🏷️ Basic Information Identification Make: AJS Model: Various Competition Models (G2, G2CS, G80CS, G80TCS, G9, G12, G12CS) Model Notes: Covers various competition and standard models including G2, G2CS, G9, G12, G12CS, G80CS, G80TCS. Codes Bulletin References: AJS_Service_Bulletin_4-56, 6-65, 6-66, 6-72, 6-73, 6-77, 6-79, 6-80, 6-81 👋 Introduction Market Position Target Audience: AJS motorcycle owners and enthusiasts undertaking maintenance, repair, or restoration, particularly those focused on competition models. Vintage Focus: Specifically targets owners of classic British motorcycles, catering to a niche but dedicated market of restorers and enthusiasts. Competitive Analysis Value Proposition: Provides essential technical data and repair procedures typically available only to professional workshops, enabling cost savings on maintenance and repairs. Key Features Unique Selling Points: Contains specialized information for specific AJS competition models, including modifications and performance tuning related bulletins. Illustrative Content: Promises illustrations, diagrams, and depth illustrations, which are crucial for understanding mechanical procedures. Practical Application: Designed for practical application in a garage or workshop setting, empowering owners to perform repairs themselves. 📋 Manual Details Coverage Areas Manual Type: Service Bulletins / Technical Information bulletins Language: English Format: Likely digital (PDF) or scanned reproductions of original bulletins Pages Included: Contains multiple distinct service bulletins, each addressing specific technical aspects or issues for AJS models. 📖 Manual Coverage Systems Covered Engine Management: Ignition system, lubrication, cylinder and piston specifications, oil consumption, valve timing, torque settings, inlet cam specifications. Transmission: Gear ratios for road use, transmission testing, G2CS transmission. Chassis And Suspension: Competition singles modifications (Cooper Motors), general repair instructions from front to back. Electrical System: Ignition circuit (6-65, 6-73), tachometer kits (6-81). Engine Internal: Cylinder and piston dimensions (6-80), valve timing (6-77), inlet cams (6-79). Fuel Induction: Inlet cam specifications (6-79) for scrambles models. Performance Enhancements: Competition modifications, gear ratio optimization, and ignition tuning. Procedures Included Maintenance: Lubrication procedures, ignition system maintenance, oil consumption management, valve timing adjustments. Repair: Engine component repairs (cylinder, piston), transmission adjustments, ignition circuit troubleshooting, general vehicle repairs. Technical Information: Technical specifications, torque settings, cylinder and piston dimensions, gear ratios, ignition timing information. Troubleshooting: Ignition circuit troubleshooting (6-65), oil consumption diagnosis (6-77), smoking issues (6-79). Installation: Tachometer kits installation (6-81). Rebuilding: Detailed cylinder and piston procedures imply capability for engine component rebuilding. Technical Depth Depth: Detailed, step-by-step explanations suitable for individuals with basic mechanical knowledge, covering technical information for 100% condition restoration. Diagnostic Level: Provides specific diagnostic information for identified issues, such as ignition problems and smoking. Illustration Quality: Emphasis on 'depth illustrations' suggests detailed visual guides for complex procedures. Level Of Detail: Covers technical specifications to a depth that allows for precise adjustments and repairs, ensuring '100% condition'. 📊 Manual Specifications File Format Format Details: Likely digital image scans or PDF documents, potentially searchable depending on the source. Searchability: PDF format may offer search functionality if created from OCR-scanned documents. Print Quality Quality Description: Quality may vary based on original source material; expect clear text and diagrams for technical information. Binding Type Binding: Not applicable for digital format; if printed, typically bound or stapled. Paper Type Paper: Not applicable for digital format; historically, service bulletins were printed on standard paper stock. ⚙️ Engine Specifications Primary Engine Engine Details: Covers a range of AJS single-cylinder engines (e.g., G2, G2CS, G80CS, G80TCS, G9, G12, G12CS) with varying displacements. Specific engine details like bore, stroke, compression ratios are found within individual bulletins (e.g., 6-80 covers cylinder and piston dimensions for G2, G9, G12, G80). Engine Design: Primarily single-cylinder OHV (Overhead Valve) designs typical for AJS motorcycles of that period, often with pushrod valve actuation. Performance Performance Enhancements: Includes information related to competition tuning, gear ratios for road use, and potential performance improvements through correct lubrication and ignition timing. Tuning Considerations: Bulletins like 4-56 'Competition singles' and those addressing inlet cams and torque settings highlight performance tuning aspects. Fuel System Fuel System Type: While not explicitly detailed, ignition and lubrication are covered, implying standard carburetor and ignition systems for the era. Inlet cam specifications for scrambles models suggest performance tuning aspects. Engine Details Engine Variants Covered: Single-cylinder engines ranging from approximately 250cc (G2) to 650cc (G80 models, 650 scrambles). 🔧 Transmission Standard Transmission Type: Various gearbox configurations for AJS single-cylinder motorcycles, with specific mentions of G2CS transmission and gear ratios for road use. Optional Transmission Features: Service Bulletin 6-66 details gear ratios for road use, suggesting potential variations or recommended changes for different applications. Transmission Upgrades: Gear ratio changes (6-66) suggest potential upgrades or alternatives for different riding styles or competition requirements. Features Transmission Testing: Service Bulletin 6-77 mentions 'G2CS transmission test lab,' indicating specific diagnostic and performance testing procedures. Gearbox Variations: Information on gear ratios for road use implies that different gearbox options or modifications may have been available or recommended. 📐 Dimensions Exterior Model Variations: Covers multiple AJS models (G2, G9, G12, G80) which would have...