Overview
The Kubota BX22, LA210 and BT600 Tractor Loader Backhoe Workshop Service Manual provides technical documentation for maintenance, troubleshooting, inspection and component repair of the tractor, front loader and backhoe combination. The workshop reference covers engine systems, hydrostatic transmission (HST), front axle, power steering, hydraulics, electrical equipment and attachment servicing. Its dedicated loader and backhoe chapters provide the technical information needed to inspect, maintain and repair the corresponding equipment assemblies.
The documentation separates component construction and operating principles from troubleshooting, checking, adjustment, disassembly and servicing procedures. Engine references include lubrication, cooling and fuel systems, while the transaxle chapter covers hydrostatic drive operation, hydraulic pressure-control valves, brakes and power take-off (PTO) components. Additional sections address hydraulic pump and control valve servicing, electrical starting and charging systems, loader hydraulic cylinders and backhoe control-valve operation. The General section provides maintenance schedules, tightening torques, lubricants and special service tools.
Safety: The workshop documentation includes Safety First instructions and dedicated safety decals for the front loader and backhoe. Review the applicable precautions and equipment identification before performing maintenance, attachment removal or hydraulic component servicing.
Table of Contents
Kubota BX22, LA210, BT600 Manual
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01. Safety and Specifications
- Safety First and Workshop Safety Instructions
- Tractor Technical Specifications
- Tractor Travelling Speeds
- Machine Dimensions
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02. General Information and Maintenance
- Tractor Identification
- General Workshop Precautions
- Electrical Wiring and Component Handling Precautions
- Battery, Fuse and Electrical Connector Precautions
- Circuit Tester Handling Instructions
- Lubricants, Fuel and Coolant Requirements
- General Fastener and Stud Bolt Tightening Torques
- UNC and UNF Threaded Fastener Specifications
- Tractor Maintenance Checklist
- Daily Inspection and Maintenance Checks
- Initial 50-Hour Maintenance Procedures
- Periodic Maintenance — Every 50 and 100 Hours
- Periodic Maintenance — Every 200 and 300 Hours
- Periodic Maintenance — Every 400 and 500 Hours
- 800-Hour Maintenance Checks
- 1,500- and 3,000-Hour Maintenance Checks
- Annual and Two-Year Maintenance Requirements
- Additional Maintenance and Service Checks
- Special Service Tools for Engine Repair
- Special Service Tools for Tractor Components
- Tyre Inflation Pressure and Wheel Tread Information
- Liquid Tyre Ballast
- Implement Limitations
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03. Engine — Mechanism and Servicing
- Engine Lubricating System
- Engine Cooling System
- Fuel System and Fuel Lines
- Engine Troubleshooting
- Engine Servicing Specifications
- Engine Tightening Torques
- Engine Separation and Removal Preparation
- Draining Engine Coolant and Oil
- Engine Body Checking and Adjustment
- Engine Body Disassembly and Assembly
- Engine Body Inspection and Servicing
- Lubricating System Checking and Servicing
- Cooling System Checking and Adjustment
- Cooling System Disassembly and Assembly
- Fuel System Checking and Adjustment
- Fuel System Disassembly and Assembly
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04. Transaxle and Hydrostatic Transmission (HST)
- Transaxle Structure and Operating Mechanism
- Hydrostatic Transmission Construction
- Hydrostatic Pump and Motor
- HST Charge Relief Valve
- HST Check and High-Pressure Relief Valves
- Hydrostatic Transmission Oil Flow
- HST Control Linkage
- Transaxle Brake Section
- Power Take-Off (PTO) System
- PTO Clutch and Hydraulic Control Valve
- Transaxle Troubleshooting
- Transaxle Servicing Specifications
- Transaxle Tightening Torques
- Transaxle Checking and Inspection
- Transaxle Separation and Removal
- Hydrostatic Transmission Disassembly and Assembly
- Transmission Case Disassembly and Assembly
- Hydrostatic Transmission Component Servicing
- Transmission Case Inspection and Servicing
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05. Front Axle — Mechanism and Servicing
- Front Axle Construction
- Front Axle Troubleshooting
- Front Axle Servicing Specifications
- Front Axle Tightening Torques
- Front Axle Checking and Adjustment
- Front Axle Assembly Separation
- Front Axle Disassembly and Assembly
- Front Axle Component Inspection and Servicing
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06. Power Steering System
- Power Steering Hydraulic Circuit
- Steering System Troubleshooting
- Steering Servicing Specifications
