🏷️ Basic Information Identification Make: Aprilia Model: V990 Engine Engine Family: V990 👋 Introduction Market Position Market Position: A vital resource for Aprilia V990 engine owners and mechanics seeking to perform maintenance and repairs themselves, aiming to save on labor costs. Competitive Analysis Competitive Analysis: Offers comprehensive coverage comparable to official service manuals, providing detailed, step-by-step instructions and diagrams for DIY enthusiasts and professional technicians alike. Key Features Key Features: Instant download, printable pages, detailed diagrams, step-by-step instructions, broad system coverage. 📋 Manual Details Coverage Areas Coverage Areas: General Information, Service and Setting Up, Engine, Fuel Supply System, Cooling System, Electrical System, Chassis Parts, Repair Information, Analytical Index Page Count Page Count: Not specified, but described as 'Tons of pictures and diagrams at your fingertips!!' Manual Type Manual Type: Complete Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanicals, fuel injection/carburetion, ignition, lubrication, cooling, electrical components, chassis components related to engine operation Procedures Included Procedures Included: General maintenance, engine disassembly and reassembly, component diagnostics, troubleshooting, tuning, repair procedures, service settings Technical Depth Technical Depth: Comprehensive, suitable for basic maintenance to advanced engine rebuilds and diagnostics 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Printable pages with 'tons of pictures and diagrams' Binding Type Binding Type: Digital (Instant Download) Paper Type Paper Type: N/A (Digital Format) Software Requirements Software Requirements: Adobe PDF Reader, WinZip Interactivity Interactivity: Zoom in/out functionality ⚙️ Engine Specifications Primary Engine Engine Type: V-Twin, 4-stroke Engine Configuration: 90-degree V-Twin Engine Displacement: 990 cc (Actual displacement varies by specific Aprilia model utilizing the V990 engine) Bore X Stroke: Typically around 97 mm x 68 mm (varies by model) Valvetrain: DOHC, 4 valves per cylinder Cooling System: Liquid-cooled Ignition System: Electronic ignition Performance Horsepower Range: Typically 120-140+ hp, depending on specific model and tuning (e.g., RSV Mille, Tuono) Torque Range: Typically 95-110+ Nm, depending on specific model and tuning Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) or Carburetor (varies by model/year) Fuel Type: Unleaded gasoline Lubrication System Oil Type: Specific motorcycle synthetic oil (e.g., SAE 10W-40, API SG or higher, JASO MA) Oil Capacity: Approximately 3.5 - 4.0 liters (dry fill) - Refer to specific model manual for exact capacity. Oil Filter: Specific Aprilia oil filter (e.g., HF152, HF303 for some models - cross-reference required) 🔧 Transmission Standard Transmission Type: Manual Gear Count: 6-speed Clutch Type: Wet, multi-plate, hydraulic actuation Transmission Fluid: Specific motorcycle transmission oil or engine oil depending on shared sump design (e.g., SAE 75W-90 or specific engine oil meeting JASO MA/MA2 standards) 📐 Dimensions Exterior Dimensions Note: Engine dimensions are integrated within the motorcycle chassis. Specific motorcycle overall dimensions vary significantly by model (e.g., RSV Mille, Tuono, Falco). Weights Engine Weight: Estimated dry weight approximately 60-70 kg (varies by model and components attached) 🛡️ Safety Features Ratings Safety Note: Safety features are vehicle-specific. This manual focuses on engine operation and maintenance. 💡 Technology Features Infotainment Technology Note: This manual focuses on the mechanical and electrical systems of the engine. Vehicle-specific infotainment systems are not covered. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-6,000 miles or annually, whichever comes first (refer to specific model manual for exact intervals). Spark Plug Replacement: Recommended around 12,000-24,000 miles (refer to specific model manual). Valve Clearance Check: Typically every 12,000-24,000 miles (requires shims for adjustment). Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze with corrosion inhibitors, typically a 50/50 mix with distilled water. Brake Fluid Type: DOT 4 or DOT 5.1 (refer to specific model manual for exact specification and replacement intervals). Known Issues Known Issues Common: Potential issues include stator failure, regulator/rectifier problems, occasional fuel pump issues, cam chain tensioner wear, and clutch slave cylinder leaks, depending on model and maintenance history. Some early models had issues with engine mapping. Known Issues Electrical: Degradation of wiring harness connectors and grounding points can lead to intermittent electrical faults. Known Issues Engine: Regular maintenance of the cam chain tensioners is crucial to prevent potential engine damage. 📚 Vehicle History Brand Heritage Brand Heritage: Aprilia is an Italian manufacturer renowned for its performance motorcycles, particularly in the sportbike and racing segments. Model Evolution Model Evolution: The V990 engine family powered a range of Aprilia's flagship models in the late 1990s and early 2000s, including the RSV Mille, Mille R, Tuono, Falco, and Caponord, evolving through various iterations for different applications. Production Production Period: Mid-1990s through the 2000s, with variants used in models released into the late 2000s. 🏆 Awards & Recognition Recognitions Awards Note: Specific awards for the V990 engine itself are not typically cited; however, the motorcycles powered by this engine, such as the Aprilia RSV Mille, have received critical acclaim and awards in their respective categories for performance and handling.