The 1980 FLH Shovelhead represents a significant chapter in American motorcycle history, embodying the raw power and classic styling that defines the brand. As a touring motorcycle equipped with the iconic Shovelhead V-Twin engine, this model was engineered for long-distance journeys, offering a distinctive riding experience. Its robust construction and the legendary rumble of its air-cooled, 45-degree V-twin engine have made it a sought-after machine for enthusiasts and collectors alike. The FLH designation signifies a touring variant, built upon a lineage that stretches back through a rich heritage, making the 1980 model a testament to enduring design and performance. This comprehensive service and repair manual provides in-depth guidance for the 1980 FLH Shovelhead, covering all styles and encompassing hundreds of pages of detailed information. It serves as an essential resource for owners and independent repair shops, offering a cost-effective alternative for maintenance and repairs. The manual details every aspect of the motorcycle, from complete engine disassembly and electrical system troubleshooting to drivetrain maintenance, suspension adjustments, and brake system service. With step-by-step instructions, diagnostic procedures, and hundreds of illustrations, this manual empowers users to effectively maintain, repair, and understand their FLH Shovelhead, ensuring its continued performance and reliability. 🏷️ Basic Information Identification Make: Harley-Davidson Model: FLH Shovelhead Year: 1980 Model Code: FLH Engine Type: Shovelhead V-Twin Chassis Type: Touring Motorcycle Codes Vin Code Engine: 1980 models generally start with 9F 👋 Introduction Market Position Target Audience: Harley-Davidson FLH Shovelhead owners and independent repair shops Competitive Analysis Value Proposition: Cost-effective alternative to official dealerships for maintenance and repairs, comprehensive DIY resource Key Features Convenience: Instant PDF download, no shipping costs or waiting time Completeness: Official factory data, covering all aspects of the 1980 FLH Shovelhead 📋 Manual Details Coverage Areas All Styles Covered: True Page Count Estimated Page Count: Hundreds Manual Type Type: Official Factory Service & Repair Manual Language Language: English Format File Format: PDF Digital Delivery: Downloadable 📖 Manual Coverage Systems Covered Engine Service: Complete disassembly and reassembly, component diagnostics, internal adjustments Electrical System: Wiring diagrams, troubleshooting, component testing, ignition system, lighting Fuel System: Carburetor service and adjustment, fuel lines, fuel pump (if applicable) Drivetrain: Clutch operation and service, primary drive maintenance, transmission overhaul and repair Suspension Steering: Front fork service, rear shock absorber replacement, steering head bearing adjustment Brakes: Brake system inspection, service, and component replacement (hydraulic or mechanical) Exhaust Systems: Exhaust pipe and muffler inspection and service Kickstarter: Kickstarter mechanism service and repair Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements Tune Up: Ignition timing, carburetor adjustments, spark plug service Troubleshooting: Diagnostic procedures for common and uncommon issues, fault finding Repair: Step-by-step instructions for component repair and replacement Disassembly Reassembly: Complete guide to taking apart and putting back together all major vehicle systems Technical Depth Depth Of Information: Comprehensive, from basic maintenance to complete engine rebuilds Illustration Quality: Hundreds of photos and illustrations, detailed drawings, enlarged insets Guidance Level: Suitable for DIY enthusiasts and experienced mechanics alike Navigability: Numbered instructions, bold figure numbers, numbered table of contents, index 📊 Manual Specifications File Format File Type: PDF Software Requirement: Adobe PDF Reader Print Quality Printability: Printable without restriction, entire manual or specific pages Binding Type Binding Style: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Configuration: Air-cooled, 45-degree V-twin Displacement: 73.7 ci (1207 cc) Bore X Stroke: 3.4375 in x 4.25 in (87.3 mm x 108 mm) Compression Ratio: Approximately 8.0:1 (varies slightly) Performance Horsepower Estimate: 60-70 HP (approximate, varies with tuning) Torque Estimate: 70-80 lb-ft (approximate, varies with tuning) Fuel System Carburetor Type: Keihin Butterfly (e.g., CV or Linkert, depending on specific build) Fuel Type: Unleaded gasoline (91 octane or higher recommended) 🔧 Transmission Standard Transmission Type: 4-speed constant mesh, foot-shift, hand-clutch Optional Optional Transmission: N/A for 1980 FLH model Features Clutch Type: Wet multi-plate, diaphragm spring 📐 Dimensions Exterior Wheelbase: Approx. 63.5 inches (1613 mm) Weights Dry Weight: Approx. 650-700 lbs (295-318 kg) Gross Vehicle Weight Rating: Approx. 1000 lbs (454 kg) 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety standards of the era) Active Features Braking System: Front disc brake, rear drum brake (typical for 1980 FLH) Passive Features Lighting: Headlight, tail light, brake light, turn signals 💡 Technology Features Infotainment Infotainment System: N/A (Classic motorcycle design predates modern infotainment) Driver Assistance Driver Assistance: N/A (Classic motorcycle design predates modern driver assistance systems) Connectivity Connectivity Options: N/A (Classic motorcycle design predates modern connectivity) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 2,000-3,000 miles (refer to manual for exact specifications) Primary Chain Adjustment: As needed, typically every 5,000-10,000 miles Tune Up Interval: Recommended annually or every 5,000 miles Fluid Specifications Engine Oil Type: Viscosity: 20W50 (e.g., Harley-Davidson Classic V-Twin, Mobil 1 V-Twin) Engine Oil Capacity: Approx. 3 quarts (2.8 liters) Primary Chain Case Oil: Harley-Davidson Primary...