- Steering Tightening Torques
- Steering Relief Valve Inspection
- Power Steering Controller Removal
- Power Steering Cylinder Removal
- Steering Cylinder Disassembly and Assembly
- Steering Component Inspection and Servicing
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07. Hydraulic System and Mower Lift Linkage
- Hydraulic System Circuit
- Hydraulic Control Valve
- Flow Priority Valve
- Hydraulic Relief Valve
- Hydraulic Cylinder
- Hydraulic Block-Type Outlet
- Mower Lift Linkage Mechanism
- Hydraulic System Troubleshooting
- Hydraulic Servicing Specifications
- Hydraulic Tightening Torques
- Hydraulic Pump Inspection
- Hydraulic Control Valve, Pump and Cylinder Checking
- Hydraulic Component Adjustment
- Hydraulic Control Valve, Pump and Cylinder Disassembly
- Hydraulic Component Assembly Procedures
- Hydraulic Pump, Control Valve and Cylinder Servicing
- Mower Lift Linkage Servicing
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08. Electrical System and Diagnostics
- Tractor Electrical Wiring Diagram
- Engine Starting System and Safety Switch
- Headlight Electrical Circuit
- Turn Signal Lighting System
- Hazard Light Circuit
- Easy Checker Monitoring System
- Electrical System Troubleshooting
- Electrical Servicing Specifications
- Electrical Tightening Torques
- Battery Checking and Inspection
- Starting System Checking and Testing
- Starting System Disassembly and Assembly
- Starting System Component Servicing
- Charging System Checking and Testing
- Charging System Disassembly and Assembly
- Charging System Component Servicing
- Lighting System Checking and Inspection
- Electrical Gauge Inspection and Testing
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09. Front Loader — Mechanism and Servicing
- Front Loader Safety Decals
- Front Loader Technical Specifications
- Loader Operating Dimensions
- Loader Performance Ratings Without Load
- Front Loader Construction and Features
- Loader Hydraulic Circuit
- Boom Cylinder and Bucket Cylinder
- Front Loader Identification
- General Loader Maintenance Precautions
- Front Loader Lubricant Requirements
- Loader Maintenance Checklist
- Daily and Each-Use Loader Inspection
- Loader Maintenance — Every 10 Hours
- Front Loader Troubleshooting
- Loader Servicing Specifications
- General Fastener and Hydraulic Fitting Tightening Torques
- Front Loader Removal from Tractor
- Loader Control Valve Checking and Adjustment
- Loader Control Valve Disassembly and Assembly
- Bucket, Boom and Hydraulic Cylinder Disassembly
- Loader Hydraulic Cylinder Inspection and Servicing
- Side Frame and Front Guard Removal
- Hydraulic Tube and Main Frame Disassembly
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10. Backhoe — Mechanism and Servicing
- Backhoe Safety Decals
- Backhoe Component Terminology
- Backhoe Technical Specifications
- Backhoe Construction and Features
- Backhoe Hydraulic Circuit
- Backhoe Main Control Valve Construction
- Backhoe Control Valve Operating Principles
- Backhoe Overload Relief Valve
- Backhoe Hydraulic Cylinder
- Backhoe Identification
- General Backhoe Maintenance Precautions
- Backhoe Lubricant Requirements
- Backhoe Maintenance Checklist
- Daily and Each-Use Backhoe Inspection
- Backhoe Maintenance — Every 10 Hours
- Backhoe Troubleshooting
- Backhoe Servicing Specifications
- General Fastener and Hydraulic Hose Fitting Tightening Torques
- Backhoe Removal from Tractor
- Backhoe Installation and Mounting
- Backhoe Assembly Disassembly
- Backhoe Control Valve Checking and Adjustment
- Backhoe Control Valve Disassembly and Assembly
- Boom and Dipperstick Cylinder Disassembly
- Bucket and Swing Cylinder Disassembly
- Stabilizer Cylinder Disassembly and Assembly
- Backhoe Hydraulic Cylinder Servicing
Attachment-Specific Hydraulics and Service Procedures
The tractor hydraulic chapter includes the main control valve, flow priority valve, relief valve, hydraulic cylinder and mower lift linkage. The front loader and backhoe have their own hydraulic circuits and component servicing sections. When investigating attachment-related hydraulic faults, use the applicable attachment chapter for its control-valve specifications, cylinder procedures and maintenance requirements rather than relying solely on tractor hydraulic information.
The loader documentation provides separate instructions for removal from the tractor, control-valve servicing and boom and bucket cylinder repair. The backhoe references include removal, mounting, control-valve operation and cylinder servicing for the boom, dipperstick, bucket, swing and stabilizers. The Electrical System chapter also includes battery, starting and charging checks, which should be evaluated using the corresponding workshop testing procedures when diagnosing electrical supply or starting faults.
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