This comprehensive workshop service repair manual is specifically designed for the AJS Heavyweight 350 cc motorcycle, covering models produced from 1957 to 1966. It empowers you to perform a wide range of repairs and overhauls on your classic motorcycle, assuming you possess a foundational understanding of general motorcycle maintenance practices. The manual delves into the intricacies of this particular model, emphasizing the unique aspects of its design and operation. This detailed approach enables you to deliver professional-quality service and maintain your motorcycle to the highest standards.

The manual includes instructions for components manufactured specifically for the AJS Heavyweight 350 cc motorcycle during this period. Instructions for repairs involving proprietary components are also included, drawing from the expertise of the respective component manufacturers. This integration ensures technicians gain a thorough understanding of each component's function and its contribution to the overall performance of the motorcycle.

This manual serves as your complete guide to AJS Heavyweight 350 cc motorcycle maintenance and repair. It covers a wide spectrum of topics, from routine tune-ups and general maintenance to detailed disassembly and reassembly procedures. You'll find information on:

* **Tune-ups:** The manual provides comprehensive guidance on performing accurate tune-ups for your AJS Heavyweight 350 cc motorcycle.
* **Maintenance:** Learn about the proper maintenance procedures required to keep your motorcycle in peak condition.
* **Removal and Installation:** The manual offers detailed instructions on removing and installing various components of your AJS Heavyweight 350 cc motorcycle.
* **Assembly and Disassembly:** Gain proficiency in disassembling and assembling key components of your motorcycle.
* **Fuel System:** Discover the intricacies of your fuel system and how to diagnose and repair any issues.
* **Ignition System:** Understand the workings of the ignition system and learn how to troubleshoot and repair ignition problems.
* **Lubrication System:** The manual provides detailed information on the lubrication system, covering its proper maintenance and troubleshooting.
* **Exhaust System:** Gain insights into the exhaust system's operation and learn how to address potential issues.
* **Electrical System:** Explore the motorcycle's electrical system, covering its components, wiring diagrams, and troubleshooting techniques.
* **Body:** The manual includes detailed information on the bodywork, covering repair and restoration procedures.
* **Engine and Transmission:** The manual provides comprehensive instructions for dismantling and reassembling the engine and transmission, equipping you to tackle the most complex repairs.

Through this manual, you'll acquire the knowledge and skills to perform professional-level repairs and maintenance on your AJS Heavyweight 350 cc motorcycle. This valuable resource allows you to be better informed and more knowledgeable about your motorcycle, enabling you to tackle repairs with confidence.

The AJS Heavyweight 350, produced from 1957 to 1966, was a motorcycle that marked a significant shift in the British manufacturer's approach. While AJS was known for its racing pedigree and high-performance machines, the Heavyweight 350 was designed for a different market – the everyday rider. This model represented a departure from the sport-oriented design philosophy and focused on practicality and affordability. It served as a reliable and robust commuter motorcycle for the burgeoning post-war middle class, offering a comfortable and accessible ride. The Heavyweight 350 featured a traditional, single-cylinder, four-stroke engine with a bore and stroke of 76 x 88 mm, displacing 348cc. This engine was known for its durability and ease of maintenance, making it a popular choice for riders seeking a low-maintenance and reliable machine.

The Heavyweight 350 was a departure from the lightweight, high-performance machines that AJS was known for. It featured a sturdy, single-loop frame, telescopic front forks, and a swinging arm rear suspension, providing a comfortable ride even on rough roads. The motorcycle was also equipped with a 4-speed gearbox, offering a practical spread of gears for both urban and rural riding. The Heavyweight 350 was available in various trim levels, including standard, deluxe, and even a "Roadster" version, allowing riders to choose the model best suited to their needs and preferences. Despite its focus on practicality, the Heavyweight 350 still retained some of AJS's renowned engineering prowess. The engine was well-designed and offered a smooth and reliable performance, while the overall build quality was solid and robust. This combination of practicality and quality made the Heavyweight 350 a successful model for AJS, contributing to the company's reputation for building motorcycles that were both reliable and enjoyable to ride.