Part of the Kubota Parts Manuals.
This is the factory parts catalog for the Kubota L4400H compact tractor, a 312 page illustrated PDF built around exploded diagrams and matching part number lists. Every assembly is drawn out and numbered, then cross referenced to Kubota part numbers, quantities, serial number ranges, and interchangeability notes.Coverage runs from the engine (crankcase, cylinder head, gear case, piston and crankshaft) through the fuel and cooling systems, the radiator and water pump, and the electrical system with alternator, starter, battery, switches, and sensors. The catalog opens with instructions on reading the column headings and the serial number and country codes.Owners, independent mechanics, and restorers of these 2002 to 2009 tractors use it to identify the exact replacement part, confirm it suits their serial range, and order the right piece instead of guessing. Delivered as an instant PDF download you can search on any device or print the pages you need for the shop.
What's Inside This Kubota L4400H Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Clutch & Transmission | Clutch, Clutch Lever, Clutch Pedal, Clutch Housing, HST, Mid Case, Transmission Case, Countershaft, Range Gear Shaft, PTO Countershaft, PTO Clutch, Range Gear Shift Fork, Differential Lock Shift Fork, Neutral Holder Link, Range Gear Shift Lever, PTO Clutch Control Lever | |
| Fuel System | Fuel Camshaft, Engine Stop Lever, Injection Pump, Governor, Speed Control Plate, Nozzle Holder and Glow Plug, Nozzle Holder, Air Cleaner, Accelerator Lever, Fuel Tank, Fuel Pipe and Fuel Filter, Fuel Filter, Speed Control Pedal | |
| Cooling System | Water Flange and Thermostat, Water Pump, Fan, Water Pipe, Radiator, Reserve Tank, Oil Cooler | |
| Engine | Crankcase, Oil Pan, Cylinder Head, Gear Case, Head Cover, Main Bearing Case, Camshaft and Idle Gear Shaft, Piston and Crankshaft, Flywheel, Valve and Rocker Arm, Inlet Manifold, Exhaust Manifold/Muffler, Upper Gasket Kit, Lower Gasket Kit | |
| Electrical System | Alternator, Starter, Battery, Switch 1/Relay, Switch 2/Sensor, Panel Board, Head Light, Hazard Light, Rear Lamp, Electrical Wiring, Working Light Kit | |
| Undercarriage & Travel | Steering Controller | |
| PTO | PTO Drive Shaft, PTO Shaft, PTO Hydraulic Oil Line, PTO Protector | |
| Rear Axle, Differential & Brakes | Spiral Bevel Pinion, Rear Differential, Rear Axle LH, Rear Axle RH, Brake LH, Brake RH, Brake Rod 1, Brake Rod 2, Brake Pedal, Front Axle Case LH, Front Axle Case RH, Differential Gear Shaft, Rear Wheel, Rear Wheel Weight | |
| Front Axle & Steering | Front Wheel Drive Lever, Front Axle Frame, Propeller Shaft, Front Wheel Drive Shaft, Front Differential Case, Front Axle, Steering Handle, Steering Support, Tie Rod/Steering Cylinder, Steering Cylinder, Front Wheel | |
| Hydraulics & 3-Point Hitch | Hydraulic Pump, Hydraulic Oil Line, Hydraulic Outlet Block, Hydraulic Cylinder, Lift Arm, Feed Back Lever, Control Valve, Position Control Lever, Top Link, 3-Point Linkage 1, 3-Point Linkage 2, Drawbar, Draft Control Lever, Top Link Holder, Swinging Drawbar/Clevis Drawbar, Auxiliary Control Valve | |
| Body & Operator Station | Cruise Control Cable, Front Grille, Hood Front Support, Hood, Hood Side, Hood Side Cover, Shutter Plate, Hood Rear, Fender, Fender Support, Floor Sheet Cover, Seat, Step, Smv Emblem, ROPS | |
| Decals & Accessories | Tool Box, Label 1, Label 2, Accessories and Service Parts | |
| Other Components | Cruise Control Lever, Bevel Gear, Differential, Front Bumper, Front Weight |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder Head Gasket Thickness (Max) | 1.35mm | p. 8 |
| Piston Oversize Option | +0.25mm | p. 18 |
| Crankpin Undersize Option | -0.40mm/SET | p. 18 |
| Injection Pump Shim Thickness (Min) | 0.175mm | p. 28 |
| Nozzle Holder Washer Adjusting Thickness (Example) | 0.900mm | p. 35 |
| Battery Type | 80D26R | p. 74 |
| Headlight Bulb Wattage | 25W | p. 84 |
| Hazard Light Bulb Wattage | 23W | p. 86 |
| Rear Lamp Bulb Wattage (Dual Filament) | 23/8W | p. 87 |
| Fuse Rating (Example) | 5A | p. 89 |
| HST Servo Regulator Shim Thickness (Max) | 0.5mm | p. 107 |
| HST Input Gear Teeth Count | 23T | p. 112 |
Kubota L4400H Common Problems This Manual Covers
Hard starting or stalling
Hard starts after sitting, or a start that dies shortly after, are commonly tied to a clogged fuel filter or air in the lines. The Fuel Pipe and Fuel Filter section lists the filter assembly, tubes, and clamps to renew.
Manual Section: Fuel Pipe and Fuel Filter p. 57Overheating under load
A plugged or damaged radiator makes the engine run hot during heavy work. The Radiator section identifies the radiator assembly, fan shroud, cap, and drain plug for repair.
Manual Section: Radiator p. 63Slow crank or no crank
A starter that clicks or cranks slowly with good battery voltage usually has a worn starter or solenoid. The Starter component parts section breaks down the yoke, armature, and magnetic switch.
Manual Section: Starter [Component Parts] p. 72Weak charging or flat battery
A battery that keeps going flat often means a worn alternator or failed regulator. The Alternator component parts section identifies the alternator, pulley, rectifier, and regulator.
Manual Section: Alternator [Component Parts] p. 69Oil leaks around the crankcase
Worn plugs, caps, and sealing hardware in the crankcase lead to seepage over the hours. The Crankcase diagram and parts list identify the plugs, sealing caps, and pump-related parts to reseal it.
Manual Section: Crankcase p. 3Coolant leak at the water pump
A weeping water pump points to a worn mechanical seal or bearing. The Water Pump section provides the pump body, bearing, impeller, and seal so you can rebuild or replace it.
Manual Section: Water Pump p. 40Frequently Asked Questions
What machine does this parts catalog cover?
It covers the Kubota L4400H compact tractor. Assemblies from the engine through the fuel, cooling, and electrical systems are diagrammed and listed by Kubota part number.
Does it include Kubota part numbers and serial ranges?
Yes. Each diagram is backed by a parts list showing the reference number, part number, part name, quantity, serial number range, and interchangeability, as explained in the opening instructions. p. 1
Does it cover the engine assemblies?
Yes. The engine group starts with the Crankcase and continues through the cylinder head, gear case, piston and crankshaft, and related parts, each with its own diagram and numbered list. p. 3
What battery does the L4400H use?
The Battery section lists the battery type as 80D26R, along with the cords, retainer, and support hardware you need when replacing it. p. 74
How will I receive this Kubota L4400H Parts Catalog?
A 312-page Parts Catalog in searchable PDF, ready the moment your checkout clears. Read it on a computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
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