Vehicle Type:
        
        
            Maxi-scooter
        
     
    
        
            Brand Positioning:
        
        
            Gilera, a Piaggio Group brand, is known for performance-oriented scooters and motorcycles.
        
     
    
    
        
            Competitors 2005 2006:
        
        
            Yamaha TMAX 500, Suzuki Burgman 650, Honda Silver Wing 600, Aprilia Atlantic 500.
        
     
    
    
        
            Design Philosophy:
        
        
            The Nexus 500 was positioned as a sporty, agile maxi-scooter with motorcycle-like handling and performance.
        
     
    
    
        
            Benefit To Owner:
        
        
            Empowers owners and technicians to perform comprehensive maintenance, diagnostics, and repairs, reducing reliance on specialized workshops.
        
     
    
        
            Content Organization:
        
        
            Features a numbered table of contents for quick information retrieval and utilizes bold figure numbers to link illustrations with instructions.
        
     
 
    
    
    
        
            Engine:
        
        
            Detailed repair, maintenance, and rebuilding procedures for the 500cc engine.
        
     
    
        
            Transmission:
        
        
            Covers maintenance, repair, and diagnostics for the transmission system.
        
     
    
        
            Electrical System:
        
        
            Comprehensive coverage including detailed wiring diagrams, troubleshooting, and electrical service procedures.
        
     
    
        
            Chassis And Suspension:
        
        
            Includes procedures for suspension, steering, and chassis components.
        
     
    
        
            Brakes:
        
        
            Detailed information on brake system maintenance and repair.
        
     
    
        
            Fuel System:
        
        
            Covers fuel delivery, injection (if applicable), and related components.
        
     
    
        
            Cooling System:
        
        
            Maintenance and repair procedures for the engine's cooling system.
        
     
    
        
            Exhaust System:
        
        
            Information on exhaust system components and service.
        
     
    
        
            Bodywork And Trim:
        
        
            Procedures for body panels, trim, and related components.
        
     
    
    
        
            Routine Maintenance:
        
        
            Covers all routine maintenance tasks as per service schedules.
        
     
    
        
            Troubleshooting:
        
        
            Extensive troubleshooting guides for common and complex issues, including electrical diagnostics.
        
     
    
        
            Engine Rebuild:
        
        
            Detailed step-by-step instructions for engine rebuilding and overhaul.
        
     
    
        
            Component Replacement:
        
        
            Guidance on replacing all major and minor vehicle components.
        
     
    
        
            Diagnostics:
        
        
            In-depth diagnostic procedures for all vehicle systems.
        
     
    
    
        
            Depth Level:
        
        
            Comprehensive, suitable for professional technicians and experienced DIY mechanics.
        
     
    
        
            Detail Level:
        
        
            Detailed sub-steps, notes, cautions, and warnings provided for each procedure.
        
     
 
    
    
    
        
            Engine Type:
        
        
            Four-stroke, single-cylinder
        
     
    
        
            Displacement:
        
        
            493 cc (approx.)
        
     
    
        
            Bore X Stroke:
        
        
            Typically around 94 mm x 71 mm (specifics to be confirmed in manual)
        
     
    
        
            Cooling System:
        
        
            Liquid-cooled
        
     
    
        
            Valve Train:
        
        
            SOHC, 4 valves
        
     
    
    
        
            Horsepower Output:
        
        
            Around 33-35 HP (Specific dyno figures may vary, manual will provide official specs)
        
     
    
        
            Torque Output:
        
        
            Around 40-45 Nm (Specific figures to be confirmed in manual)
        
     
    
    
        
            Fuel Delivery:
        
        
            Electronic Fuel Injection (EFI) - Keihin or similar ECU likely
        
     
    
        
            Ignition System:
        
        
            Digital electronic ignition
        
     
    
    
        
            Oil Type:
        
        
            Full Synthetic SAE 5W-40 or 10W-40 (Specific Gilera recommendation in manual)
        
     
    
        
            Oil Capacity:
        
        
            Approx. 1.5 - 1.7 liters (check manual for precise capacity and filter change amount)
        
     
 
    
    
    
        
            Length:
        
        
            Approximately 2170 mm (specifics in manual)
        
     
    
        
            Width:
        
        
            Approximately 780 mm (specifics in manual)
        
     
    
        
            Height:
        
        
            Approximately 1450 mm (specifics in manual)
        
     
    
        
            Wheelbase:
        
        
            Approximately 1505 mm (specifics in manual)
        
     
    
    
        
            Dry Weight:
        
        
            Around 185-190 kg (specifics in manual)
        
     
    
        
            Gross Vehicle Weight Rating:
        
        
            Not explicitly stated, but implies capacity for rider and cargo.
        
     
    
    
        
            Front Tire Size:
        
        
            120/70-15 (Typical, verify in manual)
        
     
    
        
            Rear Tire Size:
        
        
            160/60-15 (Typical, verify in manual)
        
     
    
    
 
    
    
    
        
            Crash Test Results:
        
        
            N/A (Motorcycle/Scooter safety is assessed differently than cars, but chassis integrity and braking performance are key)
        
     
    
    
        
            Braking System:
        
        
            Front: Dual hydraulic disc brakes; Rear: Single hydraulic disc brake. ABS may have been an option on some models, verify for 2005-2006.
        
     
    
    
        
            Lighting:
        
        
            Dual headlights, LED taillight (typical for the era).
        
     
 
    
    
    
        
            Instrument Cluster:
        
        
            Digital and analog display for speed, RPM, fuel level, engine temperature, clock, odometer, trip meter. Indicator lights for turn signals, high beam, oil pressure, etc.
        
     
    
    
        
            ABS Availability:
        
        
            ABS was an optional feature for some models in this range. Manual will clarify if ABS is covered and its operation.
        
     
    
    
        
            Charging Port:
        
        
            Likely features a 12V auxiliary power outlet for charging devices (verify in manual).
        
     
 
    
    
    
        
            Oil Change:
        
        
            Every 6,000 km or annually (verify specific interval in manual)
        
     
    
        
            Air Filter Check:
        
        
            Every 6,000 km (clean/replace as needed, verify in manual)
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 12,000 km (verify in manual)
        
     
    
        
            Valve Clearance Check:
        
        
            Every 12,000 km or 24,000 km (verify in manual)
        
     
    
    
        
            Coolant Type:
        
        
            Ethylene glycol based coolant (e.g., Piaggio Coolant or equivalent, verify in manual)
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 (verify in manual for specific requirements)
        
     
    
    
        
            Common Wear Items:
        
        
            CVT belt and rollers, suspension bushings, brake pads.
        
     
    
        
            Potential Electrical Gremlins:
        
        
            While not endemic, any older Italian scooter can have minor electrical connection issues if not maintained. The manual's electrical diagrams are invaluable.
        
     
    
        
            Engine Reliability:
        
        
            The 500cc engine is generally robust, but regular maintenance is key to longevity. Overheating can be an issue if the cooling system is neglected.
        
     
 
    
    
    
        
            Manufacturer:
        
        
            Gilera is an Italian motorcycle manufacturer with a long history dating back to 1909, now part of the Piaggio Group.
        
     
    
    
        
            Nexus Lineage:
        
        
            The Nexus 500 represented Gilera's strong offering in the performance maxi-scooter segment, emphasizing sportiness and comfort.
        
     
    
    
        
            Manufacturing Location:
        
        
            Italy (Piaggio Group plants)