Part of the Kubota Repair Manuals.
This is the factory Kubota Workshop Manual covering the LA1301, LA1301S-1, LA1601, and LA1601S front loaders in one 45-page PDF (Kubota publication 9Y011-17011). A single manual serves all four models, including the serial number split below 10218 and above 10219.
It covers safety, loader terminology, and full specifications for each model, then a mechanism section explaining the hydraulic circuit, control valve, relief valve, and anti-cavitation operation. The servicing chapters add troubleshooting, servicing specifications, tightening torques, dismounting the loader, and cylinder and frame overhaul.
With it you can identify which torque and pressure values apply to your exact model, diagnose a loader that lifts slowly or drifts down, reseal the boom and bucket cylinders, and set the main and port relief valves. It downloads as a printable PDF for the shop, tablet, or phone.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Instructions | 3-5 | |
| Safety Decals | 6-8 | |
| Terminology | 9 | Bucket Cylinder, Boom, Mechanical Self Leveling Linkage, Mounting Pin, Side Frame, Hydraulic Control Valve, Bucket, Boom Cylinder |
| Specifications | 10-13 | Suitable Tractor, Loader Specifications, Bucket Specifications, Operating Dimensions [LA1301, LA1601], Performance Ratings [LA1301, Dimensional Specifications [LA1301S-1 |
| Mechanism | 14-21 | Features, Hydraulic Circuit, Control Valve Assembly and Relief Valve, Boom Cylinder and Bucket Cylinder, Relief Valve, Relief Operation, Anti-Cavitation Operation |
| Troubleshooting | 23-26 | Maintenance Check List, General, Check Points Every 10 Hours |
| Dismounting Front Loader From Tractor | 27-30 | Tightening Torques, Servicing Specifications, Tightening Torques of Screws, Bolts and Nuts |
| Disassembling Control Valve | 31-34 | Checking, Disassembling and Servicing, Dismounting Hydraulic Hoses, Control Valve Cover and Cables |
| Disassembling Boom Control Valve | 35-36 | Control Valve Separation of Section |
| Disassembling Controller and Cables | 37-38 | Controller Stand, Controller, Cables, Lock Lever, Cabin Bracket, Bucket, Boom, Hydraulic Cylinders |
| Disassembling Piston Rod Assembly | 39-40 | Cylinders Hydraulic Hoses |
| Installing O-Ring and Piston Seal | 41-42 | Piston Seal, O-Ring, Piston, Slide Jig, Correcting Jig, Piston Rod, Tool Box, Tool Box Stay |
| Front Guard and Main Frame | 43-44 | Main Frame Hydraulic Hoses |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Main frame mounting bolt and nut (clutch housing) tightening torque | 366 N-m (37.5 kgf·m, 270 ft-lbs) | p. 29 |
| Hose fitting and flare nut (3/4") tightening torque | 35 to 41 N-m (3.6 to 4.1 kgf·m, 26 to 30 ft-lbs) | p. 28 |
| Gap between boss and lock nut for hydraulic tubes | 2 to 3 mm (0.08 to 0.12 in.) | p. 39 |
| Bucket cylinder piston mounting nut tightening torque | 427 to 441 N·m (43.6 to 44.9 kgf·m, 315 to 325 ft-lbs) | p. 40 |
| Adapter and elbow (7/8") tightening torque | 77 to 85 N-m (7.9 to 8.7 kgf-m, 57 to 63 ft-lbs) | p. 34 |
| Relief valve setting pressure | 20.3 to 20.7 MPa (207 to 211 kgf/cm², 2950 to 3000 psi) | p. 32 |
| Control valve mounting bolt tightening torque | 37 to 43 N-m (3.7 to 4.4 kgf·m, 27 to 32 ft-lbs) | p. 33 |
| Relief valve setting pressure (Condition: Engine Speed: Maximum, Oil Temperature: 45 to 55 °C (113 to 131 °F)) | 20.3 to 20.7 MPa (207 to 211 kgf/cm², 2950 to 3000 psi) | p. 27 |
| M-110 | ||
| Transmission Case Capacity, M-110 | 55.0 L | p. 23 |
| M-120 | ||
| Transmission Case Capacity, M-120 | 58.0 L | p. 23 |
