Target Audience:
Owners, mechanics, and restorers of AJS Heavyweight 600 motorcycles from the 1957-1966 period.
Manual Value:
Provides dealership-level repair and maintenance information, enabling cost savings on professional servicing.
Completeness:
Encompasses all necessary instructions for any repair, aiming to empower users to maintain their vehicles like professionals.
Accuracy:
Strives for accuracy, providing reliable information for effective vehicle maintenance and repair.
Engine:
Full engine disassembly, assembly, tuning, lubrication system, and performance diagnostics.
Transmission:
Complete transmission disassembly, assembly, and repair procedures.
Fuel System:
Carburetor tuning, fuel delivery system maintenance, and troubleshooting.
Ignition System:
Ignition timing, spark plug service, magneto/coil testing, and electrical troubleshooting.
Electrical System:
Wiring diagrams, lighting systems, charging system (generator/dynamo), battery maintenance, and component testing.
Brakes:
Drum brake adjustment, lining replacement, and hydraulic system maintenance (if applicable to specific variants).
Suspension:
Front fork (telescopic) overhaul, rear suspension components, and lubrication.
Bodywork:
Frame inspection, body panel alignment, and general maintenance.
Exhaust System:
Exhaust pipe mounting, muffler service, and gasket replacement.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication points, and general upkeep.
Tune Ups:
Detailed procedures for engine tuning, including carburetor synchronization and ignition timing adjustments.
Disassembly Assembly:
Step-by-step instructions for the removal and installation of all major components and sub-assemblies.
Troubleshooting:
Diagnostic procedures for identifying and rectifying common problems across all systems.
Overhaul:
In-depth instructions for the complete overhaul and rebuilding of the engine, gearbox, and other critical units.
Depth:
Advanced to expert level, suitable for experienced mechanics and dedicated enthusiasts undertaking full restorations or complex repairs.
Special Tools:
References specific AJS special tool numbers and illustrations where required for adjustments or repairs.
Proprietary Components:
Includes repair instructions for proprietary components manufactured for the AJS Heavyweight 600, and instructions from respective component manufacturers.
Engine Type:
Likely single-cylinder, OHV (Overhead Valve) based on typical AJS 'Heavyweight' models of the era. Specific details require consulting the manual.
Displacement:
600 cc (as stated in the product name)
Horsepower Range:
Estimated 25-35 hp, depending on specific tuning and model year. (Actual figures to be confirmed in manual).
Carburetor Type:
Likely a single Amal or similar British carburetor. Specific model and jetting details are critical and found within the manual.
Oil Change Interval:
Typically every 1,000-1,500 miles or annually. Specific intervals and oil type are crucial details found in the manual.
Tune Up Interval:
Recommended annually or every 3,000-5,000 miles, depending on usage and condition. Manual will provide precise guidance.
Engine Oil Grade:
Likely SAE 20W/50 or 10W/40, depending on ambient temperatures. Specific grade, API service classification, and capacity will be in the manual.
Gearbox Oil Type:
Manual will specify appropriate gear oil grade and capacity for the transmission. Common for the era were EP 80 or similar.
Common Wear Items:
Potential wear on valve guides, piston rings, primary chain, and clutch plates. Carburetor jetting and float levels require periodic attention.
Electrical Aging:
Wiring insulation degradation, magneto drive wear, and brush wear on the dynamo are common issues for motorcycles of this age. Manual will guide diagnosis.
Technical Recommendations
Torque Wrench Usage:
Essential for ensuring fasteners are tightened to specified torque values, critical for engine and chassis integrity.