Part of the Kubota Parts Manuals.
This is the factory Kubota LA403 Parts Catalog, a 36-page PDF you can download and print. It covers the LA403 front loader that mounts on Kubota compact tractors, listing every serviceable part across the loader's main frame, side frame, boom, control valve, control lever, and hydraulic system. Each section pairs an exploded diagram with a numbered parts list, so you can match a component to its exact Kubota part number, quantity, and serial-number range before you order.
Use it to identify replacement hoses, tubes, cylinders, seal kits, couplers, and mounting hardware, or to rebuild the control valve and the boom and bucket cylinders. The catalog also flags country-specific and serial-break variations, which matters when one reference number carries more than one part number. Whether you are chasing a leak, rebuilding a cylinder, or ordering wear parts, this manual gives you the numbers you need.
Complete the set for your LA403
- Repair Manual: Kubota LA403 Front Loader Workshop Manual
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Main Frame | 4-5 | Label Danger French, Label Caution French, Bolt, Washer |
| Side Frame | 6-7 | Label Danger French, Label Warning French, Label Lubricate English, Label Lubricate Fren French |
| Boom | 8-9 | Fitting Grease, Label Kubota, Label Leveler, Label Leveler French French, Fitting Grease -28T.T |
| Control Valve | 10-11 | Assy Adapter, Assy Elbow Adjustabl, Throttle, Nipple |
| Control Valve [R/V] | 12-13 | |
| Control Valve [Component Parts] | 14-15 | O Ring, Ring Back Up, Seat Relief Valve, Spring Relief |
| Control Lever | 16-17 | Bush, Joint Rod End, Grip Lever, Bolt |
| Control Lever [R/V] | 18-20 | Assy Cable, Cable 1250MM, Rubber Bellows, Bolt |
| Cylinder/Hydraulic Hose | 21-22 | Cylinder 1, Cylinder 2, Hose 8 Hydraulic, Hose 9 Hydraulic, Band Code |
| Hydraulic Hose(Hyd.Outlet Block) | 23-24 | Hose 1 Hydraulic, Hose 2 Hydraulic, Coupler, Plug Dust, Sleeve |
| Hydraulic Tube | 25-26 | Tube 1 Hydraulic, Tube 2 Hydraulic, Tube 3 Hydraulic, Tube 4 Hydraulic, Cover Clamp, Clamp 3 |
| Cylinder (Boom)[Component Parts] | 27-28 | Tube 1 Comp., Rod 1 Comp., Head 1, Piston 1, Kit 1 Seal |
| Cylinder (Bucket)[Component Parts] | 29-30 | Tube 2 Comp., Rod 2 Comp., Head 2, Piston 2, Kit 2 Seal |
| Hydraulic Block | 31-34 | Elbow, Adapter, Band Code, Block Hydraulic, O Ring, Sleeve |
| Accessories and Service Parts | 35-36 | Operator'S Manual, Operators Manual Fr, Manual Supplement |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Nut thread size | 5/16-24UNF | p. 17 |
| HEX.Bolt thread size | M6*1.00*55 | p. 17 |
| Shim thickness | 0.1mm | p. 15 |
| Cable length | 1250mm | p. 20 |
| Fitting Grease thread size | 1/4-28T.T. | p. 9 |
