The 450 EXC Six Days is a high-performance enduro motorcycle designed for demanding off-road conditions and competitive events. Covering the model years 2008 through 2011, this Austrian-engineered machine is renowned for its robust build, powerful four-stroke, single-cylinder engine, and specialized 'Six Days' trim, which often includes enhanced components for international enduro racing. Its engineering prioritizes agility, durability, and responsiveness, making it a favored choice among enthusiast off-road riders and enduro competitors seeking a reliable and capable machine. This comprehensive factory service repair manual provides essential information for the maintenance, repair, and troubleshooting of the 450 EXC Six Days. It covers a wide array of systems, including the engine, fuel, ignition, cooling, transmission, clutch, chassis, suspension, brakes, and electrical systems, complete with detailed diagrams and procedures. The manual is structured to assist both owners performing routine maintenance and professional technicians undertaking complex repairs, ensuring the optimal performance and longevity of the vehicle. 🏷️ Basic Information Identification Make: KTM Model: 450 EXC Six Days Model Variant: Six Days Model Years Covered: 2008, 2009, 2010, 2011 Codes Chassis Codes: Likely 450 EXC (specific Six Days variant codes may exist but not explicitly stated in product info) Engine Codes: Likely LC4-based 450cc engine 👋 Introduction Market Position Segment: High-performance Enduro/Off-Road Motorcycle Target Audience: Enthusiast off-road riders, enduro competitors, and experienced dual-sport riders. Competitive Analysis Key Competitors: Husqvarna TE450, Beta RR450, Yamaha WR450F, Honda CRF450X, Suzuki RM-Z450 (off-road variants). Key Features Performance Focus: Designed for demanding off-road conditions, trail riding, and competitive enduro events. Six Days Designation: The 'Six Days' trim typically signifies a model equipped with special features and enhancements for the International Six Days Enduro (ISDE) event, often including upgraded components. 📋 Manual Details Coverage Areas Systems Covered: Engine, fuel system, ignition system, cooling system, transmission, clutch, chassis, suspension (front and rear), brakes (front and rear), electrical system, wiring diagrams, bodywork, wheels, tires, troubleshooting, maintenance. Page Count Page Count: Hundreds (exact count not specified, indicative of a comprehensive manual) Manual Type Manual Type: Factory Service Repair Manual Language Language: English (Assumed, standard for international factory manuals) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, repair, and reassembly of engine components (cylinder, piston, crankshaft, connecting rod, valves, camshafts, etc.). Fuel System: Carburetor (likely Keihin FCR) tuning, cleaning, and overhaul; fuel pump (if applicable for EFI variants); fuel tank and lines. Ignition System: Ignition coil, spark plug, CDI unit troubleshooting and replacement. Cooling System: Radiator, fan, coolant, water pump maintenance and repair. Transmission And Clutch: Gearbox inspection, repair, and lubrication; clutch plate replacement, adjustment, and hydraulic system service. Chassis And Suspension: Frame inspection and repair; front fork (e.g., WP USD) servicing, including oil changes, seal replacement, and adjustments; rear shock absorber (e.g., WP PDS or linkage-based) servicing and adjustment. Brakes: Hydraulic brake system servicing (bleeding, pad replacement, caliper overhaul, master cylinder service) for both front and rear. Electrical System: Complete wiring diagrams, component testing (lights, horn, starter, etc.), battery maintenance, and troubleshooting. Bodywork And Ergonomics: Fairing, seat, fuel tank, handguards, and other body panel removal, installation, and repair. Procedures Included Maintenance Procedures: Routine checks, lubrication points, filter replacements, fluid changes, chain adjustment, and general upkeep. Troubleshooting Guides: Systematic diagnostic procedures for common and uncommon problems, fault finding charts. Overhaul Procedures: Detailed step-by-step instructions for complete engine, transmission, and suspension unit overhauls. Diagnostic Procedures: Methods for identifying component failures and performance issues. Technical Depth Depth Of Information: Comprehensive. Covers basic maintenance to complete engine rebuilds and advanced diagnostics, suitable for both home mechanics and professional technicians. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, designed for clear printing of text and diagrams. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchable Text: Typically yes for factory PDF manuals, enabling quick access to specific information. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, Single-cylinder, Liquid-cooled, SOHC Displacement: 449.3 cc (approx.) Bore X Stroke: Likely 95 mm x 63.4 mm (common for this generation LC4 450) Compression Ratio: Typically around 11.5:1 to 12.0:1 Performance Horsepower Estimated: Approximately 50-55 HP (at crankshaft, may vary slightly by year/tune) Torque Estimated: Approximately 45-48 Nm (at crankshaft, may vary slightly by year/tune) Fuel System Fuel Delivery: Carburetor (Keihin FCR 39 or similar) Fuel Type: Unleaded gasoline, minimum 91 octane Lubrication Oil Type: JASO MA certified motorcycle-specific 4-stroke engine oil, viscosity typically 10W/40 or 15W/50. Oil Capacity: Approximately 1.1 - 1.3 Liters (check manual for exact specification, often shared with transmission oil). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet multi-plate clutch, hydraulically operated Features Gear Ratios: Specific ratios would be detailed in the manual, designed for off-road performance. Final Drive: O-ring sealed chain, typically 520 pitch. 📐 Dimensions Exterior Length: Varies, typically around 2100-2200 mm Width: Varies, typically around 800-850 mm...