This Kubota workshop manual covers the L2250, L2550, L2550 GST, L2850, L2850 GST, and L3250 compact diesel tractors, including the D1302-DI-A, D1402-DI-A, V1702-DI-A, and V1902-DI-A engines. Across 626 pages it walks through the engine, clutch, transmission, hydraulics, steering, brakes, and the full electrical system, plus separate servicing sections for the GST hydraulic shuttle transmission that sets the L2550 GST and L2850 GST apart from the dry-clutch models.
You also get factory torque values, clearances, and step by step disassembly for the front axle, three-point hitch, and mounted implements like the front-end loader, mower, and rotary tiller. Whether you are rebuilding an engine, chasing a charging fault, or resetting clutch free play, this is the same reference a Kubota technician works from. Delivered as an instant PDF download you can read on any device or print for the shop.
What's Inside This Kubota L2250–L3250 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Features | - | Main Shift and Shuttle Levers, Power Steering, Manual Shuttle Transmission, Mid-PTO, Twin Plates Single Stage Clutch, Dual Stage Clutch, ROPS, Position Control |
| Engine | - | Engine Body, Lubricating System, Cooling System, Fuel System, Inlet and Exhaust System |
| Clutch | - | Dry Type, Single Stage Clutch, Dual Stage Clutch |
| Transmission | - | Power Train, Speed Change Linkage Mechanism |
| Rear Axle | - | Differential Gear |
| Brakes | - | Brake Case, Cam Plate, Brake Cam, Brake Cam Lever, Parking Brake Lever, Brake Pedal, Brake Disc, Steel Ball |
| Front Axle | - | Structure, Front Wheel Alignment |
| Steering | - | Steering Linkage, Manual Steering, Power Steering |
| Three Point Hydraulic System | - | Hydraulic Circuit, Linkage Mechanism, Hydraulic Power Take Off |
| Electrical System | - | Wiring Diagram and Electrical Circuit, Starting System, Engine Key Switch Shut-Off System, Charging System, Lighting System, Easy Checker, Gauges |
| Tires | - | Specifications of Implement Limitations |
| General | - | Tractor Identification, General Precaution, Tightening Torques, Maintenance Check List, Check and Maintenance, Special Tools |
| Separation | - | Draining Oil and Coolnat, Removing Steering Gear Box, Separating Front Axle, Separating Engine From Clutch Housing, Separating Engine, Separating Clutch Housing and Mid Case |
| Hydraulic System | - | Three Point Hydraulic Pump, Oil Filter, Position Control Valve, Draft Control Valve, Relief Valve, Cylinder Safety Valve, Lowering Speed Adjusting Valve, Hydraulic Cylinder |
| Front-End Loader | - | Control Valve, Cylinder, Quick Coupler, Boom Cylinder, Bucket Cylinder |
| Mower | - | Suitable Tractor, Exterior View and Appellation, Power Transmission, Lifting Mechanism, Blade, Belt, Blade Boss, Gear Box |
| Rotary Tiller | - | Universal Joint, Blade Shaft, Bevel Pinion Shaft, Bevel Gear, Chain Case, Rotary Support, Bearing Case |
| L2550 Gst | - | Cylinder Block, Fuel System, Governor, Transmission, Shifting Mechanism, Oil Filter Bracket, Modulating Valve, Rotary Valve Assembly |
| L2850Gst | - | Oil Filter Bracket, Rotary Valve, Modulating Valve, Main Shift Valve Assembly, Shuttle Shift Spool Valve, Gate Valve Assembly, Accumulator, Clutch Pack |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cylinder head screws and nuts (Flange type) torque | 93.2 to 98.1 N·m (9.5 to 10.0 kgf·m, 68.7 to 72.3 ft-lbs) | p. 198 |
| Front wheel mounting nut torque | 123.6 to 147.1 N-m (12.6 to 15.0 kgf-m, 91.1 to 108.5 ft-lbs) | p. 323 |
| Rear wheel mounting screw and nut torque | 197 to 225 N-m (20 to 23 kgf-m, 145 to 166 ft-lbs) | p. 323 |
| Clutch Pedal Free play | 20 to 25 mm (0.79 to 0.98 in.) | p. 245 |
| Clutch mounting screw and reamer screw torque (Single Stage Clutch) | 23.5 to 27.5 N·m (2.4 to 2.8 kgf·m, 17.4 to 20.3 ft-lbs) | p. 247 |
