Vehicle Segment:
        
        
            High-performance maxi-scooter.
        
     
    
        
            Target Audience:
        
        
            Riders seeking a sporty and capable scooter for commuting, touring, and spirited riding.
        
     
    
    
        
            Key Competitors:
        
        
            Yamaha TMAX, Suzuki Burgman 400/650, Honda Silver Wing, Aprilia Atlantic 500.
        
     
    
    
        
            Vehicle Features:
        
        
            Powerful 500cc engine, sporty chassis, advanced suspension, comfortable ergonomics, ample storage, Euro 3 emissions compliance.
        
     
    
    
        
            Manual Objective:
        
        
            To provide comprehensive guidance for the maintenance, repair, and restoration of the Gilera Nexus 500 Euro 3.
        
     
 
    
    
    
        
            Engine:
        
        
            Complete engine disassembly, assembly, tuning, diagnostics, and repair.
        
     
    
        
            Fuel System:
        
        
            Fuel injection system, fuel pump, injectors, throttle body, fuel tank, and lines.
        
     
    
        
            Ignition System:
        
        
            Ignition coil, spark plug, ECU control of ignition timing.
        
     
    
        
            Cooling System:
        
        
            Radiator, coolant flow, water pump, thermostat, fan operation.
        
     
    
        
            Exhaust System:
        
        
            Catalytic converter, exhaust manifold, muffler, lambda sensor (O2 sensor) function.
        
     
    
        
            Transmission:
        
        
            Automatic CVT transmission overhaul, maintenance, and troubleshooting.
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system (front and rear), brake calipers, master cylinders, brake fluid, ABS (if equipped).
        
     
    
        
            Suspension:
        
        
            Front fork assembly (telescopic forks), rear shock absorber, swingarm, linkage (if applicable).
        
     
    
        
            Steering:
        
        
            Handlebar assembly, steering head bearings, steering column.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, battery, alternator/stator, starter motor, lighting (headlight, taillight, indicators), horn, fuses, relays, ECU.
        
     
    
        
            Instrumentation:
        
        
            Dashboard instruments, warning lights, diagnostic indicators.
        
     
    
        
            Bodywork:
        
        
            Fairings, seat, storage compartments, body panel removal and installation.
        
     
    
        
            Wheels Tires:
        
        
            Wheel bearing replacement, tire pressure, tire replacement procedures.
        
     
    
    
        
            Maintenance:
        
        
            Scheduled maintenance, oil changes, filter replacements, chain adjustment (if applicable, though typically belt-driven or shaft), spark plug replacement, coolant flush.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic charts, fault code interpretation (if OBD-II or similar system is present), common problems and their solutions.
        
     
    
        
            Repair:
        
        
            Step-by-step repair instructions for all major vehicle components.
        
     
    
        
            Rebuild:
        
        
            Complete engine and transmission rebuild procedures with detailed specifications.
        
     
    
        
            Diagnostics:
        
        
            Detailed diagnostic procedures for electrical and mechanical systems.
        
     
    
        
            Disassembly Assembly:
        
        
            Comprehensive instructions for removing and installing all parts and sub-assemblies.
        
     
    
    
        
            Depth:
        
        
            In-depth technical information suitable for professional mechanics and experienced DIY enthusiasts.
        
     
    
        
            Diagnostics Level:
        
        
            Advanced diagnostic capabilities, including component testing and system analysis.
        
     
    
        
            Torque Specifications:
        
        
            Detailed torque specifications for all fasteners and critical components.
        
     
    
        
            Clearances Tolerances:
        
        
            Precise mechanical clearances and tolerances for engine components and other critical parts.
        
     
 
    
    
    
        
            Engine Type:
        
        
            Four-stroke, single-cylinder, liquid-cooled, DOHC.
        
     
    
        
            Displacement:
        
        
            492.7 cc (Approx.)
        
     
    
        
            Bore X Stroke:
        
        
            Refer to manual for precise dimensions.
        
     
    
        
            Compression Ratio:
        
        
            Refer to manual for precise ratio.
        
     
    
    
        
            Horsepower:
        
        
            Approximately 40-45 HP (at crankshaft), depending on specific model year and tune.
        
     
    
        
            Torque:
        
        
            Approximately 45-50 Nm (at crankshaft), depending on specific model year and tune.
        
     
    
    
        
            Fuel Delivery:
        
        
            Electronic Fuel Injection (EFI).
        
     
    
        
            Fuel Type:
        
        
            Unleaded Gasoline (Petrol).
        
     
    
    
        
            Oil Type:
        
        
            Refer to manual for specific grade (e.g., SAE 10W-40 or 15W-50), typically JASO MA certified.
        
     
    
        
            Oil Capacity:
        
        
            Refer to manual for precise capacity (approx. 1.5 - 1.8 liters).
        
     
    
    
        
            Coolant Type:
        
        
            Ethylene glycol-based antifreeze mixture.
        
     
    
        
            Coolant Capacity:
        
        
            Refer to manual for precise capacity.
        
     
 
    
    
    
        
            Instrument Panel:
        
        
            Digital and analog display including speedometer, tachometer, fuel gauge, odometer, trip meter, coolant temperature, and various warning lights.
        
     
    
    
        
            ABS:
        
        
            Anti-lock Braking System (ABS) available on some models, enhancing braking stability.
        
     
    
    
        
            Diagnostic Port:
        
        
            Onboard diagnostics (OBD) or proprietary diagnostic connector for electronic system analysis.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Refer to manual, typically every 5,000 - 7,000 km or annually.
        
     
    
        
            Air Filter Replacement:
        
        
            Refer to manual, typically every 10,000 - 15,000 km.
        
     
    
        
            Spark Plug Replacement:
        
        
            Refer to manual, typically every 15,000 - 20,000 km.
        
     
    
        
            Coolant Flush Interval:
        
        
            Refer to manual, typically every 2 years or 24,000 km.
        
     
    
    
        
            Brake Fluid Type:
        
        
            DOT 4 (or as specified in the manual).
        
     
    
        
            Coolant Ratio:
        
        
            50/50 mix of antifreeze and distilled water.
        
     
    
    
        
            Common Wear Items:
        
        
            CVT belt wear, voltage regulator/stator issues (common in many scooters of this era), steering head bearings, brake pad wear.
        
     
    
        
            Diagnostic Tips:
        
        
            Manual provides troubleshooting for common electrical faults (e.g., starting issues, charging system problems) and fuel system diagnostics.