This comprehensive workshop service repair manual is specifically designed for the AJS Heavyweight 350cc motorcycle, covering models manufactured from 1957 to 1966. Packed with detailed instructions, diagrams, and illustrations, this manual provides everything you need to successfully repair and maintain your classic AJS motorcycle.

The manual covers a wide range of topics, including:

* **General information** about the AJS Heavyweight 350cc, providing a foundational understanding of its design, construction, and operation.
* **Diagnosis and troubleshooting** procedures for identifying and resolving a variety of common motorcycle problems.
* **Detailed instructions** on how to perform service and repair work, including removal, installation, disassembly, and assembly procedures.
* **Extensive information** on adjustments, specifications, and tightening torques for various components.
* **Clear illustrations and diagrams** that visually guide you through each step of each procedure.
* **Important notes, cautions, and warnings** to ensure safe and effective repair practices.

This manual is a valuable resource for both professional mechanics and DIY enthusiasts who want to keep their AJS Heavyweight 350cc running in top condition. It provides a step-by-step approach to any repair task, ensuring confidence and accuracy throughout the process. Whether you're performing routine maintenance or tackling a complex repair, this manual will be an invaluable guide.

The AJS Heavyweight 350 cc, produced from 1957 to 1966, was a quintessentially British motorcycle designed to be a robust and reliable commuter, while also offering enough power to be enjoyable for touring. This model marked a significant departure for AJS, departing from the sporty, single-cylinder machines they were known for and moving towards a more practical, parallel-twin design. The 350 cc engine was a new development, featuring a robust cast-iron construction with a bore and stroke of 72 x 76 mm. While not a powerhouse, the engine delivered a smooth and reliable 22 horsepower, making the Heavyweight capable of speeds exceeding 80 mph. The chassis, designed for comfort and practicality, utilized a telescopic front fork and a swingarm rear suspension system. This combination provided a comfortable ride, suitable for both bustling city streets and long-distance journeys.

The AJS Heavyweight 350 cc was marketed as a versatile motorcycle perfect for the everyday rider. Its reliability and practicality made it a popular choice for commuters and those seeking a comfortable and capable machine for touring. However, the model faced tough competition in the burgeoning motorcycle market of the 1960s. The rising popularity of lighter and more sporty machines, coupled with the increasing dominance of Japanese manufacturers, led to the eventual discontinuation of the Heavyweight in 1966. Despite its relatively short production run, the AJS Heavyweight 350 cc left a lasting mark on the history of AJS motorcycles. Its robust design and reputation for reliability made it a popular choice for a generation of British riders, and it continues to be appreciated by enthusiasts for its classic style and understated charm.