Part of the Kubota Operator Manuals.
This Kubota Operator Manual covers the LA272, LA302, LA352, and LA402 front loaders across all 36 pages. It is the factory operator handbook for owners and independent mechanics who want to set up, run, and maintain these loaders correctly instead of guessing.Inside you get the full specifications and performance charts, setting-up and mounting instructions, pre-operation checks, and step by step operating technique for filling, lifting, carrying, dumping, and float control. Maintenance, lubrication intervals, and the loader removal, storage, and reinstallation procedures are all documented, along with the hydraulic block and main frame torque figures.Whether you are attaching the loader for the first time, bleeding air from the hydraulics, or chasing a slow lift, this manual gives you the model specific numbers and procedures. Download it as a PDF and print any page you need at the workbench.
What's Inside This Kubota LA272–LA402 Series Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Operation | 7-10 | Read and Understand Manuals, ROPS and Seat Belt Use, Loader Operation Safety, Handling Loose or Shiftable Loads, Parking and Leaving Tractor, Loader Controls and Maintenance |
| Servicing of Loader | 11-22 | Specifications, Performance Chart, Loader Terminology, Setting-Up Instructions |
| Pre-Operation Check | 23-24 | Lubrication, Transmission Fluid, Rear Ballast, Tire Inflation, Test Operation, Removing Air From Hydraulic System |
| Operating the Loader | 25-29 | Filling the Bucket, Lifting the Load, Carrying the Load, Dumping the Bucket, Lowering the Bucket, Operating with Float Control, Loading From a Bank, Peeling and Scraping |
| Maintenance | 30-31 | Lubrication, Daily Checks (American Standard Cap Screws with Unc or Unf Threads, Metric Cap Screws) |
| Removing the Loader | 32 | Raise Boom and Stop Engine, Remove Spring Pins and Rotate Stands, Lower Boom and Raise Front Wheels, Release Hydraulic Pressure and Disconnect Hoses, Back Tractor Away |
| Storing the Loader | 33 | Store in Clean Dry Place, Ensure Proper Support, Attach Protective Plugs and Caps, Check Hydraulic Hoses and Connections, Lubricate Loader, Apply Grease to Cylinder Rods and Pins |
| Reinstalling the Loader | 34 | Drive Tractor Between Side Frames, Connect Hoses, Engage Side Frames with Main Frame, Reinstall Mounting Pins, Store Stands to Original Positions, Lower Boom and Level Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| LA272, LA302, LA352, LA402 | ||
| Main frame (Clutch housing) bolts torque | 8.5 kgf·m (61 ft-lbs) | p. 22 |
| Main frame (Front axle frame) bolts torque | 15.0 kgf·m (108 ft-lbs) | p. 22 |
| Main frame (Center frame) bolts torque | 10.0 kgf·m (72 ft-lbs) | p. 22 |
| Main frame (Sub frame) nuts torque | 8.5 kgf·m (61 ft-lbs) | p. 22 |
| Brace nuts torque | 18.0 kgf·m (130 ft-lbs) | p. 22 |
| Side frame connector nuts torque | 15.0 kgf·m (108 ft-lbs) | p. 22 |
| LA402 | ||
| Main frame (Sub frame) bolts torque | 17.0 kgf·m (123 ft-lbs) | p. 22 |
| Hose 7 length (with sleeve) | 1486 mm (58.5 in.) | p. 16 |
| All Models | ||
| Hydraulic leak troubleshooting | Visually check for hydraulic leaks and broken, missing, or malfunctioning parts. Make necessary repairs before operation. Inspect all hoses for cuts or wear and ensure all fittings are tight. Before disconnecting lines, relieve all hydraulic pressure. Do not use hands to search for suspected leaks; use cardboard or wood. If injured by escaping fluid, obtain medical treatment at once. | p. 30 |
| Mounting hardware torque guidance | Tighten all bolts and nuts in the following order to the required torque as specified in the 'Tightening Bolts and Nuts' table on page 22. Do not tighten any bolts firmly until most components are attached to the tractor. Before final tightening, apply down pressure to the bucket until the loader raises the front wheels slightly, and ensure mounting pins can be rotated easily. | p. 22 |
| Hydraulic block installation torque | 2.35 kgf·m (17 ft-lbs) | p. 17 |
| LA272, LA302, LA352 | ||
| Hose 7 length (without sleeve) | 1450 mm (57.1 in.) | p. 16 |
Kubota LA272–LA402 Series Common Problems This Manual Covers
Loader lifts slowly or weakly
A low hydraulic supply, trapped air, or dirty transmission fluid can leave the loader raising slowly or short of its rated load. The pre-operation checks cover fluid level, test operation, and bleeding air from the system.
Manual Section: Pre-Operation Check p. 23Hydraulic leaks at hoses and fittings
Aging seals, cracked hoses, or loose fittings show up as oil weeping at connections. The daily maintenance checks include inspecting hoses for cuts and wear and confirming every fitting is tight.
Manual Section: Maintenance p. 30Mounting bolts loosen over time
Vibration can back off the main frame and side frame hardware, leaving the loader loose on the tractor. The servicing section lists the exact tightening sequence and torque values for every mounting bolt and nut.
Manual Section: Servicing of Loader p. 11Pins hard to align on reattachment
Rust, misalignment, or a bucket left at the wrong angle makes the mounting pins difficult to insert. The reinstallation procedure sets the order for engaging the frames and lining the pins up.
Manual Section: Reinstalling the Loader p. 34Rough action or shifting loads
Jerky lift or a load that shifts in the bucket usually traces to technique rather than a fault. The operating section covers filling, carrying, and float control so material stays put and motion stays smooth.
Manual Section: Operating the Loader p. 25Rust or seal damage during storage
Left outside without protection, cylinder rods pit and seals dry out, causing leaks at the next use. The storage procedure covers supporting the loader, capping couplers, and greasing rods and pins.
Manual Section: Storing the Loader p. 33Frequently Asked Questions
Which Kubota loaders does this operator manual cover?
It covers the Kubota LA272, LA302, LA352, and LA402 front loaders, with model specific figures where the four differ in hydraulic flow, pressure, and weight.
What is the loader mounting bolt torque?
The main frame clutch housing bolts torque to 8.5 kgf-m (61 ft-lbs) and the front axle frame bolts to 15.0 kgf-m (108 ft-lbs). The servicing section lists the full sequence and every value. p. 22
How do I get air out of the hydraulic system?
The pre-operation check section explains cycling the loader to bleed trapped air after connecting hoses or changing fluid, which cures a slow or spongy lift. p. 23
How do I remove the loader from the tractor?
The removing the loader section gives the step order: raise the boom, rotate the stands down, release hydraulic pressure, disconnect the hoses, and back the tractor away. p. 32
How will I receive this Kubota LA272–LA402 Series Operator Manual?
A 36-page Operator Manual in searchable PDF format (3 MB), available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I free to print this Kubota LA272–LA402 Series Operator Manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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