Overview
The Kubota T1570, T1670, T1770 and T1870 Lawn Tractor Mower Workshop Service Manual provides technical documentation for maintenance, inspection, troubleshooting and component repair of these Kubota lawn tractors. The workshop reference covers machine identification, engine systems, hydrostatic transaxle, brakes, front axle, steering, fender and lift mechanisms, power take-off (PTO), electrical equipment and mower assemblies. Its technical chapters provide servicing specifications, adjustment procedures, component disassembly and repair information for the applicable machine configurations.
The documentation includes two separately indexed engine sections covering engine-body servicing, lubrication, fuel systems, ignition specifications and high-altitude compensation equipment. Drivetrain references address hydrostatic transmission inspection, brake servicing, steering components and mower lift linkage, while dedicated PTO and mower chapters provide additional adjustment and repair information. Electrical coverage includes starting, charging and ignition systems, wiring diagrams and the optional Kubota Reverse Awareness (KRA) system. General maintenance information provides inspection intervals, tightening torques, fuel and lubricant requirements and special service tools.
Notice: The detailed hydrostatic transaxle checking and disassembly section identifies specific applicable models. The workshop index also distinguishes Engine 1 and Engine 2, together with Electrical System 1 and Electrical System 2, without explicitly assigning each section to an individual model. Confirm the applicable equipment configuration before using these procedures. KRA information applies only where equipped.
Table of Contents
Kubota T1570, T1670, T1770, T1870 Manual
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01. Information, Safety and Specifications
- Safety First and Workshop Safety Instructions
- Machine Safety Decals
- Lawn Tractor Technical Specifications
- Machine Dimensions
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02. General Information and Maintenance
- Machine Features and Equipment Identification
- Machine, Engine and Mower Identification
- General Workshop Precautions
- Electrical Wiring and Component Handling Precautions
- Battery, Fuse and Electrical Connector Precautions
- Circuit Tester Handling Instructions
- Fuel and Lubricant Requirements
- General Fastener Tightening Torques
- Metric Screw, Bolt and Nut Specifications
- UNC and UNF Threaded Fastener Specifications
- Machine Maintenance Checklist
- Daily Inspection and Maintenance
- Periodic Maintenance — Every 25 Hours
- Periodic Maintenance — Every 50 Hours
- Periodic Maintenance — Every 100 Hours
- Periodic Maintenance — Every 200 Hours
- Periodic Maintenance — Every 300 Hours
- Two-Year Maintenance Requirements
- Special Service Tools
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03. Engine 1 — Troubleshooting and Servicing
- Engine Troubleshooting
- Engine Body Service Specifications
- Engine Lubricating System Specifications
- Engine Ignition System Specifications
- Engine Tightening Torques
- Engine Separation and Removal Preparation
- Engine Removal and Reinstallation
- Engine Body Disassembly and Assembly
- Engine Body Inspection and Servicing
- Lubricating System Checking
- Lubricating System Disassembly and Assembly
- Fuel System Checking and Adjustment
- Fuel System Component Servicing
- High-Altitude Kit
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04. Engine 2 — Troubleshooting and Servicing
- Engine Troubleshooting and Fault Diagnosis
- Engine Body Service Specifications
- Engine Lubricating System Specifications
- Engine Ignition System Specifications
- Engine Tightening Torques
- Engine Separation and Removal
- Engine Body Checking and Adjustment
- Engine Body Disassembly and Assembly
- Engine Body Inspection and Servicing
- Lubricating System Checking and Adjustment
- Lubricating System Disassembly and Assembly
- Lubricating System Component Servicing
- Fuel System Checking and Adjustment
- Fuel System Component Servicing
- High-Altitude Compensation Kit
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05. Hydrostatic Transaxle — Mechanism and Servicing
- Hydrostatic Transaxle Construction
- Hydrostatic Transmission Troubleshooting
- Hydrostatic Transaxle Service Specifications
- Hydrostatic Transaxle Tightening Torques
- Hydrostatic Transaxle Checking and Adjustment — T1670, T1770 and T1870
- Hydrostatic Transaxle Removal and Separation
- Hydrostatic Transaxle Disassembly
- Hydrostatic Transaxle Assembly Procedures
- Hydrostatic Transaxle Inspection and Checking
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06. Brake System — Mechanism and Servicing
- Brake System Troubleshooting
- Brake Service Specifications
- Brake Tightening Torques
- Brake Checking and Adjustment
- Brake Component Disassembly and Assembly
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07. Front Axle — Mechanism and Servicing
- Front Axle Troubleshooting
- Front Axle Service Specifications
- Front Axle Tightening Torques
- Front Axle Checking and Adjustment
- Front Axle Assembly Removal
- Front Axle Disassembly and Assembly
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08. Steering System — Mechanism and Servicing
- Steering System Troubleshooting
- Steering Service Specifications
- Steering Tightening Torques
- Steering System Checking
- Steering Component Disassembly and Assembly
- Steering Component Servicing
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09. Fender and Lift System
- Fender and Lift System Troubleshooting
- Fender and Lift System Service Specifications
- Fender and Lift System Tightening Torques
- Lift System Checking and Adjustment
- Fender Removal and Separation
- Lift Linkage Disassembly and Assembly
- Lift Lever Disassembly and Assembly
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10. Power Take-Off (PTO) System
- PTO System Troubleshooting
- PTO Service Specifications
- PTO Tightening Torques
- PTO System Checking and Adjustment
- PTO Component Disassembly and Assembly
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11. Electrical System 1 — Mechanism and Servicing
- Electrical Wiring Diagram and Wiring Colours
- Kubota Reverse Awareness (KRA) System — If Equipped
- Electrical System Troubleshooting
- Electrical Service Specifications
- Electrical Tightening Torques
- Battery Inspection and Testing
- Starting System Checking
- Starting System Disassembly and Assembly
- Starting System Component Servicing
- Charging System Checking and Servicing
- Ignition System Checking, Adjustment and Inspection
- Electrical Equipment Inspection
- KRA System Servicing — If Equipped
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12. Electrical System 2 — Mechanism and Servicing
- Electrical Wiring Diagram and Wiring Colours
- Kubota Reverse Awareness (KRA) System — If Equipped
- Electrical System Troubleshooting
- Electrical Service Specifications
- Electrical Tightening Torques
- Battery Inspection and Testing
- Starting System Checking
- Starting System Disassembly and Assembly
- Starting System Component Servicing
- Charging System Checking
- Ignition System Checking and Inspection
- Ignition System Component Servicing
- Electrical Equipment Inspection
- KRA System Servicing — If Equipped
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13. Mower — Inspection and Servicing
- Mower Troubleshooting
- Mower Service Specifications
- Mower Tightening Torques
- Mower Checking and Adjustment
- Mower Component Disassembly and Assembly
Engine Variants, Hydrostatic Drive and Reverse Awareness Controls
The workshop documentation separates engine servicing into two indexed sections, each containing engine-body, lubrication, fuel-system and ignition references. Both sections also identify high-altitude equipment. The Hydrostatic Transaxle chapter provides separate checking, removal, disassembly and assembly instructions, with detailed procedures identified for specified models in the covered range. Consult the relevant engine and drivetrain sections together when investigating operating or transmission-related faults.
The Fender and Lift System, PTO and Mower chapters provide distinct references for adjustment and component servicing. Electrical coverage is likewise divided into two sections, each addressing starting, charging and ignition equipment along with the optional KRA system. Confirm the installed electrical configuration before applying reverse-awareness diagnostics or servicing procedures, and use the applicable mower and lift-system chapters when investigating cutting or lifting operation.
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