Market Position:
The Gilera Nexus series, particularly the 300 ie model, was positioned as a premium, sporty maxi-scooter in the European market, known for its strong performance and agile handling.
Competitive Analysis:
Competed with other 300cc class maxi-scooters from manufacturers like Piaggio (X-evo 300), Yamaha (X-MAX 250, though displacement was lower), and Suzuki (Burgman 250/400). The Nexus 300 offered a blend of scooter practicality with motorcycle-like dynamics.
Key Features:
Powerful 300cc liquid-cooled engine, advanced electronic fuel injection (EFi) for optimal performance and emissions, robust chassis design for stable handling, sophisticated suspension system, comfortable ergonomics for touring, and a sporty aesthetic.
Systems Covered:
Engine (overall), Engine from Vehicle, Injection System, Cooling System, Fuel System, Exhaust System, Chassis, Suspension (front and rear), Braking System (front and rear), Electrical System (wiring diagrams, components, lighting, ignition), Transmission (likely CVT, with clutch and variator details), Drive System (final drive), Bodywork and Panels, Pre-delivery Checks, Routine Maintenance, Troubleshooting
Procedures Included:
Detailed disassembly and reassembly of all major components, routine maintenance tasks (oil changes, filter replacements, spark plug checks), troubleshooting guides for common problems, diagnostic procedures for fuel injection and ignition systems, suspension and steering adjustments, brake system servicing (pad replacement, bleeding), electrical system diagnostics and repairs, torque specifications for all fasteners, component testing procedures, scheduled maintenance intervals.
Technical Depth:
Comprehensive, covering from basic rider maintenance to advanced mechanical repairs and diagnostics. Suitable for both DIY enthusiasts and professional technicians. Includes detailed exploded diagrams and step-by-step instructions.
Engine Type:
Four-stroke, single-cylinder, liquid-cooled, 4-valve (likely OHC or DOHC)
Displacement:
Approx. 278cc (based on the '300' designation and Piaggio engine family)
Bore X Stroke:
Likely around 75mm x 63mm (typical for Piaggio 300cc LEADER/QUASAR engines)
Compression Ratio:
Approximately 11.0:1 to 12.0:1 (typical for this class)
Horsepower:
Around 22-24 HP (16-18 kW) at approximately 7500 rpm (speculative based on similar engines)
Torque:
Around 23-25 Nm (17-18 lb-ft) at approximately 5500 rpm (speculative based on similar engines)
Fuel Injection:
Electronic Fuel Injection (EFi) with a throttle body (likely 32-36mm) and possibly a Lambda sensor for closed-loop operation.
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended)
Fuel Tank Capacity:
Approximately 12-13 liters
Oil Type:
API SG/SH or higher, JASO MA certified synthetic or semi-synthetic 4-stroke engine oil (e.g., 10W-40 or 15W-50, consult manual for exact grade)
Oil Capacity:
Approximately 1.0 - 1.2 liters with filter change (consult manual for exact figure)
Ignition System:
Electronic ignition with digital advance.
Spark Plug:
Specific type and gap, e.g., NGK CR9EB or equivalent (consult manual for exact part number and gap)
Transmission Type:
Automatic Continuously Variable Transmission (CVT) with dry centrifugal clutch.
Final Drive:
Gear reduction drive, via a sealed gearbox.
Gearbox Oil Type:
Specific SAE 80W/90 hypoid gear oil (consult manual for exact specifications)
Gearbox Oil Capacity:
Approximately 0.25 - 0.30 liters (consult manual for exact figure)
Safety Ratings:
N/A (Motorcycles/Scooters typically do not have NHTSA or Euro NCAP ratings in the same way cars do. Focus is on design features for rider safety.)
Active Safety Features:
Powerful dual disc braking system (front and rear), potentially with ABS as an option (though not explicitly mentioned for this specific variant, it was available on other Nexus models), responsive steering, good chassis dynamics for stability.
Passive Safety Features:
Integrated bodywork designed to offer some rider protection, robust frame construction, integrated lighting systems (headlights, taillights, indicators), horn.
Infotainment Features:
Basic analog/digital instrument cluster displaying speed, RPM, fuel level, engine temperature, odometer, trip meter, and warning lights. No advanced infotainment systems typical of modern cars.
Driver Assistance Features:
N/A (Focus on rider control and basic safety features like ABS on some variants).
Connectivity Features:
N/A
First Service:
Typically around 1,000 km (or 600 miles) for initial break-in service (oil change, filter check, general inspection).
Routine Maintenance Intervals:
Engine oil and filter change every 5,000-7,500 km or annually. Air filter inspection/replacement every 5,000-10,000 km. Spark plug inspection/replacement every 10,000-15,000 km. Check and adjust valve clearances every 15,000-20,000 km. CVT belt and roller inspection every 10,000 km, replacement as needed based on wear. Brake fluid flush every 2 years. Coolant replacement every 2-3 years.
Engine Oil Specification:
API SG/SH or higher, JASO MA certified synthetic or semi-synthetic 4-stroke engine oil, viscosity typically 10W-40 or 15W-50 (refer to manual for precise grade and quantity).
Cooling System Coolant:
Ethylene glycol based antifreeze coolant with corrosion inhibitors, typically a 50/50 mix with distilled water. (e.g., Piaggio Coolant or equivalent).
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Gearbox Oil Type:
SAE 80W/90 hypoid gear oil.
Common Issues And Maintenance Tips:
Potential for CVT belt wear over time requiring replacement. Fuel injection system can be sensitive to fuel quality. Regular checks of tire pressures, brake pads, and coolant levels are crucial for longevity. Electrical connections should be kept clean and dry. Proper warm-up before spirited riding is advised. The manual will detail specific diagnostic codes and troubleshooting steps.
Brand Heritage:
Gilera is an Italian manufacturer with a long and storied history in motorcycling, dating back to 1909. Known for performance-oriented scooters and motorcycles, Gilera became part of the Piaggio Group in 2001, benefiting from shared technology and resources.
Model Evolution:
The Gilera Nexus range was introduced in the early 2000s as a sport-touring maxi-scooter. It evolved through various engine displacements (125, 250, 300, 500cc) and updates to styling and technology. The 300 ie model represented a significant step up in performance from the 250cc versions, utilizing a modern Piaggio engine.
Production Period:
The Nexus 300 ie was primarily produced from around 2007/2008 onwards. The Nexus line itself was produced roughly between 2003 and 2010.
Manufacturing Location:
Italy (as part of the Piaggio Group manufacturing base).
