Target Audience:
Aprilia V990 Engine Owners, Motorcycle Technicians, DIY Enthusiasts
Value Proposition:
Provides dealership-level diagnostic and repair information for essential engine maintenance and overhauls.
Content Quality:
Dealership Technician Standard, Step-by-step Instructions, Extensive Illustrations
Accessibility:
Instant PDF Download
Engine Mechanical:
Top End (Cylinder Heads, Valves, Camshafts), Bottom End (Crankshaft, Connecting Rods, Pistons), Cooling System, Lubrication System
Engine Electrical:
Ignition System, Fuel Injection System (EFI), Sensors, ECU Diagnosis, Starting System, Charging System
Fuel System:
Fuel Pump, Injectors, Fuel Pressure Regulator, Fuel Lines
Exhaust System:
Exhaust Manifold, Catalytic Converter (if applicable), Muffler
Air Intake System:
Airbox, Throttle Body, Air Filter
Routine Maintenance:
Oil and Filter Change, Air Filter Replacement, Spark Plug Replacement, Coolant Flush, Valve Clearance Adjustment
Major Repairs:
Engine Rebuilds, Head Gasket Replacement, Piston and Ring Replacement, Crankshaft and Bearing Replacement, Transmission Overhaul (if integrated)
Diagnosis And Troubleshooting:
Error Code Diagnosis, Symptom-Based Troubleshooting, Component Testing
Technical Specifications:
Torque Values, Clearances, Timing Specifications, Fluid Capacities, Electrical Schematics
Depth:
Expert Level (Dealership Technician Standard)
Type:
Tons of Pictures and Diagrams
Engine Configuration:
V-Twin, Liquid-Cooled
Displacement:
Approximately 990cc (varies slightly by specific model variant)
Bore X Stroke:
Refer to manual for specific values (e.g., ~97 x 68 mm)
Valve Train:
DOHC, 4 Valves per Cylinder
Horsepower Range:
Typically 120-140 HP (depending on model and tuning)
Torque Range:
Typically 95-105 Nm (depending on model and tuning)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (minimum octane rating specified in manual)
Type:
Electronic Ignition (ECU Controlled)
Type:
Wet Sump or Dry Sump (depending on specific V990 variant)
Coolant Type:
Ethylene Glycol Based Coolant (specific type and mixture ratio in manual)
Mechanism:
Timing Chain (driven by crankshaft, actuates camshafts)
Vehicle Infotainment:
N/A (engine-focused manual - infotainment pertains to the specific motorcycle model).
Engine Control Unit:
Advanced ECU for managing fuel injection, ignition timing, and potentially other engine parameters.
Diagnostic Ports:
Likely equipped with diagnostic ports for connecting electronic diagnostic tools (e.g., OBD-II or proprietary connectors) for fault code retrieval.
Oil And Filter Change:
Typically every 4,000-6,000 miles or annually (refer to manual for specific model year recommendations).
Valve Clearance Check:
Typically every 12,000-24,000 miles or as specified in the manual.
Spark Plug Replacement:
Typically every 12,000-24,000 miles or as specified.
Engine Oil Type:
Refer to manual for specific viscosity grade (e.g., 10W-40, 15W-50) and API classification (e.g., API SG, SH, SJ, SL).
Coolant Capacity:
Refer to manual for specific engine coolant capacity.
Brake Fluid Type:
DOT 4 (typical for Aprilia, confirm in manual).
Common Wear Items:
Cam chain tensioners, clutch plates, regulator/rectifier (can affect charging system).
Potential Engine Problems:
Stator failure, fuel pump issues, starter motor problems, potential valve guide wear with high mileage.
Oil Filter Part Number:
Refer to manual for specific OEM or equivalent aftermarket part numbers (e.g., HF152 for some models).
Air Filter Part Number:
Refer to manual for specific OEM or equivalent aftermarket part numbers.
Manufacturer:
Aprilia is an Italian manufacturer known for its high-performance motorcycles, particularly in racing categories.
V990 Engine Applications:
The V990 engine powered various Aprilia sportbikes and naked bikes from the late 1990s through the 2000s, including models like the RSV Mille, Tuono, and Caponord.
Engine Production Period:
Primarily late 1990s to late 2000s, with variations and updates during its production run.
Engine Performance:
The V990 engine was well-regarded for its strong performance and distinctive V-twin character, contributing to Aprilia's racing success.
Manual Quality:
High (indicated by dealership technician standard and detailed content).
Certification:
N/A (Manual is a service document, not a certified product).
