The 2006 Road King (FLHRC) represents a flagship touring motorcycle, celebrated for its classic styling, comfortable ergonomics, and robust performance. Powered by the iconic Twin Cam 88B V-twin engine, this machine offers a formidable 1450cc displacement, delivering impressive torque for long-distance cruising and relaxed riding. Its engineering quality is evident in its durable steel frame, air-cooled design, and the reliable 6-speed Cruise Drive transmission, making it a favored choice for touring riders and cruising enthusiasts seeking a blend of heritage and capability. This comprehensive Service Repair Manual provides detailed guidance for the maintenance, repair, and troubleshooting of your 2006 Road King. It covers a wide array of systems, including engine overhaul, fuel system diagnostics, ignition, transmission, brakes, suspension, and the electrical system. The manual includes step-by-step procedures for routine maintenance, component repair, and advanced diagnostics, along with essential technical specifications, torque values, and wiring diagrams. This resource is invaluable for owners and technicians aiming to ensure the optimal performance, longevity, and safety of this legendary motorcycle. 🏷️ Basic Information Identification Make: Harley-Davidson Model: Road King Model Code: FLHRC Year: 2006 Vehicle Type: Motorcycle Category: Touring Codes Chassis Vin Prefix: 1HD1 👋 Introduction Market Position Vehicle Segment: Flagship Touring Motorcycle Target Audience: Long-distance touring riders, cruising enthusiasts, and experienced DIY mechanics. Competitive Analysis Key Competitors 2006: Honda Gold Wing, Indian Chief Vintage, Victory Kingpin Tour. Key Features Distinguishing Features: Classic styling, comfortable ergonomics, ample storage (saddlebags), large displacement V-twin engine, highway cruising capability. Manual Value Proposition Benefits For Owner: Empowers owners to perform routine maintenance, diagnose issues, and undertake repairs, saving time and money, and ensuring optimal performance. 📋 Manual Details Coverage Areas Manual Type: Service Repair Manual Language: English Format: Downloadable Digital File Page Count Estimated Page Count: Approximately 600+ Manual Type Authenticity: Original Harley-Davidson Publication 📖 Manual Coverage Systems Covered Engine Overhaul: Complete engine disassembly, inspection, repair, and reassembly for Twin Cam 88B engine. Fuel System: Carburetor (CV 40mm) or Fuel Injection (EFI) system diagnostics, cleaning, and repair, including fuel pump, filter, and lines. Ignition System: Ignition module, spark plugs, coils, and timing adjustment procedures. Transmission: 5-speed Cruise Drive transmission internal inspection, repair, clutch service, and fluid changes. Drivetrain: Belt drive system, primary drive chain adjustment and inspection, and rear final drive belt maintenance. Brakes: Front and rear brake system diagnosis, caliper overhaul, brake line replacement, fluid bleeding, and ABS (if equipped) troubleshooting. Suspension: Front fork (Teardrop style) disassembly, seal replacement, oil level adjustment, and rear shock absorber inspection and replacement. Electrical System: Wiring diagrams, battery maintenance, charging system (stator, regulator), lighting, starter motor, and accessory circuits. Chassis And Frame: Frame inspection, steering head bearing adjustment and replacement, and wheel bearing service. Bodywork And Trim: Fairing, saddlebag, fender, and chrome component removal, installation, and care. Diagnostics: Troubleshooting charts and procedures for common issues and system malfunctions. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain/belt adjustments, brake pad inspection. Component Repair: Detailed steps for repairing or replacing individual components like starter, alternator, fuel pump, brake calipers, etc. Troubleshooting: Systematic approach to diagnosing and resolving performance issues, starting problems, electrical faults, and leaks. Special Tools: Identification and usage instructions for specialized tools required for specific repair procedures. Specifications Data: Torque values, clearances, fluid capacities, and electrical specifications essential for correct assembly. Wiring Diagrams: Comprehensive, color-coded electrical schematics for accurate troubleshooting and repair of electrical systems. Technical Depth Level Of Detail: Comprehensive. Covers everything from basic preventative maintenance to complete engine and transmission rebuilds. Diagnostic Capability: Advanced diagnostics, including specific fault code identification and troubleshooting flows for EFI models. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Searchable text content for quick information retrieval. Print Quality Resolution: High-resolution images and diagrams. Binding Type Original Binding: Spiral-bound or perfect-bound (typical for service manuals). Paper Type Original Paper: Durable, glossy paper stock resistant to shop fluids. ⚙️ Engine Specifications Primary Engine Engine Family: Harley-Davidson Twin Cam 88B Engine Configuration: 45-degree V-twin Displacement: 1450cc (88 cubic inches) Bore X Stroke: 3.75 in. x 4.00 in. (95.25 mm x 101.6 mm) Compression Ratio: 8.8:1 Valve Train: Overhead valves (OHV), pushrod actuated, 2 valves per cylinder Performance Horsepower Est: Approx. 65-70 HP (at crankshaft) Torque Est: Approx. 85-90 ft-lbs (at crankshaft) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) or CV 40mm Carburetor (depending on specific market/variant) Fuel Type: Unleaded Premium Gasoline (91-93 octane recommended) Lubrication Oil Type: Harley-Davidson SYN3 (Synthetic) SAE 20W50 or equivalent motorcycle-specific oil. Oil Capacity W Filter: 3.0 US quarts (2.8 Liters) Cooling Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: 6-speed Cruise Drive (likely for 2006 FLHRC, though earlier models had 5-speed; manual will specify) Features Clutch Type: Wet, multi-plate Fluid Specifications Transmission Oil Type: Harley-Davidson Transmission Fluid or SAE 75W-90 Gear Lubricant (specific type will be detailed in manual). Fluid...