Part of the Kubota Parts Manuals.
This is the Kubota LA350 front loader parts catalog, a 21 page illustrated PDF that breaks the loader down into its exact factory assemblies. It covers the main frame, boom, hydraulic oil pressure circuits, the control valve, and the boom and bucket cylinders, with the left and right bucket cylinder groups listed separately.Every section pairs an exploded diagram with a numbered parts list showing Kubota part numbers, quantities, and component weights. You can trace a reference number on the drawing straight to the correct part before ordering, which matters on a loader split into many small serviceable pieces.Use it to identify seal kits, hoses, fittings, pins, and bushings for jobs like cylinder rebuilds, hydraulic leak repairs, and frame hardware replacement. The catalog also lists the optional front guard parts and general accessories and service parts.
What's Inside This Kubota LA350 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Main Frame | 3-4 | Sub Frame, Bracket LH, Bracket RH, Hex.bolt, Hex.nut, Housing Connector, Spacer, Side LH Frame |
| Boom | 5-6 | Brace LH Support, Brace RH Support, Hex.bolt, Hex.nut, Brace, Spring Plate, Eye Mark |
| Oil Pressure (1) | 7-8 | Hydraulic Tube, Hex.bolt, Control Valve, Hex.nut, Assy Adapter, Adjustabl Assy Elbow, Adjustable Elbow, Cylinder |
| Control Valve [Component Parts] | 9-10 | Control Valve, Kit Detent Float, Kit Regenerative, Assy Relief, Kit Load Check, Kit Seal |
| Cylinder 1 (Boom) [Component Parts] | 11-12 | Cylinder, Tube Comp, Rod Comp, Head, Piston, Seal Kit, Grease Fitting |
| Cylinder 2 (Bucket) LH [Component Parts] | 13-14 | Cylinder LH, Tube Comp LH, Rod Comp, Head, Piston, Seal Kit, Grease Fitting |
| Cylinder 2 (Bucket) RH [Component Parts] | 15-16 | Cylinder RH, Tube Comp RH, Rod Comp, Head, Piston, Seal Kit, Grease Fitting |
| Oil Pressure (2) | 17-18 | Lever, Grease Fitting, Lever Grip, Spool, Link, Guide Plate, Hex.bolt, Hex.nut |
| Front Guard [Option] | 19-21 | Front Kit Guard, Collar, Hex.bolt, Assembly Manual |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Part Number for KIT 1, SEAL | 75540-63400 | p. 12 |
| Part Number for KIT 2, SEAL (LH) | 75540-64400 | p. 14 |
| Part Number for HOSE 1,HYDRAULIC | 75530-66110 | p. 8 |
| Part Number for BUSHING | 75530-56640 | p. 4 |
| Part Number for HEX.BOLT (M12*1.25*30) | 01073-51230 | p. 4 |
| Part Number for BOLT, MOUNTING | 75540-57610 | p. 6 |
Kubota LA350 Common Problems This Manual Covers
Boom drifts down under load
The loader arms slowly settle instead of holding position, usually from internal wear or seal leakage in the boom cylinder. The seal kit and cylinder components are listed as replaceable parts.
Manual Section: Cylinder 1 (Boom) [Component Parts] p. 11Boom raises slowly or jerks
Weak or uneven lift often traces to a restricted or leaking hydraulic line feeding the boom circuit. The hydraulic tubes and hoses in this circuit are itemized with their part numbers.
Manual Section: Oil Pressure (1) p. 7Weak or uneven bucket curl
The bucket fails to curl or dump evenly when a bucket cylinder loses pressure through worn seals. Left and right bucket cylinders break down into rod, head, piston, and seal parts.
Manual Section: Cylinder 2 (Bucket) Lh [Component Parts] p. 13Bucket cylinder seal leak
Oil weeping past a bucket cylinder seal causes soft or fading curl on one side. The right bucket cylinder assembly is broken out so you can order just the seal kit rather than the whole unit.
Manual Section: Cylinder 2 (Bucket) Rh [Component Parts] p. 15Play or rattle in loader frame
Excessive movement at the mount points comes from worn pins, bushings, or loose mounting hardware in the main frame. The sub frame, brackets, bushing, and spring pin are listed as individual parts.
Manual Section: Main Frame p. 3Control valve will not hold
Poor lift or drop control can point to a worn detent, regenerative, or load check component inside the control valve. Each of these kits is broken out for individual replacement.
Manual Section: Control Valve [Component Parts] p. 9Frequently Asked Questions
Which machine does this parts catalog cover?
It covers the Kubota LA350 front loader. The catalog is organized by loader assembly (main frame, boom, hydraulics, control valve, and the boom and bucket cylinders) with exploded diagrams and Kubota part numbers throughout.
Can I find the boom cylinder seal kit part number?
Yes. The Cylinder 1 (Boom) section breaks the boom cylinder into its tube, rod, head, piston, and seal components with Kubota part numbers, so you can order the correct seal kit for a rebuild. p. 11
Does it show the hydraulic control valve components?
Yes. The Control Valve component parts section lists the control valve, detent float kit, regenerative kit, relief assembly, and load check kit separately, each with its own part number. p. 9
Are the optional front guard parts included?
Yes. The Front Guard option section lists the guard kit, front guard, collar, and mounting bolts, so you can identify and order the front guard hardware if your loader is fitted with it. p. 19
What do I get after purchasing this Kubota LA350 manual?
After checkout you'll download a 21-page searchable PDF right away. It opens on a laptop, tablet, or phone, so you can carry it straight onto the shop floor.
Are there any print restrictions on this manual?
The PDF ships DRM-free, so print whatever sections you want for the shop. Standard letter or A4 paper handles it.
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