This comprehensive Yamaha XS400 1979 Full Service Repair Manual is your complete guide to repairing, maintaining, rebuilding, refurbishing, or restoring your motorcycle. This manual covers the same vital information used by professional technicians and mechanics, providing detailed instructions for every diagnostic and repair procedure. It's designed to be accessible to both seasoned mechanics and those new to motorcycle maintenance, offering clear explanations for a wide range of tasks.

The manual is packed with detailed sub-steps that expand on repair procedures, along with notes, cautions, and warnings to highlight critical information. Numbered instructions guide you step-by-step through each repair, making the process easy to follow. Bold figure numbers allow for quick cross-referencing with illustrations, while detailed drawings, photos, and enlarged insets help you visualize and examine parts in depth. The numbered table of contents allows you to quickly find the information you need.

Troubleshooting and electrical service procedures are combined with clear wiring diagrams for ease of use, making it simple to diagnose and repair your Yamaha XS400 1979's electrical system. This manual is your ultimate resource for keeping your motorcycle in top condition.

The Yamaha XS400, launched in 1977, was a successful standard motorcycle that captured the hearts of many riders seeking a reliable and affordable machine. This air-cooled, 4-stroke, parallel-twin motorcycle was a testament to Yamaha's engineering prowess, boasting a simple yet elegant design. The XS400's 399cc engine, producing around 35 horsepower, was well-suited for both commuting and weekend rides. Its smooth power delivery and forgiving handling made it a popular choice for beginners and experienced riders alike. The XS400's lightweight construction (around 370 pounds) further enhanced its maneuverability, allowing it to navigate city streets and winding roads with ease. It offered a comfortable riding position, thanks to its upright handlebars and well-padded seat, making it suitable for longer journeys. The motorcycle's distinctive styling, featuring a sleek fuel tank and round headlamp, was a reflection of the era's aesthetic trends. Moreover, the XS400's reliability and ease of maintenance cemented its reputation as a solid and dependable companion for riders of all levels.

The Yamaha XS400's popularity extended beyond its practicality. It became a cultural icon, appearing in popular media and capturing the spirit of the era. Its unpretentious nature and accessible price point made it a symbol of freedom and adventure for a generation of riders. As a testament to its enduring legacy, the XS400 has attracted a dedicated following of enthusiasts who continue to appreciate its timeless design and classic riding experience. Although production ceased in 1980, the XS400 remains a sought-after motorcycle, with many dedicated owners meticulously restoring and maintaining these classic machines. The Yamaha XS400 stands as a remarkable example of Japanese engineering excellence and a symbol of a bygone era when motorcycles were more than just transportation; they were expressions of individuality and a gateway to endless adventures. The existence of a 1979 Full Service Repair Manual for the XS400 is a testament to the enduring appeal of this motorcycle, providing owners with the necessary knowledge to keep their classic machines running smoothly for years to come.