Factory-correct service for nine Kubota tractors in one 63-page file: the L185, L235, L245, L275, L285, L295, L305, L345, and L355. Wiring coverage runs four pages with full circuit routing. Hydraulic schematics map pump circuits, relief valve assemblies, and pressure test port locations. Exploded views cover every major drivetrain and hydraulic assembly, keyed to part callouts. Torque values sit right in the procedure text with model-specific callouts, so the figure for your machine is never in doubt: cylinder head cap screws at 73.5-78.4 Nm (55-58 ft.-lbs.), connecting rod caps at 37-41 N.m (27-30 ft.-lbs.) before you close the block. Bookmarked by section and fully searchable, the L185 through L355 reference pulls the number you need on any device.
What's Inside This Kubota L185–L355 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Condensed Service Data | 3-4 | General (Engine Make, Number Of Cylinders, Bore, Stroke, Displacement, Cylinder Sleeves, Battery-Volts, Ground Polarity, Forward Speeds) |
| Front System (Two-Wheel Drive) | 5 | Front Axle (All Models So Equipped), Tie Rods And Toe-In (All Models So Equipped), Steering Spindle And Wheel Hub (All Models So Equipped) |
| Front-Wheel Drive | 6-10 | All Models So Equipped, Tie Rods And Toe-In (All Models So Equipped), Front Drive Axle (All Models So Equipped), Outer Drive Assembly (All Models So Equipped) |
| Steering System | 11-13 | Manual Steering (All Models So Equipped), Power Steering (Integral Type), Steering Pump (All Models So Equipped, Models L235, L275 And L305, Models L345 And L355) |
| Engine and Components | 14-33 | R&R Engine (All Models), Cylinder Head (All Models), Compression Release (All Models), Valves And Seats (All Models), Valve Guides (All Models), Valve Springs (All Models) |
| Diesel Fuel System | 34-36 | All Models, Fuel Filter (All Models), Injection Pump (All Models), Governor Linkage Adjustment, Governor And Fuel Camshaft, Injector Nozzles (All Models), Overhaul |
| Cooling System | 37-40 | All Models, Radiator (All Models), Thermostat (All Models Except L185), Water Pump (All Models Except L185), Fan Shaft (Model L185) |
| Electrical System | 41-46 | Alternator And Regulator (All Models), Overhaul, Starter Motor And Magnetic Switch (All Models) |
| Clutch | 47-49 | Adjustment (All Models), Remove And Reinstall (All Models), Overhaul (Single Plate Clutch), Dual Plate Clutch, Shifter Rails And Forks (Models L185-L245-L285-L295) |
| Transmission | 50-52 | Models L235-L275-L355, Shifter Rails And Forks (Models L235-L275, Model L355), Front Transmission (Models L235-L275), Model L355 (Remove And Reinstall), Overhaul |
| Shuttle Transmission (Model L355) | 53-54 | Shuttle Control Valve (Test And Adjust, R&R And Overhaul, Location Of Hydraulic Pressure Test Ports), Model L355 (Remove And Reinstall) |
| Differential and Bevel Gears | 55-56 | All Models (Remove And Reinstall), Models L185-L235-L245-L275-L285 (Overhaul), Models L295-L305-L345-L355 (Overhaul), Differential Lock (All Models, Remove And Reinstall) |
| Final Drive | 57 | All Models (Remove And Reinstall), Models L185-L245 (Overhaul), Model L285 (Overhaul), Models L235-L275 (Overhaul), Models L295-L305-L345-L355 (Overhaul) |
| Brakes | 58-59 | Adjustment (All Models), R&R And Overhaul (All Models Except L285), Model L285 |
| Power Take-Off | 60 | Models L185-L245-L285-L295 (Remove And Reinstall, Overrunning Clutch), Models L235-L275 (Remove And Reinstall, Models L305-L345 (Remove And Reinstall) |
| Hydraulic System | 61-63 | Fluid And Filter (Exploded View: Hydraulic Filter On Models L185 And L245, Filter Used On Models L235 And L275), Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cylinder head cap screws torque | 73.5-78.4 Nm (55-58 ft.-lbs.) | p. 15 |
| Connecting rod cap screws torque | 37-41 N.m (27-30 ft.-lbs.) | p. 21 |
| Flywheel retaining cap screws torque | 98-108 N.m (73-80 ft.-lbs.) | p. 23 |
| Fuel filter replacement interval | 400 hours of operation or once a year | p. 24 |
| Compression Pressure | 3235 kPa (470 psi) | p. 3 |
| Valve Clearance (Intake and Exhaust) | 0.18-0.22 mm (0.007-0.009 in.) | p. 3 |
| Injection Pressure | 13720-14700 kPa (1990-2135 psi) | p. 3 |
| L235, L275 | ||
| Axle nut (Final Drive Overhaul) | 196-245 N.m (145-180 ft.-lbs.) | p. 51 |
| L185, L245 | ||
| Axle nut (Final Drive Overhaul) | 150-195 N.m (110-145 ft.-lbs.) | p. 50 |
| L285 | ||
| Axle nut (Final Drive Overhaul) | 195-245 Nm (145-180 ft.-lbs.) | p. 51 |
| L295, L305, L345, L355 | ||
| Axle nut (Final Drive Overhaul) | 245-295 Nm (180-215 ft.-lbs.) | p. 51 |
| L355 | ||
| Axle housing mounting cap screws/stud nuts (Final Drive) | 105-115 Nm (75-85 ft.-lbs.) | p. 49 |
Kubota L185–L355 Series Common Problems This Manual Covers
Kubota L185 engine cranks but will not start or starts only with repeated priming after sitting. p. 34
Inspect the fuel filter and lines for air leaks. Bleed the system and verify injection pressure reaches 13720-14700 kPa (1990-2135 psi) as specified on page 3. Replace the fuel filter if it has exceeded the 400 hours of operation or once a year interval found on page 24.