| Battery Specific Gravity at 20°C (68°F) (100% Charged) | 1.260 Sp. Gr. | p. 410 |
| Battery 20 ampere-hour rate Reference value | 110 Ah | p. 411 |
| Alternator Brush Length Allowable Limit | 10.0 mm (0.394 in.) | p. 408 |
| L2850GST (4WD) | ||
| GST Relief Valve Set pressure | 3.14 to 3.23 MPa (32.0 to 33.0 kgf/cm², 455 to 469 psi) | p. 601 |
| GST System Pressure Set pressure | 2.35 to 2.45 MPa (24.0 to 25.0 kgf/cm², 341 to 356 psi) | p. 601 |
| Hi-Lo shift spool valve mounting bolt torque | 17.7 N·m (1.8 kgf·m, 13.0 ft-lbs) | p. 602 |
| L2550 GST (4WD) | ||
| Hi-Lo shift spool valve mounting bolt torque | 17.7 N·m (1.8 kgf·m, 13.0 ft-lbs) | p. 551 |
Kubota L2250–L3250 Series Common Problems This Manual Covers
GST shuttle transmission shifts poorly
On L2550 GST and L2850 GST tractors, hard shifting, grinding, or slipping under load usually traces to wear or adjustment in the GST shuttle mechanism. The dedicated GST servicing section gives set pressures and shift valve torques for diagnosis.
Manual Section: L2550 Gst p. 514Clutch drags or tractor creeps
Hard shifting or a tractor that creeps with the pedal held down points to worn clutch discs or incorrect free play. The Clutch section covers both single and dual stage dry clutches with pedal free play and reassembly specs.
Manual Section: Clutch p. 30Battery warning light stays on
A charge light that flickers or stays lit after startup often means low electrolyte or a charging fault. The Electrical System section covers the charging system, easy checker, and alternator brush limits.
Manual Section: Electrical System p. 83Weak or slow three-point lift
Slow, weak, or unresponsive rear hitch lift is usually a hydraulic pressure or wear issue. The Three Point Hydraulic System section details the hydraulic circuit, linkage, and power take off for the lift system.
Manual Section: Three Point Hydraulic System p. 63Hard starting or rough running
Difficult starting, low power, or colored exhaust on these diesels points to fuel, valve clearance, or cooling problems. The Engine section covers the fuel system, lubricating system, and cooling checks.
Manual Section: Engine p. 9Uneven or weak braking
Weak or uneven brakes on these tractors usually need pedal free play adjustment or worn parts replaced. The Brakes section covers servicing of the brake system.
Manual Section: Brakes p. 52Frequently Asked Questions
Which Kubota models does this manual cover?
It covers the Kubota L2250, L2550, L2550 GST, L2850, L2850 GST, and L3250 tractors, including their D1302-DI-A, D1402-DI-A, V1702-DI-A, and V1902-DI-A diesel engines. Both the dry-clutch models and the GST shuttle variants are included.
What are the cylinder head bolt torque specs?
The cylinder head flange screws and nuts torque to 93.2 to 98.1 N.m (68.7 to 72.3 ft-lbs). The engine torque values and valve clearances are found in the Engine section. p. 9
Does it cover the front-end loader and mower?
Yes. Separate sections cover the front-end loader, the mower, and the rotary tiller, with mechanism and servicing for each. The Front-End Loader section starts the mounted-implement coverage. p. 443
How do I check the GST hydraulic pressure?
On the L2850 GST the relief valve is set to 3.14 to 3.23 MPa (455 to 469 psi) and the system pressure to 2.35 to 2.45 MPa (341 to 356 psi). The L2850 GST servicing section walks through checking it. p. 566
What format is this manual in?
This is a 626-page searchable PDF ready for immediate download. Works on any device, pull it up on your phone while you're under the hood. No shipping, no waiting.
Am I able to print pages from this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Are there wiring harness diagrams in this Kubota L2250–L3250 Series manual?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
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