This Kubota LA402 Parts Catalog PDF maps every component of the loader, from the main frame through the accessories. Each of the 42 pages carries exploded views and numbered parts lists across the chassis, brace, boom, control valve (with component-level breakdowns), control lever, cylinders and hydraulic hoses, hydraulic tubes, boom and bucket cylinder internals, hydraulic block, and accessories. Diagrams call out individual part numbers, so you can cross-reference exactly what you need before placing an order. Factory weights anchor the data: the main frame assembly runs 108 kgf (237.6 lb), the boom 93 kgf (204.6 lb), the brace 25 kgf (55 lb). No more ordering the wrong part and waiting a week on a return. Section bookmarks drop you straight onto the hydraulic block or control valve internals, no scrolling. Pull it up on your phone at the machine and order right the first time.
What's Inside This Kubota LA402 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Main Frame | 4-6 | Old Part |
| Brace | 7-8 | Brace Exploded View, Component Overview, Brace Parts List |
| Boom | 9-10 | Boom Exploded View, Component Overview, Boom Parts List |
| Control Valve | 11-16 | Control Valve Exploded View, Component Overview, Control Valve Parts List |
| Control Valve [Component Parts] | 17-22 | Control Valve Component Parts Exploded View, Component Overview, Control Valve Component Parts Parts List |
| Control Lever | 23-26 | Control Lever Exploded View, Component Overview, Control Lever Parts List |
| Cylinder/Hydraulic Hose | 27-28 | Cylinder Hydraulic Hose Exploded View, Component Overview, Cylinder Hydraulic Hose Parts List |
| Hydraulic Hose(Hyd.Outlet Block) | 29-30 | Hydraulic Hose Hyd Outlet Block Exploded View, Component Overview, Hydraulic Hose Hyd Outlet Block Parts List |
| Hydraulic Tube | 31-32 | Hydraulic Tube Exploded View, Component Overview, Hydraulic Tube Parts List |
| Cylinder (Boom)[Component Parts] | 33-34 | Cylinder Boom Component Parts Exploded View, Component Overview, Cylinder Boom Component Parts Parts List |
| Cylinder (Bucket)[Component Parts] | 35-36 | Cylinder Bucket Component Parts Exploded View, Component Overview, Cylinder Bucket Component Parts Parts List |
| Hydraulic Block | 37-40 | Hydraulic Block Exploded View, Component Overview, Hydraulic Block Parts List |
| Accessories and Service Parts | 41-42 | Accessories And Service Parts Exploded View, Component Overview, Accessories And Service Parts Parts List |
Every system also includes component overview.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| MAIN FRAME (LABEL) | 108 kgf (237.6 lb) | p. 6 |
| BRACE | 25 kgf (55 lb) | p. 8 |
| BOOM | 93 kgf (204.6 lb) | p. 10 |
| EDGE CUTTING | 13 kgf (28.6 lb) | p. 10 |
| VALVE CONTROL (3 POSITION) | 6.2 kgf (13.64 lb) | p. 12 |
| VALVE CONTROL (4 POSITION) | 12 kgf (26.4 lb) | p. 14 |
| LEVER CONTROL | 0.55 kgf (1.21 lb) | p. 24 |
| CYLINDER 1 | 10 kgf (22 lb) | p. 28 |
| HOSE 1 HYDRAULIC | 0.36 kgf (0.792 lb) | p. 30 |
| TUBE 1 HYDRAULIC | 0.75 kgf (1.65 lb) | p. 32 |
| HYDRAULIC BLOCK (S.No.;<=29999) | 0.3 kgf (0.66 lb) | p. 38 |
Kubota LA402 Common Problems This Manual Covers
The LA402 loader raises and lowers intermittently, so you need the correct control valve replacement part number p. 11
Inspect the exploded view on page 11 to identify the specific valve body and spool components. Check whether you need the VALVE CONTROL (3 POSITION) assembly, listed at 6.2 kgf (13.64 lb) on page 12. Cross-reference the part number against your machine serial number before ordering.
Manual Section: Control ValveCannot find the specific boom cylinder rebuild seal kit numbers when the loader drifts down under heavy load p. 33
Open the boom cylinder component breakdown on page 33 for the internal packing and seal kit part numbers. The complete CYLINDER 1 assembly weight reads 10 kgf (22 lb) on page 28. Match the seal kit part number to the stamp on your exact cylinder housing.
Manual Section: Cylinder (Boom)[Component Parts]Weak bucket response has you hunting the exact replacement part numbers for the outlet block hydraulic hoses p. 29
Trace the hydraulic outlet block hose routing on page 29 to find the correct hose part numbers. HOSE 1 HYDRAULIC weighs 0.36 kgf (0.792 lb) per page 30. Order the matching fittings and O-rings from the same component group so the connections seal properly.
Manual Section: Hydraulic Hose(Hyd.Outlet Block)Sloppy joystick movement points to worn control lever linkage pins and bushings, and you need their correct part numbers p. 23
Pull up the control lever parts diagram on page 23 to locate the worn linkage bushings, pins, and joint components. Reference the LEVER CONTROL assembly, listed at 0.55 kgf (1.21 lb) on page 24. Replace every associated snap ring when you fit the new pins.
Manual Section: Control LeverFrequently Asked Questions
What are the replacement specifications for control valve?
The right control valve depends on serial number and valve type. For S.No. <=29999 [3 POSITION VALVE TYPE], use Part No. 7J040-61010, which weighs 6.2 kgf (13.64 lb). For S.No. <=29999 [4 POSITION VALVE TYPE], use Part No. 7J040-71010 at 12 kgf (26.4 lb). For S.No. >=50001 [4 POSITION VALVE TYPE], the ASSY VALVE CONTROL is Part No. YW244-00100 at 6.7 kgf (14.74 lb).
What are the replacement specifications for hydraulic hoses?
Hydraulic hose specs run by part number. HOSE 8 HYDRAULIC (Part No. 75535-66610) weighs 0.34 kgf (0.748 lb), HOSE 1 HYDRAULIC (Part No. 7J040-66110) 0.36 kgf (0.792 lb), and HOSE 5 HYDRAULIC (Part No. 75536-66310) 0.4 kgf (0.88 lb). Others include HOSE 9 HYDRAULIC (Part No. 75535-66620) at 0.42 kgf (0.924 lb) and HOSE 7 HYDRAULIC (Part No. 7J040-66510) at 0.62 kgf (1.364 lb).
What do I get after purchasing this Kubota LA402 manual?
Immediate download of the full 42-page searchable parts catalog. Open it on any device: the laptop at your desk or your phone out in the field.
Are there any print restrictions on this Kubota LA402 manual?
No restrictions. There's no DRM or copy protection, so print the whole manual or only the pages you need. Any home or office printer handles it.
Document Quality
This is a scanned document with an OCR layer, allowing you to search and copy the full text content. The text quality is consistently crisp and easy to read throughout the document. Diagrams are clear line drawings, and their labels are generally readable, though they appear to be raster images rather than vector. The pages are clean, free from scan artifacts, stains, or skewed content. All pages contain relevant information, with no notable blank or filler pages present.
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