Part of the Kubota Parts Manuals.
Need the factory part numbers for your Kubota L2550DT? This 317-page parts catalog (OEM #12021) breaks down every assembly into exploded views, each component tagged with its OEM number, delivered as a PDF. Engine coverage runs 62 pages, from crankcase and piston assemblies through the injection pump and governor linkage. Drivetrain takes another 100 pages: dual-clutch, single-clutch, PTO counter shafts, and synchro-mesh gear forks. Hydraulic parts fill 48 pages of pumps, control valves, and 3-point linkage; the chassis section adds 40 more for hood, fender, seat, and ROPS hardware. Factory weights pin down what you're holding, with the crankcase listed at 30 kgf and the DC flywheel at 14.43 kgf, so the part on screen matches the part in your hand. No more guessing, no more return freight. Bookmarked throughout, so a keyword search pulls any part number in seconds.
What's Inside This Kubota L2550DT Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Nozzle and Glow Plug, Fuel Camshaft, Injection Pump, Engine Stop Lever, Speed Control Plate 1, Speed Control Plate 2, Governor, Air Cleaner, Double Air Cleaner, Accelerator Lever, Accelerator Linkage, Fuel Tank, Fuel Filter | |
| Cooling System | Water Pump, Water Flange, Fan, Water Pipe, Radiator | |
| Engine | Crankcase, Oil Pan, Piston and Crankshaft, Main Bearing Case, Flywheel, Cylinder Head, Valve and Rocker Arm, Cylinder Head Cover, Inlet Manifold, Camshaft, Gear Case, Exhaust Manifold, Muffler, Under Muffler, Bevel Gear Case, Hydraulic Oil Filter | |
| Electrical System | Dynamo Except, Dynamo, Starter, Battery, Switch and Regulator Except, Light Except, Electrical Wiring, Light Grille Except | |
| Clutch & Transmission | Clutch, Clutch Lever, Clutch Pedal, Clutch Housing, Transmission Case, Main Shaft, Counter Shaft, Counter Shaft 2, PTO Counter Shaft 1, PTO Counter Shaft 2, PTO Counter Shaft, Main and Shuttle Gear Shift Lever, Main Gear Shift Linkage System, Main Gear Shift Fork, Shuttle Gear Shift Fork, Hi-Lo Gear Shift Fork | |
| PTO | PTO Shaft, Mid PTO, PTO Interlock, Main and PTO Change Cover | |
| Rear Axle, Differential & Brakes | Rear Differential, Rear Axle, Rear Wheel, Brake, Brake Pedal | |
| Front Axle & Steering | Spiral Bevel Pinion, Front Axle, Front Axle Case, Front Differential, Propeller Shaft, Front Wheel Drive Case, Front Wheel, Front Wheel Except, Front Axle Frame, Steering Linkage, Steering, Steering Handle | |
| Hydraulics & 3-Point Hitch | Hydraulic Pump, Hydraulic Oil Line, Hydraulic Block, Control Valve, Draft Control Valve, Cylinder Front Cover, Hydraulic Cylinder, Lift Arm, Feed Back Lever, Aux.Control Valve 1, Aux.Control Valve 2, Aux.Control Valve, 3-Point Linkage 1, 3-Point Linkage 2, Top Linkage Bracket, Drawbar Except | |
| Body & Operator Station | Shutter, Front Grille, Front Grille Support, Hood, Side Cover, Rear Hood, Fender, Floor Seat, Seat Except, Foot Cover, Step, ROPS | |
| Decals & Accessories | Label 1 Except, Label 2 Except, Accessories and Service Parts | |
| Other Components | Pre-Cleaner, Stop Rod Except, Panel Except, Panel, Reverse Shaft, Speed Change Interlock, Diff. Lock Pedal, Diff.Gear Shaft, Front Diff.Case, Orchard Kit, Position Lever |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FUSE | 10A | p. 102 |
| Crankcase Weight | 30 kgf | p. 6 |
| Flywheel(DC) Weight | 14.43 kgf | p. 14 |
| Gear Case Weight | 5.1 kgf | p. 30 |
| Injection Pump Weight | 2.2 kgf | p. 38 |
| Dynamo Weight | 3.2 kgf | p. 82 |
| Starter Weight | 3.8 kgf | p. 86 |
| Battery Weight | 14.9 kgf | p. 92 |
| Transmission Case Weight | 32 kgf | p. 118 |
| Main Shaft(DC) Gear Teeth | 22T | p. 120 |
| Counter Shaft [Constant Mesh] Gear Teeth | 42T | p. 124 |
| Spiral Bevel Pinion Shim Thickness | 0.5MM | p. 164 |
Kubota L2550DT Common Problems This Manual Covers
Kubota L2550DT transmission slips under load with heavy grinding noises from the main gear shafts p. 119
Inspect the drivetrain exploded views starting on page 119. Locate the correct part number for the 22T main shaft gear. Check page 123 for the constant mesh counter shaft assembly to verify the part number for the 42T replacement gear.
Manual Section: Main Shaft(Dc)Ignition switch engaged but the electrical system turns over slowly or fails to start completely p. 101
Review the electrical wiring parts list on page 101 to identify part numbers for the 10A and 15A circuit fuses. Examine the starter component breakdown on page 87 to order the correct internal rebuild kit for the 3.8 kgf starter unit.
Manual Section: Electrical Wiring [With Easy Checker] [A]Rear differential makes a heavy grinding noise and locks up during operation in the field p. 163
Cross-reference the spiral bevel pinion parts list on page 163 to find the correct replacement gear numbers. Verify the required 0.5MM shim thickness part numbers on page 164 to set proper gear backlash when rebuilding the rear differential assembly.
Manual Section: Spiral Bevel PinionEngine develops a loud knock and loses oil pressure while operating under a heavy load p. 29
Check the engine parts diagram on page 29 to identify the exact replacement bolts and gaskets for the gear case. Order the correct mounting hardware to safely secure the 5.1 kgf gear case assembly during your complete engine rebuild procedure.
Manual Section: Gear CaseFrequently Asked Questions
Does this Kubota L2550DT Parts Catalog cover the transmission gears if mine slips and grinds under load?
Yes. It includes the drivetrain exploded views starting on page 119, where you can find the part number for the 22T main shaft gear (page 120). For the constant mesh assembly, the counter shaft section gives you the 42T replacement gear part number (page 124).
If my L2550DT cranks slowly or won't start, what electrical parts can I look up here?
Use the electrical wiring parts list on page 101 to identify the circuit fuse part numbers, including the 10A fuse (page 102). For a no-crank condition, the starter component breakdown on page 87 lets you order the correct internal rebuild kit for the starter unit.
My rear differential is grinding and locking up, does this catalog help me rebuild it?
Yes. The spiral bevel pinion parts list on page 163 gives you the correct replacement gear numbers. To set proper gear backlash on reassembly, page 164 lists the part numbers for the required 0.5MM shim thickness.
For an engine knock with low oil pressure on the L2550DT, what does this catalog show?
It includes the engine gear case parts diagram on page 29 so you can identify the exact replacement bolts and gaskets. From there you can order the correct mounting hardware to secure the gear case assembly during an engine rebuild (page 29).
How quickly can I access this manual after buying?
The 317-page searchable PDF downloads the moment your checkout clears. Open it on a laptop, tablet, or phone and carry it straight to the shop floor.
Can I print specific sections of this Kubota L2550DT Parts Catalog?
The PDF ships DRM-free, so print whatever sections you want to carry into the shop. Standard letter or A4 paper handles it fine.
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