUSE rating | 5A | p. 101 |
| BATTERY type | 80D26R | p. 83 |
| ASSY BULB power | 1.7W | p. 91 |
| BULB power | 25W | p. 93 |
| BULB LIGHT power | 27W | p. 97 |
| COMP.CRANKCASE Weight | 54.5 kgf | p. 8 |
| COMP.CYLINDER HEAD Weight | 20 kgf | p. 12 |
| CARTRIDGE OIL FILTER Weight | 0.54 kgf | p. 14 |
| COMP.CRANKSHAFT Weight | 16.5 kgf | p. 22 |
| SHIM INJECTION PUMP Thickness | 0.20mm | p. 30 |
| ASSY ALTERNATOR Weight | 3.05 kgf | p. 75 |
| ASSY STARTER Weight | 4.05 kgf | p. 79 |
Kubota L4400DT Common Problems This Manual Covers
Intermittent no-crank, or the engine turns over slowly on cold mornings. p. 78
Inspect the starter assembly in the exploded view on page 78. Check that any replacement matches the 4.05 kgf spec, then cross-reference the starter relay and safety switch part numbers before ordering.
Manual Section: StarterTractor experiences difficult gear engagement or noticeable clutch slip under heavy loads. p. 114
Check the main shaft diagram on page 114 to spot worn transmission parts. Count the main gear shaft teeth against the 22-18-13-10T spec before you order, then pull the part numbers for the clutch release bearing and shift forks.
Manual Section: Main ShaftHeadlights and dashboard warning lights stop working or blow fuses repeatedly during operation. p. 100
Open the electrical parts diagram on page 100 to identify the lighting components. Match the 5A fuses called out for the panel board, then locate the part numbers for the harness sections and relays you need to replace.
Manual Section: Electrical WiringWhite smoke from exhaust and loss of coolant pressure indicating a blown head gasket. p. 11
Find the head gasket and surrounding internal parts in the page 11 diagram. The complete cylinder head assembly weighs 20 kgf, worth knowing for lifting and handling. Match the valve and rocker arm part numbers to your engine block model.
Manual Section: Cylinder HeadFrequently Asked Questions
What are the replacement specifications for clutch?
Clutch components come with listed replacement weights. The ASSY PLATE PRESSURE (Part No. TA020-20600) is 6.5 kgf (14.3 lb), and the COMP.DISK CLUTCH (Part No. TD020-20500) is 1.03 kgf (2.266 lb).
What are the replacement specifications for transmission components?
Transmission parts are listed with their replacement data. The CASE TRANSMISSION (Part No. TC230-20400) shows a quantity of 1, while the STUD (Part No. 01574-61260) weighs 0.05 kgf (0.11 lb) and the BOLT (Part No. 01133-51260) weighs 0.06 kgf (0.132 lb).
Is this Kubota L4400DT Parts Catalog a digital download?
Yes. It's a 315-page searchable PDF you can download right away. It opens on any device, so you can pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print specific sections of this Kubota L4400DT Parts Catalog?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
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