Manual Section: Diesel Fuel SystemThree-point hitch will not lift a load fully, or implement response turns erratic during operation. p. 54
Check the troubleshooting steps on page 54 for hydraulic lift failure. Drain the fluid and clean the suction strainer, then refill and verify pump discharge pressure. Confirm the low idle speed sits at 800-850 rpm (page 3) before testing the hitch under load.
Manual Section: Hydraulic SystemTractor pulls to one side during transport, with weak or uneven braking power. p. 58
Adjust the linkage so brake pedal free travel measures exactly 30 mm (1-3/16 inches), per page 58. Inspect the brake shoes for contamination or uneven wear. Remove the drums and clean all friction surfaces before reassembly and testing pedal engagement.
Manual Section: BrakesEngine overheats under heavy load and loses coolant with noticeable power drop at operating temperature. p. 15
Test the cooling system for leaks and check the cylinder head for distortion. Reinstall the head and tighten the cylinder head cap screws to 73.5-78.4 Nm (55-58 ft.-lbs.) following the sequence on page 15. Verify valve clearance falls within 0.18-0.22 mm (0.007-0.009 in.) from page 3.
Manual Section: Engine and ComponentsFrequently Asked Questions
What are the torque specs for the cylinder head bolts on a Kubota L305?
On all models, including the Kubota L305, torque the cylinder head bolts to 73.5-78.4 N·m (55-58 ft.-lbs.). Tighten the nuts and cap screws evenly in three stages using the sequence in Fig. 45, then retorque after roughly 30 minutes of engine operation.
What are the replacement specifications for fuel filter?
Renew the fuel filter every 400 hours of operation or once a year, whichever comes first. Replace it right away if you discover water contamination, and do the same if you notice a drop in engine power.
What is the valve clearance for these Kubota L185–L355 series engines?
Set both intake and exhaust valve clearance to 0.18-0.22 mm (0.007-0.009 in.) on all models (page 3). This is the same spec across the whole L185 through L355 range covered by the manual.
My Kubota tractor pulls to one side and braking feels weak — how do I fix it?
Adjust the linkage so the brake pedal free travel measures exactly 30 mm (1-3/16 inches), following the procedure on page 58. Then inspect the brake shoes for contamination or uneven wear, and remove the drums to clean all friction surfaces before reassembly and testing pedal engagement.
The three-point hitch won't lift a load fully — what does the manual say to check?
Work through the hydraulic lift troubleshooting steps on page 54. Drain the fluid and clean the suction strainer, then refill and verify pump discharge pressure. Also confirm the low idle speed sits at 800-850 rpm (page 3) before testing the hitch under load.
My engine cranks but won't start after sitting — how do I diagnose it?
Inspect the fuel filter and lines for air leaks, then bleed the system and verify injection pressure reaches 13720-14700 kPa (1990-2135 psi) as specified on page 3. Replace the fuel filter if it has exceeded its 400-hour or once-a-year interval (page 24). The diesel fuel system procedures for this start on page 34.
Is this Kubota L185–L355 Series Shop Manual a digital download?
It's a 63-page searchable PDF, available to download the moment you check out. Open it on a laptop, tablet, or phone and take it straight to the shop floor.
Can I print specific sections of this Kubota L185–L355 Series Shop Manual?
Yes. The PDF carries no DRM restrictions, so you can print any page or section you need. It works with any standard printer.
Can I find wiring schematics in this Kubota L185–L355 Series manual?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
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