🏷️ Basic Information Identification Make: Harley-Davidson Model: FXWG Year: 1981 Engine Family: Shovelhead Codes Vin Designator: 1H 👋 Introduction Market Position Target Audience: DIY enthusiasts and experienced mechanics Competitive Analysis Advantage Over Print: Lower cost, convenience of digital access, selective printing Key Features Content Detail: Hundreds of photos and illustrations Cost Effectiveness: Inexpensive way to maintain vehicle, saves on mechanic costs 📋 Manual Details Coverage Areas Coverage Scope: Complete Factory Service and Repair Styles Covered: All Styles Page Count Estimated Pages: Hundreds Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Maintenance: General Information, Tune-up, Engine, Fuel System, Exhaust Systems Drivetrain Maintenance: Clutch, Primary Drive, Transmission, Kickstarter Chassis Maintenance: Front Suspension, Steering, Rear Suspension, Brakes Electrical Maintenance: Electrical System, Wiring Diagrams Frame And Body: Bodywork, fenders, fuel tank, seating Procedures Included Repair Procedures: Step-by-step instructions for complete disassembly and reassembly Troubleshooting: Dedicated troubleshooting section Maintenance Tasks: Periodic Lubrication, Maintenance Diagnostic Procedures: Troubleshooting guides for various systems Technical Depth Depth: Comprehensive (from basic maintenance to advanced repair) Illustrations Photos: Includes hundreds of photos and illustrations to aid in repair 📊 Manual Specifications File Format File Type: Adobe PDF Searchable: Likely searchable within PDF viewer Download Speed: Speed Download Digital Rights: No expiry dates Print Quality Printability: Fully printable (individual pages or entire manual) Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) Compatibility Operating Systems: Windows (all versions), Mac, Smartphones, Tablets (via web browser or PDF reader) Software Requirements Required Software: Adobe PDF Reader, Winzip (free) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled V-twin OHV Engine Displacement: Approximately 74 cu in (1200cc) or 80 cu in (1340cc) for Shovelhead Performance Horsepower: Estimated 50-60 HP (varies by specific tuning and configuration) Torque: Estimated 65-75 ft-lbs (varies by specific tuning and configuration) Fuel System Carburetor: Typically a Keihin butterfly carburetor (e.g., 36mm or 40mm) or S&S carburetor Fuel Type: Unleaded gasoline (Octane rating suitable for the engine design) 🔧 Transmission Standard Transmission Type: 4-speed constant mesh manual transmission Optional Optional Transmission: N/A for this specific model year and manual Features Clutch Type: Wet multi-plate clutch Primary Drive Type: Primary chain drive to transmission 📐 Dimensions Exterior Wheelbase: Approximately 63.5 inches (1613 mm) Length: Approximately 92 inches (2337 mm) Weights Dry Weight: Approximately 570 lbs (258 kg) Gross Vehicle Weight Rating: Typically around 900 lbs (408 kg) 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety ratings not standardized in the same way as automobiles) Active Features Braking System: Front and rear disc brakes Passive Features Lighting: Headlight, taillight, brake light, turn signals 💡 Technology Features Infotainment Infotainment Features: N/A (This era of motorcycle primarily focused on mechanical operation) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 2,000-3,000 miles or annually, whichever comes first (refer to manual for specifics) Primary Chain Tensioner Check: Regular checks recommended (often at oil changes) Fluid Specifications Engine Oil Type: Viscosity typically 20W-50 or 10W-40, API SG or higher (consult manual for exact specification) Transmission Oil Type: Typically Harley-Davidson Formula + or equivalent (API GL-1 or GL-4) Primary Drive Oil Type: Typically Harley-Davidson Formula + or equivalent (API GL-1 or GL-4) Brake Fluid Type: DOT 3 or DOT 4 (ensure compatibility with system seals) Known Issues Known Issues Common: Shovelhead engines can be prone to oil leaks, heat management, and timing chain wear. Primary chain tensioner adjustment is crucial. Electrical System Considerations: Older electrical systems may require attention to wiring integrity and charging system components. 📚 Vehicle History Brand Heritage Heritage: Harley-Davidson, established 1903, iconic American motorcycle manufacturer Model Evolution Fxwg Context: The FXWG (Wide Glide) was a popular cruiser model known for its raked-out front end and custom styling. Production Shovelhead Era: The Shovelhead engine was produced from 1966 to 1984, with 1981 being a late-production year. Manufacturing Location: United States 🏆 Awards & Recognition Recognitions Recognitions: N/A (Manual itself does not receive awards, but the model is a collector's item)