The Gilera Runner Purejet 50, produced between 1998 and 2005, stands as a high-performance 50cc scooter celebrated for its sporty styling and agile handling. Equipped with a liquid-cooled, 2-stroke Piaggio Hi-PER 2 Pro engine featuring Electronic Fuel Injection (Purejet), this model offers advanced technology for its class. Its robust engineering and reputation for reliability make it a standout choice for enthusiasts and those seeking an engaging riding experience. The Runner series, with its Italian heritage, has consistently delivered performance-oriented scooters, and the Purejet 50 is a testament to Gilera's commitment to quality and innovation in the competitive scooter market. This comprehensive service manual provides essential information for the maintenance, repair, and troubleshooting of the Gilera Runner Purejet 50. It covers all critical areas, including detailed engine mechanicals, the Purejet fuel injection system, cooling, transmission, braking, suspension, and electrical systems. The manual includes routine maintenance procedures, diagnostic guidelines, repair instructions, overhaul procedures, and technical specifications such as torque settings and clearances. Designed for owners and professional technicians, this 257-page document ensures that the vehicle can be kept in optimal condition, preserving its performance and longevity. 🏷️ Basic Information Identification Make: Gilera Model: Runner Purejet 50 Year: 1998-2005 Product Type: Service Manual 👋 Introduction Market Position Segment: High-performance 50cc scooter Target Audience: Enthusiasts, DIY mechanics, professional repair shops Competitive Analysis Competitors: Piaggio Zip SP, Yamaha Aerox 50, Aprilia SR50 Key Features Vehicle Focus: Sporty styling, agile handling, advanced technology for its class (Purejet engine) Manual Value Proposition: Provides factory-level diagnostic and repair information, essential for maintaining peak performance and reliability 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service, repair, and maintenance Secondary Coverage: Diagnostic procedures, electrical system troubleshooting Page Count Total Pages: 257 Manual Type Type: Original Factory Service Repair Workshop Manual Language Language: English Format File Format: PDF Download Compatibility Operating Systems: All Versions of Windows & Mac Requirements Software Requirements: Adobe PDF Reader 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, overhaul, timing, lubrication Engine Management: Fuel system (Purejet injection), ignition system, starting system, charging system Cooling System: Radiator, water pump, thermostat, coolant flow Transmission: Automatic transmission (CVT), variator, clutch, gearbox Braking System: Front and rear brakes (disc/drum or disc/disc), hydraulic system, brake fluid Suspensions: Front fork (telescopic), rear shock absorber(s), swingarm Chassis And Bodywork: Frame, body panels, seat, storage, lighting, instruments Electrical System: Wiring diagrams, battery, lights, horn, starter motor, ignition switch, sensors Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, brake adjustments, tire pressure Diagnostic Procedures: Troubleshooting guides for common problems, fault code interpretation (if applicable) Repair Procedures: Step-by-step instructions for component replacement and repair Overhaul Procedures: Detailed instructions for complete engine and transmission rebuilds Pre Delivery Inspection: Checks and adjustments required before customer delivery Technical Depth Diagnostic Tools: Information on specialized diagnostic tools and their use Special Tools: Identification and application of specialized tools required for specific repairs Torque Specifications: Detailed torque settings for all fasteners and critical components Clearances And Tolerances: Engine internal clearances, bearing tolerances, and other critical measurements Wiring Diagrams: Comprehensive and detailed electrical schematics 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable PDF Print Quality Readability: High, designed for professional technician use Diagram Clarity: Excellent, critical for accurate repair Binding Type Binding: Not applicable (PDF Download) Paper Type Paper: Not applicable (PDF Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, Piaggio Hi-PER 2 Pro engine with Electronic Fuel Injection (Purejet) Displacement: 49.4 cc Bore X Stroke: 39.0 mm x 41.4 mm Compression Ratio: 11.0:1 (typical for Purejet) Performance Horsepower: Approx. 5-6 HP (at the crankshaft, depending on specific model year and regulations) Torque: Refer to manual for specific torque figures Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) - Piaggio Purejet system Fuel Type: Unleaded gasoline (RON 95 recommended) Ignition System Ignition Type: Electronic ignition with variable timing Lubrication Oil System: Separate oil injection system for 2-stroke oil 2 Stroke Oil Type: High-quality synthetic 2-stroke scooter oil (API TC, JASO FD certified) 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Features Variator: Variable speed pulley system Clutch: Centrifugal automatic clutch Fluid Specifications Gearbox Oil Type: SAE 75W/80W API GL-3 or GL-4 transmission oil (verify with manual for exact specification and capacity) 📐 Dimensions Exterior Length: Approx. 1870 mm (verify with manual) Width: Approx. 760 mm (verify with manual) Height: Approx. 1120 mm (verify with manual) Weights Dry Weight: Approx. 100 kg (verify with manual) Gross Vehicle Weight: Refer to manual Tires Front Tire Size: 120/70-13 (typical, verify with manual) Rear Tire Size: 130/60-13 (typical, verify with manual) Wheels Wheel Type: Alloy wheels 🛡️ Safety Features Ratings Crash Test Results: Not applicable (scooter segment) Active Features Braking System: Hydraulic disc brakes front and rear (or front disc, rear drum depending on variant) Lighting: Headlight, taillight, turn signals for visibility Passive Features Chassis Construction:...