International 766, 966, 1066 & 1466 Tractor Operator’s Manual
118 Pages
This Manual is available in: Digital Download (PDF)
This International 766, 966, 1066, and 1466 Tractor Operator’s Manual is the factory-issued operating and maintenance guide for International Harvester large-frame row-crop tractors. It provides detailed instructions for safe operation, daily use, maintenance, hydraulic systems, PTO operation, and tractor setup.
Designed for farmers, operators, mechanics, and restorers, this manual covers both diesel and gasoline engine configurations, multiple transmission options, cab and open-station tractors, and a wide range of optional equipment. Whether you are running a 1066 in the field or maintaining a 1466 in the shop, this manual is an essential reference.
Manual Contents Overview
Safety & Identification
- Serial number identification
- Safe operating practices
- Transporting and cab safety
Instruments, Controls & Daily Operation
- Tractor and cab controls
- Break-in procedures
- Starting, stopping, and driving
- Torque Amplifier and transmission controls
- All-wheel drive operation
Engine & Fuel Systems
- Diesel engine operation and fuel system
- Gasoline engine operation
- Turbocharger priming
- Fuel injection pumps and carburetors
- Cold weather starting procedures
Hydraulics, PTO & Hitch Systems
- Three-point hitch controls and adjustments
- Remote hydraulic valves and outlets
- Operating auxiliary cylinders
- Independent power take-off (PTO)
Cooling, Electrical & Air Systems
- Cooling system service
- Air cleaner maintenance
- Charging, starting, and lighting systems
- Warning lights and fuses
Wheels, Tires & Ballast
- Front and rear axle configurations
- Adjusting tread widths
- Dual wheels and ballast weights
- Tire inflation and load charts
Maintenance, Lubrication & Storage
- Lubrication schedules and charts
- Preventive maintenance guide
- Cab equipment maintenance
- Long-term tractor storage
Specifications & Optional Equipment
- Model-specific specifications
- Optional equipment coverage
- Metric (SI) measurement conversions
Why This Manual Is Valuable
- Covers multiple IH models in one manual
- Includes diesel and gasoline engines
- Detailed hydraulic, PTO, and hitch operation
- Factory-correct operating and maintenance guidance
This is a high-quality digital scan of the original International Harvester operator’s manual. The PDF is delivered instantly after purchase and can be viewed, searched, or printed for personal use.
Manual Code
1 084 329 R2
Frequently Asked Questions
Which tractor models are covered?
This manual applies to International Harvester 766, 966, 1066, and 1466 tractors.
Does this manual include diesel and gasoline engines?
Yes. It covers both diesel and gasoline engine configurations where applicable.
Is this a printed manual?
No. This is a digital PDF download available immediately after purchase.
Does it include hydraulic and PTO operation?
Yes. The manual contains detailed instructions for hydraulic systems, remote valves, and PTO operation.
Can I print the manual?
Yes. You may print pages or the entire manual for personal reference.