🏷️ Basic Information Identification Make: Harley-Davidson Model: Duo-Glide Years Covered: 1958-1959 Product Name: Harley Davidson Duo Glide 1958-1959 Factory Service Repair Manual 👋 Introduction Market Position Market Position: Essential resource for owners and mechanics of the iconic Harley-Davidson Duo-Glide, offering comprehensive factory-level repair and maintenance information. Key Features Key Features: Comprehensive coverage, easy information location via table of contents, detailed troubleshooting guidance, cost-saving repair insights. Competitive Analysis Competitive Analysis: Competed with other American and European touring motorcycles of the era, but its V-twin character and Harley-Davidson legacy offered a distinct experience. Value Proposition Value Proposition: Empowers owners to perform repairs and maintenance, saving significant costs compared to professional servicing and fostering a deeper connection with their classic motorcycle. Target Audience Target Audience: Harley-Davidson Duo-Glide owners, restoration enthusiasts, classic motorcycle mechanics, and vintage motorcycle collectors. Historical Significance Historical Significance: Represents a key period in Harley-Davidson's development, bridging the gap to later models and retaining the classic Panhead engine era charm. 📋 Manual Details Coverage Coverage Areas: Comprehensive service and repair for Harley-Davidson Duo Glide models 1958-1959, including all innovative features. Format Manual Type: Factory Service Repair Manual, Shop Manual, Troubleshooting Guide File Format: PDF Language Language: English Quality Manual Quality: Factory authorized information ensuring accuracy and completeness. Additional Formats Downloadable Options: Available as PDF download, encompassing service, repair, and troubleshooting guides. Availability Availability: Digital download format. 📖 Manual Coverage Systems Covered Systems Covered: Engine, Transmission, Drivetrain, Fuel System, Ignition System, Electrical System, Chassis, Suspension, Brakes, Bodywork, Controls, Special Features (e.g., Duo-Glide suspension components). Procedures Included Procedures Included: Maintenance schedules, troubleshooting, repair procedures, disassembly and assembly, diagnostics, component testing, wiring diagrams, specifications, adjustments. Technical Depth Technical Depth: In-depth, factory-level detail suitable for professional technicians and experienced DIY enthusiasts. Troubleshooting Troubleshooting Coverage: Detailed symptom-based troubleshooting guides for common and uncommon issues across all major systems. Wiring Wiring Diagrams: Included, often in a dedicated section or fold-out, crucial for electrical system diagnosis and repair. Engine Repair Engine Rebuild Procedures: Complete procedures for engine disassembly, component inspection, honing, piston/ring installation, bearing checks, and reassembly. Electrical System Electrical Diagnostics: Detailed diagnostic procedures for starting system, charging system (generator), lighting, ignition, and accessories. Chassis Suspension Suspension Service: Detailed instructions for front fork disassembly, seal replacement, fluid levels, and rear shock absorber service or replacement. Frame Bodywork Frame And Bodywork Repair: Information on frame inspection, straightening (if applicable), fender mounting, fuel tank attachment, and other body component repairs. Fuel And Exhaust Fuel System Service: Carburetor rebuild kits, fuel line inspection and replacement, fuel tank sealing and cleaning. 📊 Manual Specifications File Attributes File Requirements: Adobe PDF Reader & WinZip Compatibility Operating Systems: All versions of Windows & Mac Usage Accessibility: Downloadable, repair anytime anywhere, convenient with fast downloads. Content Organization Table Of Contents: Incorporated for easy information navigation and location. ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, 45-degree V-twin OHV Displacement: 74 cubic inches (1200cc) Bore X Stroke: 3.4375 in. x 4.00 in. (87.3 mm x 101.6 mm) Fuel System Carburetor: Linkert M-Series (typically M74B or M74) Performance Horsepower Approx: Approx. 50-55 hp (at specified RPM) Torque Approx: Approx. 65-70 ft-lbs (at specified RPM) Engine Internals Valvetrain: Overhead valve (OHV), pushrod actuated. Ignition System Ignition Type: Battery and coil, distributor ignition (contact breaker points). Cooling System Cooling Method: Air-cooled Carburetor Specifications Carburetor Adjustments: Idle speed, air/fuel mixture (idle mixture screw), float level, jetting specifications detailed in manual. Engine Assembly Crankshaft And Connecting Rods: Details on crankshaft runout, bearing play, and connecting rod alignment. 🔧 Transmission Standard Transmission Type: 4-speed constant mesh, foot-shifted, hand-clutched Features Clutch Type: Dry, multi-plate Drive System: Chain drive to rear wheel Transmission Case: Integral to the engine crankcase assembly. Gear Ratios Gear Ratios: Specific ratios are detailed in the manual for each of the 4 gears. Clutch Service Clutch Maintenance: Procedures for clutch plate inspection, adjustment, and replacement. Gearbox Components Gearbox Overhaul: Procedures for disassembly, inspection, and reassembly of the 4-speed gearbox, including gear shafts and shift forks. 📐 Dimensions Weights Dry Weight Approx: Approx. 575-600 lbs (depending on specific configuration) Wheelbase Approx: Approx. 59.5 inches Fuel Capacity: Approx. 4 gallons (15.1 liters) Gross Vehicle Weight Rating: Refer to manual; capacity for rider, passenger, and cargo. Wheels Tires Front Tire Size: Typically 3.50 x 19 inches Rear Tire Size: Typically 4.00 x 18 inches Body Frame Type: Steel, double-cradle Brakes Brake Actuation: Mechanical (cable operated for front, foot lever for rear). 🛡️ Safety Features Passive Features Passive Safety: Robust frame construction, effective braking system for its era (drum brakes front and rear). 💡 Technology Features Infotainment Infotainment System: N/A (Basic analog instrumentation: speedometer, ammeter, oil pressure gauge). Driver Assistance Driver Assistance: N/A (Mechanical focus). 🔧 Maintenance Service Intervals Engine Oil Change: Refer to manual for specific intervals, typically every 1000-2000 miles or annually. Fluid Specifications Engine Oil Type: Mineral-based motorcycle oil, typically SAE...