🏷️ Basic Information Identification Make: Harley-Davidson Model: FXWG Year: 1981 Engine Family: Shovelhead Codes Engine Code Prefix: FXWG 👋 Introduction Market Position Target Audience: Harley-Davidson FXWG Shovelhead 1981 owners, enthusiasts, and independent mechanics seeking authentic factory service information. Competitive Analysis Manual Type Comparison: Actual Genuine Factory Service Manuals, not third-party or aftermarket guides, offering superior accuracy and comprehensiveness. Key Features Value Proposition: Enables owners to perform their own servicing and repairs, saving significant labor costs ($50-$60 per hour) and empowering informed decision-making with mechanics. Content Attributes: Detailed substeps, notes, cautions, warnings, numbered instructions, bold figure numbers, detailed illustrations, drawings, photos, and enlarged insets. User Guidance: Designed to guide owners through maintenance and repair, teaching what factory-trained technicians know, enabling informed decisions about vehicle upkeep. Practical Application: Offers practical advice, common tips to prevent issues, and guidance on understanding and communicating with mechanics. 📋 Manual Details Coverage Areas Covered Styles: All Styles Covered Page Count Estimated Page Count: Hundreds of Pages Manual Type Type: Factory Service Repair Manual Source Authenticity: Genuine Factory Service Manuals, ensuring accuracy and completeness over aftermarket alternatives. Language Language: English Format Format: PDF Download File Format File Size Consideration: Downloadable, allowing saving to hard drive or burning to CD-ROM. High resolution for clear viewing and printing. 📖 Manual Coverage Systems Covered Engine And Powertrain: Engine, Clutch, Primary Drive, Transmission, Kickstarter Fuel And Exhaust: Fuel System, Exhaust Systems Electrical And Ignition: Electrical System, Wiring Diagrams Chassis And Suspension: Front Suspension, Steering, Rear Suspension, Brakes General And Diagnostics: General Information, Troubleshooting, Periodic Lubrication, Maintenance, Tune-up Engine Management: Understanding and analyzing different engine management systems (ignition timing, carburetor calibration). Procedures Included Diagnostic Procedures: Engine Fault Symptom Diagnosis, Advanced Troubleshooting Guide, Diagnosing and Correcting Problems Repair Procedures: Step-by-step Repair Procedures, Detailed Substeps, Common Fixes Maintenance Procedures: Periodic Lubrication, Maintenance Schedules, Routine Servicing Electrical Procedures: Tracing and Verifying Wiring Diagrams, Electrical System Service Procedures Troubleshooting Methodology: Provides structured troubleshooting guides to diagnose engine faults, electrical issues, and mechanical problems, including 'secret techniques used by top mechanics'. Technical Depth Depth: Complete factory service and repair for all aspects of the vehicle, including advanced diagnostics and rebuilds. Comparable to what professional technicians use. Diagnostic Tools: Covers the use of basic diagnostic tools and techniques necessary for on-bike repairs and troubleshooting. 📊 Manual Specifications File Format Format: PDF Compatibility: Compatible with all PC-based Windows operating systems and Mac. Print Quality Printability: Printable without any restriction; individual pages or entire manual can be printed. Binding Type Binding: Digital download; user can print and bind as desired. Paper Type Paper Type: Not Applicable (Digital Download) Software Requirements Reader Requirement: Adobe PDF Reader Searchability Text Search: Searchable content for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, 45-degree V-twin Engine Family: Shovelhead Displacement Cc: 1338 cc Displacement Ci: 82 cu in Bore X Stroke In: 3.4375 in x 4.25 in Performance Horsepower Estimated: Approximately 50-60 HP (model dependent, not explicitly stated but typical for the era/engine) Torque Estimated: Approximately 65-75 lb-ft (model dependent, not explicitly stated but typical for the era/engine) Fuel System Carburetor: Typically a Keihin butterfly carburetor (e.g., CV Carburetor) or equivalent Mikuni/S&S options depending on specific build or modifications. Manual would detail factory spec. Fuel Delivery: Gravity feed from fuel tank to carburetor. Carburetor Details: Specific procedures for adjustment, cleaning, and rebuilding of the factory carburetor. Engine Components Valve Train: Details on valve adjustment, timing, and related components. 🔧 Transmission Standard Type: 4-speed constant mesh, right-side drive Features Clutch Type: Wet, multi-plate Primary Drive: Duplex chain in oil bath Kickstarter System: Complete instructions for the operation, maintenance, and repair of the kickstarter mechanism. 📐 Dimensions Exterior Wheelbase In: Approx. 63.2 inches (varies slightly by specific FXWG variant) Weights Dry Weight Lbs: Approx. 600-650 lbs (typical for FXWG models of this era) 🛡️ Safety Features Active Features Braking System: Front and Rear Disc Brakes (specifics covered in manual) Passive Features Lighting: Standard headlamp, tail lamp, brake lamp, turn signals (details in electrical section). 💡 Technology Features Infotainment Features: Basic for its era, primarily focused on essential instrumentation: speedometer, odometer, engine oil pressure light, neutral indicator, and possibly a voltmeter. No advanced infotainment systems present. Driver Assistance Features: No electronic driver assistance features typical of modern vehicles. Relies on rider skill and mechanical integrity. Connectivity Features: No onboard connectivity or communication systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 2,000-3,000 miles or annually, as detailed in the manual. Tune Up Interval: Recommended at regular intervals, often tied to mileage (e.g., every 5,000 miles) or annually, covering spark plugs, ignition timing, and carburetor adjustments. Fluid Specifications Engine Oil Type: The manual will specify the recommended SAE viscosity grade (e.g., SAE 20W-50 or SAE 50) and type (e.g., API SF or SG service classification or equivalent motorcycle-specific oil). Primary Chain Case Fluid: The manual...