The Gilera Runner Purejet 50, produced between 2003 and 2004, is a high-performance 50cc scooter designed for sporty riding. It stands out with its agile handling, striking design, and innovative Purejet technology, which features a liquid-cooled, 2-stroke engine equipped with electronic fuel injection. This combination offers a balance of performance and efficiency, positioning it competitively within the performance scooter segment. An Italian manufacturer with a heritage dating back to 1909 and now part of a larger group, is known for producing well-engineered and reliable vehicles. This comprehensive service repair workshop manual provides detailed guidance in English for the Gilera Runner Purejet 50. It covers all essential aspects of maintenance, diagnostics, and repair, including the engine, transmission, brakes, electrical systems, chassis, and bodywork. The manual includes step-by-step procedures for scheduled maintenance, troubleshooting common issues, component overhaul, and complete rebuilds. With its high-resolution diagrams and searchable format, this resource is an invaluable tool for owners and technicians alike, aiming to ensure the longevity and optimal performance of the vehicle while offering significant cost savings on service and repairs. 🏷️ Basic Information Identification Make: Gilera Model: Runner Purejet 50 Model Variant: Purejet 50 Production Years: 2003-2004 Codes Engine Code: Piaggio LEA 125 (single-cylinder, 2-stroke, Piaggio Hi-PER1). 👋 Introduction Market Position Segment: Performance 50cc scooter segment. Competitive Analysis Key Competitors: Aprilia SR50, Yamaha Aerox 50, Piaggio NRG 50. Key Features Vehicle Attributes: Sporty design, agile handling, liquid-cooled 2-stroke engine with electronic fuel injection (Purejet technology). Value Proposition Savings: Significant cost savings on service, repair, and maintenance compared to dealership labor. Manual Usability Ease Of Use: Designed for ease of use with no prior technical expertise required, though detailed for professionals. 📋 Manual Details Coverage Areas Languages: English Geographic Focus: Global (technical content applicable to all markets) Page Count Estimated Pages: N/A (Digital Download - content depth is comprehensive A-Z) Manual Type Type: Service Repair Workshop Manual Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine diagnostics, overhaul, tuning, fuel injection system, cooling system, lubrication. Transmission: Automatic transmission (CVT), clutch, gearbox components. Brakes: Front and rear brake system service, hydraulic components, disc brake specifications, bleeding procedures. Electrical: Complete electrical system, wiring diagrams, battery, starter, ignition system, lighting, instrumentation, EFI control unit. Chassis: Frame, suspension (front fork, rear shock absorber), steering system, wheel bearings. Bodywork: Body panels, fairings, seat, storage compartment, maintenance access points. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug, coolant checks, brake fluid checks. Troubleshooting: Diagnostic flowcharts, common fault identification and correction for all systems. Repair: Component removal, installation, adjustment, and overhaul for all mechanical and electrical systems. Rebuild: Full engine and transmission rebuild procedures with detailed specifications. Technical Depth Depth: Comprehensive A-Z coverage, suitable for professional technicians and DIY enthusiasts. Includes advanced diagnostics and detailed specifications. 📊 Manual Specifications File Format Quality: High-resolution, printable diagrams and text. Searchable: Yes (standard PDF search functionality). Print Quality Pages: Printable on demand, allowing for fresh copies of specific pages. Binding Type Type: N/A (Digital Download - no physical binding). Paper Type Type: N/A (Digital Download - no physical paper). ⚙️ Engine Specifications Primary Engine Configuration: Single-cylinder, 2-stroke Cooling System: Liquid-cooled Displacement: 49.4 cc Bore X Stroke: 39 mm x 41.4 mm Power Output Approx: Approx. 5.6 HP (4.1 kW) @ 7000 RPM (varies by market regulations) Torque Approx: Approx. 5.4 Nm @ 6500 RPM (varies by market regulations) Fuel System Type: Electronic Fuel Injection (EFI) - Piaggio Purejet system Fuel Type: Unleaded Gasoline (95 RON recommended) Ignition System: Electronic ignition with CDI (Capacitor Discharge Ignition) and EFI control unit. Lubrication System: Automatic oil injection (separate oil reservoir). 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Clutch: Automatic centrifugal clutch Features Gear Reduction: Integrated gear reduction unit Fluid Specifications Transmission Fluid: API GL-3 or GL-4 gear oil (refer to manual for specific viscosity and capacity, typically SAE 80W/90) 📐 Dimensions Exterior Length: Approx. 1850 mm Width: Approx. 730 mm Height: Approx. 1130 mm Wheelbase: Approx. 1310 mm Weights Dry Weight Approx: Approx. 105 kg Gross Vehicle Weight Rating Gvwr Approx: Approx. 255 kg Cargo Underseat Storage: Sufficient for one full-face helmet (design may vary slightly). Wheels Tires Front Tire Size: 120/70-14 Rear Tire Size: 130/60-13 Front Wheel Size: 14 inch Rear Wheel Size: 13 inch 🛡️ Safety Features Ratings Crash Test Results: N/A (As this is a 50cc scooter, formal crash test ratings like automotive standards are not typically applied or published. Safety relies on design and rider vigilance.) Active Features Braking System: Front and rear disc brakes for effective stopping power. Lighting: Headlight, taillight, brake lights, turn signals for visibility. Passive Features Frame Construction: Steel frame designed for rigidity and stability. Suspension: Telescopic front fork and rear monoshock absorber for rider comfort and control. 💡 Technology Features Infotainment Instrument Cluster: Digital and analog combination display with speedometer, tachometer,...