This manual covers the 450 SX-F, 505 SX-F, 450 XC-F, and 505 XC-F models from the 2009 production year. These high-performance, four-stroke, single-cylinder motorcycles are designed for competitive off-road use, including motocross and enduro racing. Known for their lightweight chassis, powerful engines, and advanced suspension systems, these bikes are engineered for peak performance and rider control. The 2009 models represented significant advancements in off-road technology, building on a strong heritage of racing success. This comprehensive factory service repair workshop manual provides detailed guidance for all aspects of maintaining and repairing your motorcycle. It covers essential procedures such as routine maintenance, engine assembly and disassembly, drivetrain servicing, suspension adjustments, brake system overhauls, and electrical system diagnostics. With step-by-step instructions, troubleshooting flowcharts, and technical specifications, this manual is an indispensable resource for owners, mechanics, and technicians aiming to keep these competition machines in optimal condition and ensure their longevity and peak performance. 🏷️ Basic Information Identification Make: KTM Model: 450 SX-F / 505 SX-F / 450 XC-F / 505 XC-F Year: 2009 Generation Platform: KTM Factory Racing Off-Road Series Codes Chassis Code: Likely shared chassis variants for SX-F and XC-F models, specific codes not explicitly provided in product data but common for KTM off-road bikes of this era. 👋 Introduction Market Position Category: High-performance off-road competition motorcycles. Target User: Motocross (SX-F) and Off-road/Enduro (XC-F) racers and enthusiasts. Competitive Analysis Competitors: Yamaha YZ series, Honda CRF series, Suzuki RM-Z series, Kawasaki KX series. Key Features Performance Focus: Lightweight chassis, powerful single-cylinder engines, advanced suspension systems, designed for competition. Manual Value Proposition: Comprehensive factory documentation empowering owners and technicians to maintain and repair their KTMs effectively. 📋 Manual Details Coverage Areas Primary Focus: Comprehensive Service, Repair, and Troubleshooting Scope: All repairs, servicing procedures, and troubleshooting diagnostics. Page Count Estimated Pages: Hundreds (explicit number not provided, but described as 'hundreds of pages'). Manual Type Type: Factory Service Repair Workshop Manual Language Language: English (implied by common availability and product description, though not explicitly stated). Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Engine assembly, disassembly, overhaul, tuning, diagnostics, and component identification. Drivetrain: Clutch system, transmission gears, shift mechanisms, final drive (chain and sprockets). Suspension: Front forks (WP USD models), rear shock absorber (WP PDS or linkage systems depending on exact SX-F/XC-F variant), adjustment procedures, seal replacement, oil changes. Brakes: Hydraulic brake systems (front and rear calipers, master cylinders, lines), pad replacement, fluid bleeding, rotor inspection and replacement. Electrical: Ignition system, lighting, battery, charging system (stator, rectifier/regulator), wiring diagrams, component testing. Fuel System: Carburetor (likely Keihin FCR series), fuel pump (if applicable to specific XC-F variant), fuel filter, tank inspection. Cooling System: Radiator, hoses, coolant, thermostat (if present), fan operation (if applicable). Frame And Bodywork: Frame inspection, subframe, body panel removal and installation, seat, handlebars, footpegs. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, chain lubrication and adjustment, tire pressure, spark plug replacement, valve clearance checks and adjustments. Troubleshooting: Diagnostic flowcharts, common problem identification, symptom-based repair guidance. Repair: Detailed step-by-step instructions for component overhaul, replacement, and reassembly. Rebuilds: Engine rebuilds, transmission rebuilds, suspension component overhauls. Technical Depth Depth: Professional-grade, covering everything from basic maintenance to complete engine teardowns and complex diagnostics. Detail Level: Highly detailed with photos, diagrams, and exploded views for precise work. 📊 Manual Specifications File Format Format Details: PDF (Portable Document Format), compatible with Windows and MAC operating systems. Print Quality Print Capabilities: Printable (single pages or the entire manual). Binding Type Binding: N/A (Digital download, no physical binding). Paper Type Paper Quality: N/A (Digital download, no physical paper type). Licensing Usage Rights: Lifetime use on unlimited computers, no expiry dates or renewal fees. ⚙️ Engine Specifications Primary Engine Type: Four-stroke, single-cylinder. Displacement 450: Approximately 449.3 cc (specific details available in manual). Displacement 505: Approximately 504.7 cc (specific details available in manual). Bore X Stroke: Variable based on 450/505 models (refer to manual for exact specifications). Cooling: Liquid-cooled. Valve Train: SOHC (Single Overhead Camshaft) with 4 valves (specific actuation mechanism like rocker arms detailed in manual). Performance Horsepower Estimate: Estimated 50-55+ HP (actual figures vary by model and tuning, manual will provide exact dyno data or specifications). Torque Estimate: Estimated 35-40+ lb-ft (actual figures vary, manual will provide exact data). Fuel System Carburetor Type: Keihin FCR (Flat CR) series, specific CFM and jetting details in manual. Fuel Type: Unleaded gasoline, octane rating recommendations provided in manual. Engine Components Cylinder Material: Likely Nikasil-plated aluminum cylinder. Piston Type: Forged aluminum piston (details on ring sets and compression ratios in manual). 🔧 Transmission Standard Type: Constant-mesh, sequential claw-shifted gearbox. Number Of Gears: Likely 5-speed (common for SX/XC models of this era, manual will confirm). Features Clutch Type: Hydraulically operated multi-disc wet clutch (KTM PowerParts components often used, manual will detail standard specs). Gear Ratios: Specific gear ratios for each of the 5...