## **1931 AJS: A Triumph of British Engineering**
The 1931 AJS is a testament to the ingenuity and craftsmanship of the British motorcycle industry. With its advanced design, innovative features, and exceptional performance, this iconic machine has left an enduring mark on the annals of motorcycling history.
**Engine:** At the heart of the AJS 1931 lies a meticulously engineered single-cylinder, four-stroke engine. Displacing 499cc, this powerplant boasts a high compression ratio of 6.0:1, resulting in impressive performance and fuel efficiency. Its overhead-valve (OHV) design ensures optimal combustion, while the enclosed valve gear contributes to reduced noise and increased longevity.
**Ignition:** The AJS 1931 features a reliable magneto ignition system that provides a consistent and powerful spark. The precision timing and high-energy output ensure a smooth and responsive engine, even in challenging conditions.
**Carburetion:** Fuel is delivered via a centrally mounted Amal carburetor, which incorporates a float chamber and adjustable jetting. This allows for fine-tuning of the air-fuel mixture to optimize performance and fuel economy.
**Transmission:** The AJS 1931 employs a robust three-speed gearbox with a positive-action shift mechanism. The gears are precisely machined and hardened for durability and smooth engagement. The primary drive is achieved through a roller-chain transmission, providing efficient power transfer and low maintenance requirements.
**Chassis:** The AJS 1931 utilizes a rigid frame construction that combines strength and agility. The lightweight steel tubing is carefully braced and triangulated to ensure optimal rigidity and handling. The front suspension consists of leading-link forks, while the rear suspension employs a rigid frame with adjustable spring stays.
**Brakes:** Braking is handled by a pair of 7-inch (178mm) drum brakes, one on the front wheel and one on the rear wheel. These brakes offer reliable stopping power and are actuated by a sophisticated system of levers and cables.
**Wheels and Tires:** The AJS 1931 rolls on 19-inch wheels, shod with high-quality tires that provide excellent traction and stability. The wheels are made of lightweight aluminum, reducing unsprung weight and contributing to agile handling.
**Design and Aesthetics:** The AJS 1931 is a visual masterpiece, showcasing the elegant lines and timeless styling of early British motorcycles. The sweeping fenders, polished aluminum components, and handsome paintwork exude an air of sophistication and classic beauty.

The manual what will be send to you will contain all the necessary needed instructions for all the repairs for your vehicle from front to the back of your car.
The same manual is used by your garage or workshop to repair your car.
So you could save you a lot of money with this manual, it will give you all the technical information what is needed to get your car running in 100% condition.
You will find illustrations, diagrams technical specifications, depth illustrations and step by step explanations how to do the job, even if you don't have much knowledge about cars this could be understood with some basic mechanical knowledge to safety and easily servicing your car.

CONTENTS OF THE REPAIR MANUAL
CONTENTS. — 3 —
Foreword 2
Driving Instructions—Taking Over a New Machine
" D o n t ' s " in Driving 6
Lubrication 7-9
Useful Information Chart Centre Pages
Decarbonisation 10-13
Magneto 14
Contact Breaker Point Adjustment 14
Timing 14
Ignition Trouble 15
Chain Adjustment 16
Valve Timing 16
Gear Box 17
Clutch Adjustments .. 17-18
Adjustment of Chains 19
Chain Repairs 19-20
Chain Rivet Extractor 20-21
Steering Head and Handlebar Adjustment 21
Spring Fork Adjustment and Fork Action Damper
Rear Wheel Adjustment Gauge 22
Removal of Wheels 22-24
Wheel Bearings 24
Hand Gear Control Adjustment 25
Carburettor Adjustment 25-26
Brake Adjustment 27
Adjustable Saddle 27
Inflation Pressures 28
General Instructions 28
Sidecar Hints 29
Hints and Tips for Hill Climbs and Speed Events 30
Legal Matters 31
Guarantee Conditions 32

AND MUCH MORE.

All the files can be printed out individually.