This comprehensive instruction manual for the 1931 AJS S Series motorcycle provides detailed guidance on all aspects of motorcycle operation and maintenance. The manual covers a wide range of topics including driving instructions, engine lubrication, engine adjustments and cleaning, magneto operation, point adjustment, timing, ignition troubleshooting, engine timing, gearbox operation and dismantling, clutch adjustment, transmission, chain adjustment and care, chain repair, chain rivet extractor, spring fork adjustment, rear wheel adjustment gauge, detachable wheels, tyre repair, front wheel removal, hub bearing adjustment, and general instructions. Illustrated with clear diagrams, the manual covers topics such as lubrication, push rod extractor, valve extractor, valve grinding tool, Vernier timing adjustment, arrangement of timing gear, AJS gearbox, chain repair parts, chain rivet extractor, front fork and adjustable handlebars, rear wheel adjustment, back detachable wheel, internal expanding brake, and adjustable saddle. This manual serves as an invaluable resource for owners and technicians alike, offering the knowledge necessary to properly service, maintain, diagnose, and repair the AJS S Series motorcycle.

The AJS S Series, introduced in 1931, marked a significant evolution in the history of AJS motorcycles, a brand renowned for its innovative designs and performance. This series, particularly the "S" model, was hailed as a masterpiece of engineering and aesthetics, capturing the essence of the burgeoning motorcycle culture of the era. The S series boasted a powerful 500cc single-cylinder engine, capable of delivering exceptional power and torque for its time. Its advanced design incorporated a rigid frame, a telescopic front fork, and a unique spring-loaded "floating" rear suspension, a feature that set it apart from its contemporaries. The S Series was meticulously crafted with attention to detail, featuring a classic teardrop fuel tank, a gracefully curved frame, and a sleek, streamlined design that epitomized the era's Art Deco aesthetic. It was available in both standard and sports variants, catering to diverse riding styles and preferences.

Beyond its technical prowess, the AJS S Series was renowned for its exceptional handling and riding experience. It offered a smooth, responsive ride that was both exhilarating and comfortable. The S series quickly gained popularity among both seasoned riders and enthusiasts alike, becoming a symbol of elegance and performance. It enjoyed significant success on the race track, participating in and winning numerous prestigious events, solidifying its reputation as a formidable competitor. The AJS S Series, with its innovative design, exceptional performance, and timeless elegance, remains a cherished icon in the annals of motorcycle history, a testament to the ingenuity and craftsmanship of the AJS brand. Even today, these classic machines are highly sought after by collectors and enthusiasts worldwide, capturing the spirit of an era that celebrated both speed and style.