🏷️ Basic Information Identification Make: Aprilia Model: Tuono V990 Years Covered: 2002, 2003, 2004, 2005 Codes Engine Code: V990 (Rotax V-twin) 📋 Manual Details Coverage Areas Comprehensive Coverage: Yes Engine: Yes Transmission: Yes Fuel System: Yes Ignition System: Yes Lubrication System: Yes Exhaust System: Yes Electrical System: Yes Bodywork: Yes Routine Maintenance: Yes Troubleshooting Diagnostics: Yes Component Overhaul: Yes Proprietary Components: Included instructions from component manufacturers Page Count Estimated Pages: Refer to actual PDF for exact count (typically several hundred for a comprehensive manual) Manual Type Unknown: Service Manual Language Unknown: English Format Unknown: PDF Delivery Unknown: Electronic Delivery via Email Printability Unknown: Yes ⚙️ Engine Specifications Primary Engine Engine Type: V-twin Displacement: 990 cc Cooling System: Liquid-cooled Valve Train: DOHC (Dual Overhead Camshafts), 4 valves per cylinder Performance Horsepower: Approximately 125-130 HP (Varies slightly by year/specific model) Torque: Approximately 96-100 Nm (Varies slightly by year/specific model) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline 🔧 Transmission Standard Transmission Type: 6-speed manual Features Clutch Type: Wet multi-plate clutch 📐 Dimensions Exterior Frame Type: Aluminum twin-spar frame 🛡️ Safety Features Features Braking System: Hydraulic disc brakes, front and rear Warning Indicators: WARNING, CAUTION, NOTE symbols utilized for emphasis 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/time intervals Valve Clearance Check: Refer to manual for specific mileage/time intervals Fluid Specifications Engine Oil Type: Refer to manual (typically high-quality synthetic motorcycle oil) Coolant Type: Refer to manual (ethylene glycol based antifreeze/coolant) Brake Fluid Type: DOT 4