This comprehensive New Holland Fiat 45-66 & 45-66DT Tractor Operator's Manual is your essential guide to understanding and maintaining your tractor. It covers a wide range of topics designed to help you operate your tractor safely and efficiently.

The manual begins with a detailed explanation of safety precautions, emphasizing the importance of safe operation and outlining potential hazards. It then delves into the controls and instruments of your tractor, providing a clear explanation of each component and its function.

You'll find detailed instructions on how to operate your tractor effectively, including starting, stopping, shifting gears, and using various tractor attachments. The manual also includes a comprehensive maintenance schedule, outlining regular maintenance tasks and procedures to ensure your tractor remains in optimal condition.

A dedicated section covers the electrical system of your tractor, providing valuable information on troubleshooting and maintenance. Additionally, the manual offers specifications for the different versions of the 45-66 and 45-66DT tractors, including the four-wheel drive, 20-speed, reverser, and no-spin versions.

Finally, the manual provides guidance on running-in your tractor and implementing a flexible maintenance schedule. A wiring diagram is also included for reference.

The New Holland Fiat 45-66 and 45-66DT tractors, produced in the 1980s, were robust and reliable workhorses designed for a wide range of agricultural tasks. These models were part of the Fiatagri range, known for their durability and performance. The 45-66 boasted a powerful 3.9-liter, four-cylinder diesel engine, delivering approximately 66 horsepower. This engine, combined with a robust transmission system, provided ample power for plowing, cultivating, and other demanding field operations. The 45-66DT variant offered a distinct advantage with its "DT" designation, indicating it was equipped with a "direct drive" transmission. This system, unlike a standard gearbox, directly linked the engine to the wheels, eliminating the need for a separate transmission. This direct drive configuration resulted in higher efficiency, reduced wear and tear on components, and potentially improved fuel economy.

The New Holland Fiat 45-66 and 45-66DT tractors were designed for user-friendliness. The layout of controls was intuitive, allowing operators to quickly and easily manage the machine's functions. The tractors featured a spacious operator cabin, providing a comfortable environment for extended work sessions. The well-designed hydraulic system effortlessly handled implements and attachments, making tasks like plowing, cultivating, and baling more efficient. These models are known for their versatility and adaptability, making them suitable for a diverse range of agricultural applications. Overall, the New Holland Fiat 45-66 and 45-66DT tractors represented a dependable and capable option for farmers and agricultural professionals seeking a durable and efficient workhorse for their operations.