Every part number on your LA350 loader lives in these 21 pages, pulled straight from the factory parts index instead of a forum guess. Nine pages itemize the main frame, boom assembly, and hydraulic circuit; another six break down the oil-pressure side tube by tube, hose by hose, fitting by fitting. Exploded views walk both boom and bucket cylinders, the control valve kits (detent float, regenerative, and load check), and the optional front guard section. Chasing the boom cylinder seal kit? It's 75540-63400, quantity 2. The bucket seal kit LH is 75540-64400, and hydraulic hose 1 crosses as 75530-66110. No more cross-referencing outdated catalogs to land on the wrong number. The file is bookmarked by system and searchable by keyword, so you can open it on your phone, locate the part, and place the order.
What's Inside This Kubota LA350 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Main Frame | 3-4 | Sub Frame, Bracket Lh, Bracket Rh, Hex.Bolt, Washer, Spring Lock |
| Boom | 5-6 | Support Brace, Hex.Bolt, Hex.Nut, Washer Spring Lock, Brace, Plate Spring, Mark Eye, Bolt Mounting |
| Oil Pressure (1) | 7-8 | Tube 1, Hydraulic, Tube 2, Tube 3, Tube 4 |
| Control Valve [Component Parts] | 9-10 | Valve, Control, Kit Detent Float, Kit Regenerative, Assy Relief, Kit Load Check |
| Cylinder 1 (Boom) [Component Parts] | 11-12 | Tube 1 Comp, Rod 1 Comp, Head 1, Piston |
| Cylinder 2 (Bucket) Lh [Component Parts] | 13-14 | Tube 2 Comp Lh, Rod 2 Comp, Head 2, Piston |
| Cylinder 2 (Bucket) Rh [Component Parts] | 15-16 | Tube 2 Comp Rh, Rod 2 Comp, Head 2, Piston |
| Oil Pressure (2) | 17-18 | Lever, Washer, Plain, Cir-Clip, External, Fitting, Grease, Grip |
| Front Guard [Option] | 19-21 | Kit Guard, Front, Guard, Collar, Hex.Bolt, Accessories and Service Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Part Number for KIT 1, SEAL | 75540-63400 | p. 12 |
| Quantity for KIT 1, SEAL | 2 | p. 12 |
| Part Number for KIT 2, SEAL (LH) | 75540-64400 | p. 14 |
| Quantity for KIT 2, SEAL (LH) | 1 | p. 14 |
| Part Number for HOSE 1,HYDRAULIC | 75530-66110 | p. 8 |
| Quantity for HOSE 1,HYDRAULIC | 4 | p. 8 |
| Part Number for BUSHING | 75530-56640 | p. 4 |
| Quantity for BUSHING | 1 | p. 4 |
| Part Number for HEX.BOLT (M12*1.25*30) | 01073-51230 | p. 4 |
| Quantity for HEX.BOLT (M12*1.25*30) | 6 | p. 4 |
| Part Number for BOLT, MOUNTING | 75540-57610 | p. 6 |
| Quantity for BOLT, MOUNTING | 2 | p. 6 |
Kubota LA350 Common Problems This Manual Covers
Need to find the correct boom cylinder seal kit part numbers for a Kubota LA350 that raises slowly. p. 12
Open the boom cylinder exploded view on page 12 and order two seal kits under part number 75540-63400. The boom mounting bolts on page 6 take the heavier spring lock washers at 0.08 kgf (0.176 lb), so confirm those while you're in there. Swap out any scored piston or rod assembly the diagram shows.
Manual Section: Cylinder 1 (Boom) [Component Parts]Cannot locate the right left-hand bucket cylinder rebuild components after the bucket curl fails to respond. p. 14
Pull up the left-hand bucket cylinder diagram on page 14, locate KIT 2, SEAL (LH), and order a single kit under part number 75540-64400. The main frame hardware on page 4 calls for M12x1.25x30 bolts if you need those too. Replace the rod and head pieces separately when the hard parts look damaged.
Manual Section: Cylinder 2 (Bucket) Lh [Component Parts]Trying to match replacement loader hydraulic lines because the main pressure hoses are leaking fluid. p. 8
Match the leaking line against the oil pressure diagram on page 8, then order part number 75530-66110 for the HOSE 1, HYDRAULIC. Page 18 lists the plain 5/16 washers at 0.002 kgf (0.0044 lb); verify your linkages still carry the right factory hardware.
Manual Section: Oil Pressure (1)Need the exact bolt and washer specs to replace missing hardware after loader frame rattling. p. 4
Check the main frame parts list on page 4. Locate the M12x1.25x30 hex bolt under part number 01073-51230. Keep in mind each bolt weighs exactly 0.041 kgf (0.0902 lb). Order six bolts and matching spring lock washers to properly secure the sub frame brackets and eliminate rattling.
Manual Section: Main FrameFrequently Asked Questions
What are the replacement specifications for Boom cylinder seal kits / boom cylinder components?
The Boom cylinder's replacement seal kit is Part No. 75540-63400, listed in the catalog as "KIT 1, SEAL". This part falls under the CYLINDER 1 (BOOM) assembly.
What are the replacement specifications for Bucket cylinder seal kits / bucket cylinder components?
One part number covers both bucket cylinders: the LH and RH seal kits are each Part No. 75540-64400, designated "KIT 2, SEAL". It serves the CYLINDER 2 (BUCKET) LH and CYLINDER 2 (BUCKET) RH assemblies alike.
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 Kubota LA350 manual?
None at all. The PDF ships DRM-free, so print whatever sections you want for the shop. Standard letter or A4 paper handles it.
Document Quality
This document is a scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy the full text. The text is consistently crisp and easy to read across all pages. Diagrams and illustrations are raster images, but they are clear with all labels remaining readable. Pages are clean, free from scan artifacts, stains, or skewed content, though one page notes "IMAGE NOT AVAILABLE" for accessories.
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