🏷️ Basic Information Identification Make: Harley-Davidson Model: FL/FLH Duo-Glide Generation: Panhead Era Model Code: FL (Standard), FLH (Hydraulic Covered Years: 1958, 1959, 1960, 1961, 1962, 1963, 1964 👋 Introduction Market Position Vehicle Segment: Full-size Cruiser / Touring Motorcycle Target Audience: Harley-Davidson owners, independent mechanics, motorcycle restoration enthusiasts Competitive Analysis Competitors Era: Indian Chief, Triumph Bonneville, BSA models, other large displacement V-twins of the period Key Features Manual Value Proposition: Comprehensive, factory-authorized repair information for essential maintenance and complex repairs, ensuring authenticity and correctness Vehicle Key Selling Points: Iconic Panhead V-twin engine, Duo-Glide suspension, classic styling, robust build quality 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Workshop Manual Language: English Format: PDF (Downloadable) Distribution Type: Instant Digital Download Licensing: Lifetime Use, No Expiry, No Renewal Fees Device Compatibility: Computers (Windows & MAC), Tablets, Smartphones Printing Capability: Printable (Single pages or entire manual) 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly, assembly, tuning, lubrication, cooling, ignition system, fuel system (carburetor rebuilding), valve train Transmission Systems: Gearbox disassembly, assembly, clutch operation, lubrication, shift mechanism Chassis Systems: Frame inspection and repair, suspension (forks, shock absorbers), steering, wheels, bearings Brake Systems: Brake mechanisms (drum brakes), hydraulic system (for FLH), adjustments, component replacement Electrical Systems: Wiring diagrams, lighting, ignition coil, battery, generator, starter motor, horn, switches Fuel System: Carburetor model identification, adjustment, cleaning, fuel tank, fuel lines Bodywork And Trim: Fenders, fuel tank, seat mounting, saddlebags (if applicable), fairings (if applicable) Procedures Included Maintenance: Regular servicing, oil changes, filter replacements, lubrication points, ignition timing, carburetor adjustments, brake checks Troubleshooting: Diagnostic flowcharts, common problems and solutions, symptom-based troubleshooting Repair: Component overhaul, part replacement, engine rebuilding, transmission repair, electrical diagnostics and repair Installation: Component installation, accessory fitting (where documented in factory procedures) Overhaul: Complete engine teardown and rebuild, transmission overhaul, carburetor overhauls Technical Depth Diagnostic Capabilities: Advanced diagnostics with detailed troubleshooting guides and wiring diagrams Rebuild Level: Full engine and transmission rebuild procedures, including torque specifications and clearances Detail Level: Hundreds of pages with detailed photos, diagrams, and step-by-step instructions Exploded Diagrams: High-detail exploded views for accurate part identification and reassembly 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchability: Likely text-searchable PDF (standard for factory manuals) Print Quality Resolution: High resolution suitable for clear printing of text and diagrams Scalability: Scalable to view fine details in diagrams Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, 45-degree V-twin Engine Family: Panhead (OHV - Overhead Valve) Displacement: 74 cubic inches (1213 cc) Bore X Stroke: Approx. 3.4375 in x 4.25 in (87.3 mm x 108 mm) - *Specifics may vary slightly by exact model year within the range* Valve Train: Overhead Valves (OHV), pushrod actuated Performance Horsepower: Approx. 60-65 HP (estimated for the era, not directly comparable to modern metrics) Torque: Significant low-end torque, characteristic of large displacement V-twins Fuel System Carburetor: Linkert M-Series (e.g., M-35, M-45) or aftermarket alternatives common Fuel Type: Leaded gasoline (common for the era), though unleaded can be used with precautions and additives Lubrication System Oil System: Total Loss Lubrication System (oil is consumed and expelled via crankcase breather) Oil Capacity: Approx. 3-4 quarts (US) - *Refer to manual for exact capacity and type* 🔧 Transmission Standard Transmission Type: 4-speed constant mesh manual transmission Clutch Type: Dry multi-plate clutch Features Gear Selection: Foot-shifted (right side shift lever, heel-toe or toe-toe operation typical) Drive Type: Belt drive (primary drive from engine to transmission), Chain drive (secondary drive from transmission to rear wheel) 📐 Dimensions Exterior Wheelbase: Approx. 59.5 inches (1511 mm) - *Subject to minor variations* Length: Approx. 87 inches (2210 mm) - *Subject to minor variations* Weights Dry Weight: Approx. 530-570 lbs (240-260 kg) - *Depending on FL vs FLH and accessories* Gross Vehicle Weight Rating: Not typically specified in the same manner as modern vehicles; rider and load capacity are key 🛡️ Safety Features Ratings Crash Safety: N/A (Motorcycle safety standards were nascent; focus on rider skill and machine maintenance) Active Features Braking System: Drum brakes (front and rear). FLH models featured hydraulic actuation on the rear brake for the first time in Harley-Davidson history. Suspension Type: Telescopic front forks (leading axle), Swingarm rear suspension with hydraulic shock absorbers (Duo-Glide system) Passive Features Lighting: Headlight, taillight, brake light, turn signals (optional or standard depending on market and year) 💡 Technology Features Infotainment Infotainment System: N/A (No integrated infotainment system; focus on mechanical and electrical systems) Driver Assistance Driver Assistance Features: N/A (No electronic driver assistance features) Connectivity Connectivity Options: N/A (No electronic connectivity) 🔧 Maintenance Service Intervals Initial Service: First service typically around 500-1000 miles, involving engine oil change, primary chain adjustment, and thorough inspection. Regular Oil Change: Every 1000-2000 miles or annually for the total-loss system, depending on usage and oil condition....