Segment:
High-performance maxi-scooter.
Target Audience:
Owners and technicians seeking in-depth maintenance and repair guidance for the Gilera Nexus 300 I.e.
Competitors:
Yamaha TMAX, Suzuki Burgman, Honda Forza (relevant for the maxi-scooter segment of that era).
Manual Value:
Original factory service manual providing comprehensive diagnostic, repair, and maintenance information.
Content Source:
Written by manufacturers, ensuring accuracy and completeness.
Engine From Vehicle:
Complete engine removal and installation procedures.
Engine:
Detailed internal engine component repair, including cylinder head, pistons, crankshaft, and valve train.
Power Supply:
Information on electrical charging system components (alternator/stator, regulator/rectifier) and battery maintenance.
Suspensions:
Front fork and rear shock absorber maintenance, overhaul, and adjustment procedures.
Chassis:
Frame inspection, steering head bearing maintenance, and general chassis component service.
Braking System:
Front and rear brake caliper service, hydraulic system bleeding, pad replacement, and disc inspection.
Cooling System:
Radiator, water pump, thermostat, and coolant maintenance, including fluid specifications and bleeding procedures.
Bodywork:
Fairing removal/installation, seat, storage compartment, and other external component service.
Pre Delivery:
Pre-delivery inspection checklist and setup procedures.
Electrical System:
Comprehensive wiring diagrams, component testing, lighting system, ignition system, and starter system diagnostics.
Special Tools:
Lists and descriptions of specialized tools required for specific repair and maintenance procedures.
Maintenance:
Scheduled maintenance tasks, fluid changes, filter replacements, and general upkeep.
Troubleshooting:
Diagnostic flowcharts and systematic problem-solving for various systems and common issues.
Repair:
Step-by-step instructions for disassembling, repairing, and reassembling major vehicle components.
Diagnostics:
Detailed diagnostic procedures for identifying faults in engine, electrical, and mechanical systems.
Troubleshooting Guides:
Detailed troubleshooting guides, often presented in a flowchart format, for diagnosing electrical, engine, and mechanical faults.
Depth:
Comprehensive, covering basic maintenance to advanced engine and electrical system diagnostics and repair, suitable for professional technicians.
Torque Specifications:
Comprehensive list of torque specifications for all critical fasteners throughout the vehicle.
Wiring Diagrams:
Detailed electrical wiring diagrams for all vehicle systems, essential for electrical troubleshooting and repair.
Engine Type:
Liquid-cooled, 4-stroke, 4-valve, SOHC.
Bore X Stroke:
75 mm x 63 mm
Compression Ratio:
10.8:1
Fuel System:
Electronic Fuel Injection (I.e.). Specifics on injectors, throttle body, and ECU would be detailed in the manual.
Horsepower:
Approximately 22.5 HP (16.5 kW) at 7,250 rpm (typical for this engine variant).
Torque:
Approximately 23.2 Nm (17.1 lb-ft) at 6,000 rpm (typical for this engine variant).
Oil Type:
The manual will specify SAE viscosity grade (e.g., 10W-40 or 15W-50) and API classification (e.g., SG or higher).
Oil Capacity:
The manual will detail the exact oil capacity for engine oil and filter changes.
Type:
Automatic CVT (Continuously Variable Transmission).
Features:
Automatic centrifugal clutch and belt drive system. Manual will cover CVT belt inspection, replacement, and clutch adjustments.
Transmission Fluid:
The manual will specify the required transmission fluid type and capacity, if applicable beyond engine oil for the CVT system.
Wheelbase:
The manual will provide the exact wheelbase measurement for alignment checks.
Seat Height:
The manual will list the standard seat height for reference.
Dry Weight:
The manual will specify the dry weight of the vehicle.
Gross Vehicle Weight Rating:
The manual will state the GVWR.
Oil Change Interval:
The manual will specify recommended mileage or time intervals for engine oil and filter changes (e.g., every 5,000 km or annually).
Air Filter Replacement:
Intervals for air filter inspection and replacement will be provided.
Spark Plug Replacement:
Recommended service intervals for spark plug inspection and replacement.
Brake Fluid Flush:
Intervals for brake fluid replacement to maintain braking performance.
Coolant Replacement:
Recommended intervals for flushing and replacing the engine coolant.
Engine Oil Viscosity:
Manual will specify viscosity grade (e.g., SAE 10W-40).
Engine Oil Standard:
Manual will specify API service classification (e.g., API SG or higher).
Coolant Type:
Manual will specify antifreeze/coolant type and mixture ratio (e.g., ethylene glycol based).
Brake Fluid Type:
Manual will specify DOT standard for brake fluid (e.g., DOT 4).
Common Wear Items:
The manual will provide guidance on wear items like brake pads, tires, and CVT belts, with expected lifespans and replacement procedures.
Potential Faults:
Troubleshooting section will address common issues related to fuel injection, ignition, and electrical components based on manufacturer experience.
Manufacturer:
Gilera is an Italian manufacturer with a long history in motorcycle production, known for sporty models. Acquired by Piaggio Group.
Nexus Lineage:
The Nexus series was Gilera's flagship maxi-scooter line, designed for performance and touring. The 300 I.e. represented an evolution with fuel injection.
Manufacturing Location:
Likely Italy, as per Gilera's manufacturing base.
