🏷️ Basic Information Identification Make: Harley-Davidson Model: FL/FLH Duo-Glide Engine Type: 74 OHV Panhead Production Years Covered: 1958-1964 Codes Engine Code Family: Panhead Generation Generation Identifier: Duo-Glide Era 👋 Introduction Market Position Target Audience: Harley-Davidson owners and independent repair shops specializing in vintage motorcycles. Competitive Analysis Manual Value Proposition: Most comprehensive and cost-effective service manual available for this model range, replicating shop-level repair capabilities. Key Features Content Comprehensiveness: Covers all models, engines, trim, and transmission types within the specified year range. Repair Simplicity: Designed for ease of use with step-by-step instructions and exploded views. Safety Emphasis: Highlights the importance of regular maintenance for safe operation. 📋 Manual Details Coverage Areas Primary Coverage: Service, Maintenance, and Repair Included Models: FL, FLH Included Engine Variants: 74 OHV Panhead (all variants) Included Transmission Types: All types Page Count Estimated Page Count: N/A (Digital Product) Manual Type Manual Type: Professional Service & Repair Manual Language Language: English Format File Format: PDF/ZIP Delivery Method: Electronic (Email) 📖 Manual Coverage Systems Covered Engine: Comprehensive Engine Overhaul, Tuning, and Reassembly Engine Electrics: Ignition System, Charging System, Lighting Circuits Fuel System: Carburetor Service (e.g., Linkert), Fuel Tank, Fuel Lines, Fuel Pump Exhaust System: Exhaust Pipes, Mufflers, Mounting Hardware Clutch: Clutch Operation, Adjustment, and Rebuild Transmission: Gearbox Overhaul, Shifting Mechanisms, Lubrication Front Suspension: Front Fork Service, Oil Replacement, and Seal Replacement Steering: Steering Head Bearings Adjustment and Service Rear Drive: Primary Chain, Rear Belt, Sprockets, and Drive Chain (if applicable) Brakes: Drum Brake Service, Adjustment, Bleeding (if applicable), Pad/Shoe Replacement Wheels Tires: Wheel Bearing Service, Tire Mounting and Balancing, Wheel Truing Frame: Frame Inspection, Engine Mounts, Chassis Lubrication Points Equipment: Seat Mounting and Adjustment, Foot Controls, Handlebars Electrical Equipment: General Wiring, Headlight Alignment, Instrument Cluster Instruments: Speedometer, Tachometer (if equipped), Indicator Lights Lights: Headlight, Taillight, Turn Signals (if equipped), Brake Light Procedures Included Maintenance Schedule: Detailed Intervals for Regular Service Operations Pre Delivery Check: Pre-Sale Inspection and Preparation Procedures General Instructions: Safe Workshop Practices and General Repair Guidelines Troubleshooting: Diagnosing and Resolving Common Issues Disassembly Assembly: Step-by-step instructions with exploded views for component removal and installation Tuning Adjustment: Engine timing, carburetor adjustments, brake adjustments, clutch adjustments Fluid Management: Oil changes, lubrication schedules, fluid capacity specifications Electrical Diagnostics: Troubleshooting electrical faults using wiring diagrams Storage Procedures: Proper procedures for long-term vehicle storage Technical Depth Depth Of Coverage: Comprehensive: from routine maintenance to major engine and transmission rebuilds. Diagnostics: Detailed troubleshooting guides for identifying and rectifying faults. Illustrations: Includes exploded views for clear understanding of component relationships. Specificity: Covers specific procedures like primary chain case lubricant checks, rear belt deflection, and front fork oil changes. 📊 Manual Specifications File Format File Type: PDF/ZIP Print Quality Printability: Yes, all pages are printable. Digital Quality: High-quality digital reproduction of original service information. Binding Type Binding: N/A (Digital Product) Paper Type Paper Type: N/A (Digital Product) Compatibility Operating Systems: Windows, Mac, Linux OS ⚙️ Engine Specifications Primary Engine Engine Family: Panhead Engine Configuration: V-Twin, Overhead Valve (OHV) Displacement: 74 cubic inches (approx. 1200cc) Performance Horsepower: Typically in the range of 50-60 HP (Varies by specific tune and year) Torque: Approx. 65-75 lb-ft (Varies by specific tune and year) Fuel System Carburetor Type: Likely Harley-Davidson Linkert, potentially others depending on year and specific model Fuel Type: Leaded gasoline (typical for era), may require additives for modern unleaded Ignition System Ignition Type: Contact Breaker Points, Battery and Coil Ignition Lubrication Oil System Type: Total Loss or Recirculating with oil tank Cooling Cooling Method: Air Cooled 🔧 Transmission Standard Transmission Type: 4-Speed Constant Mesh Optional Optional Features: Foot shift, hand clutch operation Features Gear Ratios: Detailed within manual (specific ratios vary) Primary Drive: Primary chain drive to transmission Final Drive: Belt Drive Lubricant Transmission Fluid Spec: Refer to manual for specific gear oil viscosity (e.g., Harley-Davidson Genuine Transmission Fluid or equivalent GL-80/90). 📐 Dimensions Exterior Wheelbase: Refer to specific model year specifications within manual. Seat Height: Refer to specific model year specifications within manual. Weights Dry Weight: Approx. 500-550 lbs (varies by model FL vs FLH and accessories) 🛡️ Safety Features Ratings Safety Ratings: N/A (Vehicle not subject to modern safety rating systems) Active Features Active Safety: Drum Brakes (Front and Rear), Effective Suspension System Passive Features Passive Safety: Robust Frame Construction Warnings Maintenance Warning: Lack of regular maintenance can affect safe operation, potentially resulting in death or serious injury. 💡 Technology Features Infotainment Infotainment System: N/A (No integrated infotainment systems on this model) Driver Assistance Driver Assistance Features: N/A (No driver assistance features) Connectivity Connectivity Options: N/A (No connectivity features) Lighting Technology Headlight Type: Halogen (typically sealed beam unit) 🔧 Maintenance Service Intervals General Maintenance Schedule: Detailed in the Maintenance Schedule section, covering regular service intervals. Engine Oil Change: Refer to manual for specific mileage/time intervals, typically based on usage. Transmission Fluid Change: Refer to manual...