This manual covers the 1979 motorcycles, powered by a 1000cc V-Twin, air-cooled engine. As part of the legendary Sportster line, these models are recognized for their classic American styling and the robust performance characteristic of the Shovelhead Evolution engine. This generation of Sportsters, produced from 1957 through 1985, offers a direct and engaging riding experience, embodying a rich heritage established in 1903. The XLH and XLCH variants represent iconic machines from a pivotal era in motorcycle manufacturing, celebrated for their distinctive character and enduring appeal among enthusiasts. This comprehensive service manual provides detailed information for the maintenance, repair, and restoration of your 1979 motorcycle or . It covers all major systems, including the engine, transmission, electrical components, and chassis, offering step-by-step procedures, diagnostic guides, and technical specifications. With factory-level detail and clear, illustrated instructions, this manual is an essential resource for DIY owners, home mechanics, and professional technicians alike. Its scope includes everything from routine maintenance and fluid changes to complete engine rebuilds and troubleshooting common issues, empowering users to maintain their motorcycles with confidence and precision. 🏷️ Basic Information Identification Make: Harley-Davidson Model: XLH / XLCH Year: 1979 Engine Type: V-Twin, Air-Cooled Engine Displacement: 1000cc (1.0 Liters) Generation Model Generation: Iron Sportster Evolution Codes Vin Code Engine: Engine Type: XLCH (Sportster), XLH (Sportster Deluxe) 👋 Introduction Market Position Target Audience: DIY motorcycle owners, home mechanics, professional technicians, and restoration enthusiasts. Competitive Analysis Value Proposition: Provides professional-grade repair and maintenance information at a fraction of the cost of dealership service, empowering owners to perform their own work. Key Features Manual Attribute 1: Factory-level detail and accuracy. Manual Attribute 2: Comprehensive troubleshooting assistance. Manual Attribute 3: Clear, step-by-step instructions with illustrations. Manual Attribute 4: Instant digital access and storage flexibility. 📋 Manual Details Coverage Areas Service Scope: Comprehensive service, repair, restoration, maintenance, and troubleshooting for the 1979 Harley-Davidson XLH and XLCH 1000 motorcycles. Page Count Total Pages: 150+ Manual Type Manual Classification: Service Manual / Workshop Manual / Repair Guide / Factory Manual Language Language Of Manual: English Format Delivery Format: PDF Download (potentially zipped/rar) 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly, assembly, tuning, carburetor (CV & other variants), ignition system, lubrication system, cooling system (air). Transmission Systems: Gearbox disassembly, assembly, shifting mechanisms, clutch operation, lubrication. Electrical Systems: Wiring diagrams, lighting, ignition coils, starter motor, battery, charging system, switches, controls. Chassis Systems: Frame, suspension (front forks, rear shocks), wheels, tires, brakes (front & rear), steering head, swingarm. Miscellaneous Systems: Bodywork, fuel tank, seat, fenders, exhaust system, controls (throttle, clutch, brake levers), instrument cluster. Procedures Included Maintenance Procedures: Oil changes, filter replacement, chain adjustment, spark plug maintenance, brake adjustments, lubrication points. Repair Procedures: Engine rebuilding, gearbox overhauls, carburetor rebuilding, electrical component replacement, brake system repairs, suspension component replacement. Troubleshooting Guides: Step-by-step diagnostic procedures for common and uncommon issues, including starting problems, running issues, electrical faults, and performance issues. Technical Depth Diagnostic Capabilities: Advanced diagnostics, component testing, and fault identification for all major motorcycle systems. Rebuild Complexity: Detailed instructions for complete engine and transmission rebuilds, including torque specifications and assembly sequences. Restoration Guidance: Information pertinent to restoring the motorcycle to original specifications, including component identification and service details. 📊 Manual Specifications File Format Document Format: PDF File Compression: May be zipped (.zip, .rar) Print Quality Printable Pages: Yes, printable on any computer and printer. Image Quality: Illustrated with clear step-by-step instructions, zoomable illustrations, and exploded views. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Name: Shovelhead Evolution (early variant) Bore X Stroke: 3.1875 in. x 3.875 in. (81 mm x 98.4 mm) - Approximate for 1000cc Compression Ratio: Approx. 8.0:1 (varies by specific model/tune) Valve Train: OHV (Overhead Valve), 2 Valves per Cylinder Performance Horsepower Approximate: Approx. 60-65 HP @ 6000 RPM Torque Approximate: Approx. 70-75 ft-lbs @ 3500 RPM Fuel System Carburetor Type: Typically Keihin butterfly (CV) or Linkert, depending on specific sub-model and market. Fuel Type: Unleaded gasoline (minimum 87 octane recommended, higher if available/specified). Fuel Tank Capacity: Typically 2.0 - 2.5 Gallons (7.6 - 9.5 Liters) 🔧 Transmission Standard Transmission Type: 4-Speed Manual Constant Mesh Clutch Type: Wet, Multi-plate Features Drive Type: Belt Drive (Primary), Chain Drive (Final) 📐 Dimensions Exterior Wheelbase: Approx. 58.5 inches (1486 mm) Weights Dry Weight: Approx. 490-500 lbs (222-227 kg) Gross Vehicle Weight Rating: Approx. 800 lbs (363 kg) 🛡️ Safety Features Ratings Safety Standards: As per relevant national motorcycle safety regulations of the era; no standardized crash ratings like modern cars. Active Features Braking System: Front: Hydraulic Disc; Rear: Drum Brake (typically) Passive Features Lighting System: Headlight, Taillight, Stop Light, Turn Signals (if equipped), Brake Light. 💡 Technology Features Infotainment Infotainment Features: N/A (Basic motorcycle instrumentation: speedometer, odometer, neutral indicator, oil pressure light). Driver Assistance Assistance Features: N/A (No electronic rider...