Engine Mechanical:
Complete disassembly, assembly, inspection, and repair of the V990 engine (cylinder heads, pistons, crankshaft, connecting rods, valves, camshafts).
Fuel System:
Fuel injection system (ECU, injectors, throttle bodies, fuel pump, pressure regulator), carburetor systems (for earlier models), fuel tank, lines, and filters.
Ignition System:
Ignition coils, spark plugs, ECU control, timing.
Cooling System:
Radiator, fan, coolant pump, thermostat, hoses, fluid specifications.
Exhaust System:
Catalytic converter, mufflers, lambda sensors (oxygen sensors).
Transmission Drivetrain:
Clutch operation and adjustment, gearbox disassembly, assembly, inspection, lubrication, and repair. Chain and sprocket maintenance.
Chassis Frame:
Frame inspection, handling of frame damage, steering head bearing service.
Suspension:
Front fork (Öhlins/Showa/Sachs depending on model year) overhaul, oil levels, seal replacement, spring rates, damping adjustments. Rear shock absorber service, linkage maintenance.
Brakes:
Brake system diagnostics, caliper overhaul, master cylinder service, brake fluid replacement, bleeding procedures, ABS system (if equipped), rotor and pad specifications.
Electrical System:
Wiring diagrams, troubleshooting guides, ECU functions, battery, charging system (stator, regulator/rectifier), lighting, starter motor, instrument panel.
Bodywork:
Fairing removal and installation, seat maintenance, fuel tank removal.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain lubrication and adjustment, brake fluid flush, coolant replacement, tire pressure checks.
Troubleshooting:
Diagnostic procedures for common engine, electrical, and chassis issues, fault code interpretation (if applicable).
Engine Rebuild:
Detailed step-by-step instructions for complete engine disassembly, component inspection, measurement of clearances, and reassembly.
Suspension Overhaul:
Fork seal replacement, oil level adjustment, shock absorber servicing.
Brake Service:
Caliper piston service, master cylinder rebuild, bleeding procedures.
Electrical Diagnostics:
Wiring harness checks, component testing, fault finding using multimeter and specific diagnostic tools.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and component overhauls, suitable for experienced DIY mechanics and professional technicians.
Engine Type:
90-degree V-twin, four-stroke
Displacement:
998cc (may vary slightly with specific models/updates)
Bore X Stroke:
97mm x 67.5mm (typical)
Valvetrain:
DOHC, 4 valves per cylinder
Horsepower:
Approx. 126-136 HP (depending on model year and tuning)
Torque:
Approx. 98-102 Nm (depending on model year and tuning)
Fuel Delivery:
Electronic Fuel Injection (EFI) with dual injectors per cylinder (later models); Carbureted on some very early variants.
Fuel Type:
Unleaded gasoline (95 RON recommended)
Oil Type:
High-quality synthetic motorcycle oil (e.g., SAE 10W-40, API SG or higher, JASO MA/MA2 certified). Specific Aprilia recommendations should be consulted.
Coolant Type:
Ethylene glycol-based coolant mixed with distilled water (50/50 ratio). Specific Aprilia coolant recommended.
Length:
Approx. 2030 mm (may vary slightly by year)
Width:
Approx. 720 mm (at handlebars)
Height:
Approx. 1120 mm (seat height approx. 810-820 mm)
Dry Weight:
Approx. 184-198 kg (depending on model year and equipment)
Fuel Capacity:
Approx. 18-21 Liters (depending on model year)
Front Tire Size:
120/70 ZR17
Rear Tire Size:
190/50 ZR17 (or 190/55 ZR17 on later models)
Wheelbase:
Approx. 1415-1425 mm
Front Brake:
Dual 320mm discs with radial-mount Brembo calipers
Rear Brake:
220mm disc with dual-piston caliper
Oil Change Interval:
Typically every 5,000-7,500 km or annually. The manual will provide precise intervals.
Air Filter Service:
Inspect every 5,000 km, replace as needed or every 10,000-15,000 km. Manual will specify.
Spark Plug Replacement:
Typically every 10,000-15,000 km. Manual will specify plug type and gap.
Coolant Replacement:
Every 2-3 years or 20,000-30,000 km. Manual will specify.
Brake Fluid Replacement:
Every 1-2 years. Manual will specify fluid type.
Engine Oil Capacity:
Approx. 3.5-4.0 Liters (with filter change). Consult manual for exact capacity.
Coolant Capacity:
Approx. 2.5-3.0 Liters. Consult manual for exact capacity.
Clutch Fluid Type:
DOT 4 brake fluid. Consult manual for specific approval.
Fork Oil Type:
Specific grade of suspension fluid, typically around SAE 5W or 7.5W. Manual will detail viscosity and level.
Common Faults:
Stator failure (charging system), regulator/rectifier issues, clutch slave cylinder leaks, occasional starter solenoid issues. The manual will provide diagnostic steps for these.