Market Segment:
        
        
            High-performance naked sportbike, competing with Ducati Monster, Triumph Speed Triple.
        
     
    
    
        
            Key Selling Points:
        
        
            Powerful V-twin engine, agile handling, aggressive styling, Italian engineering.
        
     
    
    
        
            Manual Utility:
        
        
            Essential resource for owners and mechanics for maintenance, repair, and troubleshooting, emphasizing clarity and detail.
        
     
 
    
    
    
        
            Engine Systems:
        
        
            Engine disassembly, assembly, diagnosis, testing, lubrication, cooling, fuel injection, ignition, exhaust.
        
     
    
        
            Drivetrain Systems:
        
        
            Clutch, gearbox (transmission), final drive (chain and sprockets).
        
     
    
        
            Chassis Systems:
        
        
            Frame, suspension (front forks, rear shock absorber), steering, wheels, tires.
        
     
    
        
            Braking Systems:
        
        
            Brake system diagnosis, hydraulic components, brake fluid, caliper, master cylinder, brake lines.
        
     
    
        
            Electrical Systems:
        
        
            Wiring diagrams, battery, charging system, lighting, ignition system, ECU, sensors, starter motor.
        
     
    
        
            Bodywork And Fixtures:
        
        
            Fairings, seat, fuel tank, instrumentation, fasteners.
        
     
    
    
        
            Maintenance Procedures:
        
        
            Scheduled maintenance, fluid changes, filter replacements, chain adjustment, brake checks.
        
     
    
        
            Repair Procedures:
        
        
            Detailed step-by-step instructions for disassembly, assembly, and repair of all major components.
        
     
    
        
            Troubleshooting Guides:
        
        
            Diagnostic procedures for identifying and resolving common and uncommon issues.
        
     
    
        
            Adjustment Procedures:
        
        
            Carburetor/throttle body synchronization, valve clearance adjustment, suspension setup, electrical component adjustments.
        
     
    
        
            Special Tool Usage:
        
        
            Identification and usage instructions for specific Aprilia service tools.
        
     
    
    
        
            Depth Of Coverage:
        
        
            Comprehensive, from basic checks and maintenance to complete engine and transmission rebuilds, including diagnostic procedures.
        
     
 
    
    
    
        
            Engine Type:
        
        
            V-twin, four-stroke, liquid-cooled, DOHC, 8 valves
        
     
    
        
            Engine Displacement:
        
        
            998 cc (997.6 cc)
        
     
    
        
            Bore X Stroke:
        
        
            97 mm x 67.5 mm
        
     
    
    
        
            Horsepower Approx:
        
        
            120 - 130 HP (claimed, depending on specific model year/tune)
        
     
    
        
            Torque Approx:
        
        
            95 - 100 Nm (claimed, depending on specific model year/tune)
        
     
    
    
        
            Fuel Delivery:
        
        
            Electronic Fuel Injection (EFI) - Weber Marelli or similar
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline, minimum 95 RON
        
     
    
    
        
            Oil Type:
        
        
            SAE 10W-40 or 15W-50, API SG or higher, JASO MA compliant motorcycle specific oil
        
     
    
    
        
            Cooling System:
        
        
            Liquid cooling with radiator and fan
        
     
    
    
        
            Ignition System:
        
        
            Digital CDI with variable ignition timing
        
     
 
    
    
    
        
            Safety Focus:
        
        
            High-performance motorcycle, emphasis on rider skill and adherence to safety precautions.
        
     
    
    
        
            Braking System:
        
        
            Dual front discs with radial-mount calipers, single rear disc.
        
     
    
        
            Suspension Design:
        
        
            Adjustable front forks (e.g., Showa or Marzocchi), adjustable rear monoshock.
        
     
 
    
    
    
        
            Instrumentation:
        
        
            Analog tachometer, digital speedometer, odometer, trip meter, coolant temperature, basic warning lights.
        
     
    
    
        
            Rider Aids:
        
        
            No electronic rider aids (ABS, traction control) typically found on this generation.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Typically every 6,000 - 10,000 km or annually, consult manual for precise interval.
        
     
    
        
            Valve Clearance Interval:
        
        
            Typically every 12,000 - 24,000 km, consult manual for precise interval.
        
     
    
    
        
            Coolant Type:
        
        
            Ethylene glycol based antifreeze mixture with demineralized water (typically 50/50).
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 or DOT 5.1 recommended.
        
     
    
        
            Fork Oil Grade:
        
        
            Specify viscosity grade (e.g., 10W) and level as per manual.
        
     
    
    
        
            Common Wear Items:
        
        
            Clutch wear, regulator/rectifier failure (early models), fuel pump issues, potential electrical connector corrosion.
        
     
    
        
            Performance Tuning Notes:
        
        
            Manual covers standard tuning and diagnosis; aftermarket ECU tuning may require specialized knowledge.
        
     
    
    
        
            Importance Of Torques:
        
        
            Crucial for proper assembly and component longevity; manual lists specific values for critical fasteners.
        
     
 
    
    
    
        
            Aprilia Legacy:
        
        
            Italian manufacturer with a strong racing pedigree, known for performance motorcycles.
        
     
    
    
        
            Tuono V990 Origin:
        
        
            Derived from the Aprilia RSV Mille sportbike, adapted for naked streetfighter ergonomics.
        
     
    
    
        
            Production Period:
        
        
            Produced from 2001 through early 2000s.