🏷️ Basic Information Identification Make: Aprilia Model: SXV 550 Engine Model: V990 (specifically the V-twin variant for SXV models) Product Type: Workshop Service Repair Manual 👋 Introduction Market Position Motorcycle Segment: Supermoto / Competition Motocross Target Audience: Enthusiasts, mechanics, and owners performing their own maintenance and repairs. Competitive Analysis Key Competitors: KTM EXC 530, Husqvarna SM570R/SM610, GasGas EC/SM series. Key Features Engine Type: High-performance V-twin, known for strong torque and aggressive power delivery. Unique Selling Proposition: Specialized manual for a niche, high-performance off-road/supermoto motorcycle with a potent V-twin engine. 📋 Manual Details Coverage Areas Covered Years: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Primary Focus: Engine Page Count Estimated Page Count: 300-500 (typical for comprehensive engine manuals) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, inspection, repair, and reassembly procedures for all internal components. Engine Electrical: Ignition system, fuel injection system, starting system, charging system, and associated sensors and actuators. Fuel System: Fuel pump, injectors, fuel pressure regulator, fuel lines, and tank. Cooling System: Radiator, water pump, thermostat, coolant passages, and fan operation. Lubrication System: Oil pump, oil filter, oil passages, and oil cooler (if applicable). Exhaust System: Exhaust manifolds, catalytic converter (if applicable), mufflers, and lambda sensors. Engine Management: ECU (Engine Control Unit) functions, diagnostic trouble codes (DTCs), and sensor data interpretation. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug inspection/replacement, air filter service, valve clearance checks. Troubleshooting: Step-by-step diagnostic procedures for common engine problems, including no-start conditions, misfires, and performance issues. Major Repairs: Engine rebuilds, piston and ring replacement, cylinder head service, crankshaft and connecting rod service. Timing Adjustment: Camshaft timing belt/chain inspection and adjustment, ignition timing verification. Component Replacement: Detailed instructions for replacing individual engine components like the water pump, oil pump, starter motor, alternator. Technical Depth Depth Level: Comprehensive, covering from basic maintenance to complete engine overhauls and diagnostics. Diagnostic Tools: Information on diagnostic connectors, required tools, and interpretation of diagnostic data. Torque Specifications: Detailed torque values for all critical fasteners and engine components. Clearances And Tolerances: Precise specifications for internal engine clearances such as piston-to-cylinder wall, bearing clearances, valve lash. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Searchability: Likely text-searchable PDF for easy information retrieval. Print Quality Print Quality: High resolution, suitable for printing and clear viewing of diagrams and text. Binding Type Binding Type: N/A (Digital Format - PDF) Paper Type Paper Type: N/A (Digital Format - PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, V-twin, liquid-cooled Displacement: 549cc (though often referred to as SXV 550 due to marketing) Bore X Stroke: 86 mm x 79 mm (approximate, actual may vary slightly by year/specific variant) Compression Ratio: 12.5:1 (typical for this engine family) Valve Train: SOHC, 4 valves per cylinder Performance Horsepower: Approximately 65-70 HP (at crankshaft, varies by specific tuning and regulations) Torque: Approximately 50-55 Nm (at crankshaft, varies) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline, minimum 95 RON (Octane rating) Throttle Body Size: 45mm (typical for this application) Lubrication System Oil Type: High-performance motorcycle synthetic oil, SAE 10W-50 or 15W-50 recommended (check manual for specific API/JASO ratings) Oil Capacity: Approx. 1.5 - 1.8 Liters (check manual for exact capacity with filter change) 🔧 Transmission Standard Transmission Type: 6-speed manual sequential gearbox Clutch Type: Hydraulically operated wet multi-plate clutch Features Gear Ratios: Specific ratios provided within the manual for each gear. Final Drive: Chain drive Transmission Fluid: Motorcycle-specific transmission oil or engine oil (depending on design, consult manual). 📐 Dimensions Exterior Wheelbase: 1480 mm (approximate) Seat Height: 900 mm (approximate) Weights Dry Weight: 133 kg (approximate) Wet Weight: Approx. 145 kg (with fluids) 🛡️ Safety Features Ratings Safety Features Focus: Focus on rider safety through component integrity and performance. Active Features Braking System: High-performance hydraulic disc brakes, typically dual front discs with radial calipers and a single rear disc. Suspension: Long-travel, fully adjustable USD (Upside-Down) front forks and adjustable rear monoshock, designed for off-road and aggressive riding. 💡 Technology Features Infotainment Infotainment System: N/A (This is a performance motorcycle; focus is on mechanical and electronic systems, not typical infotainment.) Driver Assistance Rider Aids: Generally minimal rider aids on this model, emphasizing direct rider control and mechanical feedback. Connectivity Connectivity Features: N/A (No Bluetooth, smartphone integration, etc.) Engine Management ECU Functionality: The ECU manages fuel injection, ignition timing, and other engine parameters. Manual details diagnostic capabilities. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 - 5,000 km or annually (refer to manual for precise recommendation based on usage). Valve Clearance Check: Every 5,000 - 10,000 km (critical for V-twin performance and longevity). Spark Plug Replacement: Every 10,000 - 15,000 km. Fluid Specifications Coolant Type: Ethylene glycol-based coolant with corrosion inhibitors, typically 50/50 mix with distilled...