This manual covers the SXV/RXV 450 and 550 models from the 2006 model year, representing the first generation of this platform. These high-performance off-road motorcycles are distinguished by their compact, liquid-cooled V-Twin engines, available in 450cc and 550cc variants, and their lightweight, agile steel trellis chassis. Engineered for aggressive riding in supermoto and enduro applications, these models offer a unique power delivery and superior handling thanks to their high-quality, adjustable suspension components. The rich racing heritage is evident in the performance-oriented design of these Italian-manufactured machines. This comprehensive Service Repair Workshop Manual provides detailed information essential for the maintenance and repair of your SXV/RXV. It covers a wide range of systems, including engine mechanicals, fuel, ignition, cooling, exhaust, transmission, suspension, brakes, and the electrical and chassis systems. The manual includes routine maintenance procedures, in-depth repair instructions, troubleshooting guides, and critical technical specifications, such as torque values and fluid requirements. This resource is designed to assist owners, mechanics, and technicians in ensuring the longevity and optimal performance of these enthusiast-focused motorcycles. 🏷️ Basic Information Identification Make: Aprilia Model: SXV/RXV 450/550 Model Variant: SXV 450, SXV 550, RXV 450, RXV 550 Year: 2006 Codes Engine Code 450: V990 (450cc variant) Engine Code 550: V990 (550cc variant) Generation Generation: First Generation (SXV/RXV platform) 👋 Introduction Market Position Positioning: High-performance off-road (Supermoto and Enduro variants) motorcycles targeting experienced riders. Competitive Analysis Competitors 2006: KTM EXC/SXC series, Husqvarna SM/TE series, Yamaha WR/YZF series, Honda CRF/CRFX series, Suzuki RM-Z/DR-Z series. Key Features Engine Type: Compact V-Twin engine, offering a unique power delivery for the class. Chassis Design: Lightweight and agile chassis optimized for aggressive riding. Suspension Performance: High-quality, adjustable suspension components for superior handling and terrain adaptation. Manual Value Proposition Value: Essential resource for maintaining and repairing these enthusiast-focused machines, ensuring longevity and optimal performance. 📋 Manual Details Coverage Areas Engines Covered: 450cc and 550cc V-Twin engines Models Covered: SXV450, SXV550, RXV450, RXV550 Model Years Covered: Primarily 2006, with potential relevance to adjacent years of the same platform Page Count Page Count: Extensive (Specific page count not provided, but described as 'full service and repair instruction') Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, top-end rebuild, bottom-end assembly, piston and ring installation, valve train servicing, timing procedures Fuel System: Carburetor (or fuel injection on later models, but 2006 likely carb) overhaul and adjustment, fuel pump testing, fuel filter replacement Ignition System: Ignition coil testing, spark plug specifications, CDI unit troubleshooting Cooling System: Radiator and fan maintenance, coolant flush and fill, water pump inspection and replacement Exhaust System: Exhaust component inspection, gasket replacement Transmission: Clutch inspection and replacement, gearbox disassembly and reassembly, gear oil specifications Suspension: Front fork servicing (oil change, seal replacement), rear shock absorber maintenance and adjustment, linkage bearing inspection Brakes: Brake caliper overhaul, hydraulic system bleeding, brake pad and rotor replacement, master cylinder servicing Electrical System: Wiring diagrams, stator and alternator testing, battery maintenance, lighting system troubleshooting, starter motor inspection Chassis And Bodywork: Frame inspection, body panel removal and installation, seat and tank mounting Procedures Included Maintenance Tasks: Routine servicing, oil changes, filter replacements, chain adjustment, spark plug replacement, valve clearance checks Repair Procedures: Detailed step-by-step instructions for component removal, repair, and reinstallation Troubleshooting: Diagnostic charts and procedures for identifying and resolving common and uncommon faults Torque Specifications: Essential torque values for critical fasteners Special Tools: Identification of any special tools required for specific procedures Technical Depth Depth: Comprehensive: Covers from basic maintenance to full engine rebuilds and complex electrical diagnostics. 📊 Manual Specifications File Format File Format: PDF Searchability: Likely text-searchable PDF (standard for quality manuals) Print Quality Print Quality: High-resolution scans suitable for printing clear diagrams and text Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, four-stroke, V-Twin Displacement 450: Approx. 449cc Displacement 550: Approx. 549cc Bore X Stroke 450: Approx. 77mm x 48mm (estimated, may vary slightly) Bore X Stroke 550: Approx. 82mm x 52.7mm (estimated, may vary slightly) Compression Ratio: Typically around 12.5:1 to 13.5:1 (check manual for specific) Valvetrain: SOHC, 4 valves per cylinder Performance Horsepower 450: Approx. 50-55 HP (at crankshaft, estimated) Horsepower 550: Approx. 58-62 HP (at crankshaft, estimated) Torque 450: Approx. 40-44 Nm (at crankshaft, estimated) Torque 550: Approx. 48-52 Nm (at crankshaft, estimated) Fuel System Fuel Delivery 2006: Carburetor(s) - likely Keihin FCR units Fuel Type: Unleaded gasoline, minimum 95 octane (RON) 🔧 Transmission Standard Transmission Type: 6-speed manual Optional Optional Gearbox: N/A for 2006 model year Features Clutch Type: Wet, multi-plate, hydraulic actuation Final Drive: Chain drive 📐 Dimensions Exterior Frame Type: Steel trellis frame Weights Dry Weight Approx 450: Approx. 120-125 kg Dry Weight Approx 550: Approx. 125-130 kg Fuel Tank Capacity: Approx....