The Harley-Davidson Duo-Glide 74 OHV 1959 Factory Service Repair Manual is your comprehensive guide to understanding and maintaining your classic motorcycle. This manual provides detailed instructions and diagrams for every aspect of repair and adjustment, making it an indispensable resource for both professional mechanics and dedicated DIY enthusiasts. It covers a wide range of procedures, from basic maintenance tasks like oil changes and tune-ups to more complex repairs involving the engine, transmission, brakes, electrical system, and more. Each step is clearly outlined in sequential order, ensuring a smooth and efficient repair process. This manual is designed to be a readily accessible reference, offering comprehensive explanations and precise instructions to help you confidently tackle any repair or adjustment on your 1959 Harley-Davidson Duo-Glide 74 OHV.

The Harley-Davidson Duo-Glide 74 OHV, introduced in 1959, marked a significant turning point in motorcycle history. This model, often fondly referred to as the "FL," represented a radical departure from the previous Panhead models and revolutionized the riding experience. The Duo-Glide's most defining feature was the introduction of a full-suspension system, featuring the revolutionary "Duo-Glide" rear suspension, which was a first for a production motorcycle. This groundbreaking design allowed for a smoother ride, even on rough roads, and significantly improved stability and handling. The 74 cubic inch (1210 cc) OHV V-twin engine, an evolution of the proven Panhead, offered increased power and torque, delivering a thrilling ride with a distinct Harley-Davidson rumble. This engine, coupled with the new suspension, made the Duo-Glide a popular choice for long-distance touring and cruising.

Beyond the mechanical innovations, the 1959 Duo-Glide 74 OHV also showcased a sleek and stylish design. The motorcycle featured a distinctive teardrop gas tank, chrome accents, and sleek lines that exuded the timeless appeal of classic American motorcycles. Its design elements, including the long, sweeping fenders and the signature "Harley-Davidson" script on the tank, have become iconic symbols of the brand's enduring legacy. The Duo-Glide 74 OHV, with its combination of innovative engineering, powerful performance, and classic styling, quickly became a beloved motorcycle, setting the stage for the future of Harley-Davidson touring motorcycles and establishing an enduring presence in the world of two-wheeled transportation.