This comprehensive instruction manual covers AJS E3, E4, E5, B, B1, B2, and B5 motorcycle models manufactured between 1921 and 1925. It provides detailed guidance on managing and maintaining your motorcycle, encompassing a wide range of topics such as driving instructions, engine lubrication, and adjustments. The manual includes in-depth explanations of the engine, magneto, and timing systems, offering guidance on troubleshooting ignition issues and setting the engine timing. It also features detailed instructions on dismantling and adjusting the gearbox, clutch, and chains, along with essential maintenance tips for chain care and repair. You'll find detailed instructions on adjusting the carburetor for smooth running and optimal performance, as well as guidance on dealing with issues like flooding and adjusting the slides. The manual also covers the detachable wheels, offering detailed instructions on removing and repairing both the front and rear wheels. Additionally, it provides information on adjusting hub bearings, replacing the foot starter spring, and adjusting the steering head. With clear explanations and detailed illustrations, this manual is an invaluable resource for AJS owners seeking comprehensive maintenance and repair guidance.

The AJS E3, E4, E5, B, B1, B2, and B5 motorcycles, produced by the AJS company from 1921 to 1925, were a pivotal chapter in the evolution of British motorcycling. These machines represent a transition period for AJS, moving from the simpler, utilitarian designs of the pre-war era towards the more refined and powerful motorcycles that would define the 1920s and 1930s. The E series, specifically the E3, E4, and E5, were known for their sturdy construction and reliable performance. They featured a 349cc side-valve engine, offering an output of around 4-5 horsepower. The E series models were often used for practical purposes, such as commuting and light delivery work.

The B series, encompassing the B, B1, B2, and B5 models, represented a step up in terms of both power and sophistication. These motorcycles were characterized by a larger, 499cc side-valve engine, capable of producing around 6-7 horsepower, and introduced improvements like a more powerful magneto ignition. The B series models were designed to appeal to a broader market, encompassing both practical and sporting applications. These machines were popular among both commuters and enthusiasts alike, showcasing their versatility and appeal. The AJS E3, E4, E5, B, B1, B2, and B5 motorcycles were instrumental in establishing AJS as a significant player in the British motorcycle market, paving the way for the company's future success with high-performance models like the "Big Four" and the "Red Devil."