The Gilera Runner VX125, produced from 2001 to 2004, is a sporty 125cc scooter renowned for its agile handling and aggressive styling, designed for urban commuting and spirited riding. Featuring a 4-stroke, liquid-cooled, single-cylinder engine with electronic fuel injection, it delivers approximately 14-15 HP, offering a dynamic performance experience within its class. The Runner VX125 stands out with its robust chassis, effective braking system, and a design philosophy that prioritizes rider engagement, making it a compelling choice for those seeking performance and Italian flair in a scooter. This comprehensive service repair workshop manual provides detailed instructions and specifications for the Gilera Runner VX125 covering the years 2001 through 2004. It encompasses all essential aspects of maintenance, repair, and troubleshooting, including engine overhaul, fuel and ignition systems, transmission, brakes, suspension, steering, electrical systems, and chassis components. With step-by-step procedures and diagnostic guidance, this manual is an indispensable resource for owners, home mechanics, and professional technicians to ensure the optimal performance, reliability, and longevity of their Gilera Runner VX125. 🏷️ Basic Information Identification Make: Gilera Model: Runner VX125 Years Covered: 2001, 2002, 2003, 2004 Codes Engine Code Range: M08, M38 (typical for 125cc Piaggio LEADER engine family) 👋 Introduction Market Position Vehicle Segment: Sport Scooter (125cc category) Competitive Analysis Key Competitors: Piaggio NRG, Aprilia SR, Yamaha Aerox, Malaguti F12 (within the 125cc sport scooter segment of the early 2000s). Key Features Design Philosophy: Designed for sporty performance and agile handling, often with a focus on aggressive styling and performance-oriented components. Manual Value Proposition Target User: DIY enthusiasts, home mechanics, professional technicians seeking detailed repair and maintenance information. 📋 Manual Details Coverage Areas Coverage Scope: Complete factory service repair workshop manual Page Count Estimated Pages: Hundreds of pages (specific count not provided, but implied to be comprehensive) Manual Type Type: Service Repair Workshop Manual Language Language: English (implied by product description, typical for this type of manual) Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, top-end rebuild (cylinder head, piston, rings), bottom-end rebuild (crankshaft, connecting rod, bearings), valve adjustment, timing chain replacement, lubrication system, cooling system. Fuel System: Fuel injection system (throttle body, injectors, sensors), fuel pump, fuel filter, fuel tank, carburetor (if applicable to specific sub-models/regions within this range). Ignition System: CDI unit, ignition coil, spark plug, stator, wiring diagrams for ignition. Transmission Drivetrain: Automatic Transmission (CVT) - clutch, variator, drive belt, torque converter, gear reduction unit, lubrication. Brakes: Front and rear brake system servicing (disc brakes), brake fluid replacement, caliper overhaul, master cylinder servicing, brake hose inspection and replacement, ABS system troubleshooting (if equipped). Suspension Steering: Front fork (telescopic) overhaul, rear shock absorber replacement, steering head bearing service, swingarm maintenance. Electrical System: Starter motor, battery, charging system (alternator/stator), lighting (headlights, taillights, indicators), horn, dashboard instrumentation, wiring diagrams, troubleshooting electrical faults. Chassis Bodywork: Frame inspection, body panel removal and installation, seat removal, fairing components, lighting assembly, storage compartment access. Procedures Included Routine Maintenance: Oil changes, filter replacements (oil, air), spark plug replacement, coolant checks and top-up, brake fluid checks, tire pressure checks, drive belt inspection. Troubleshooting: Diagnostic procedures for common issues, symptom-based troubleshooting guides, electrical fault finding, engine performance problems. Repair Overhaul: Step-by-step instructions for component disassembly, repair, and reassembly of all major vehicle systems. Diagnostic Tools: Information on specific diagnostic tools or methods recommended for the vehicle. Technical Depth Depth: Comprehensive, covering basic to advanced repairs, including engine rebuilding and detailed electrical diagnostics. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Printable (single pages or entire manual) Binding Type Binding: Digital Download (No physical binding) Paper Type Paper Type: N/A (Digital format) Compatibility Device Compatibility: Windows and MAC computers, tablets, and smartphones. Licensing Usage License: Lifetime use, no expiry dates, usable on multiple devices. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, liquid-cooled, single-cylinder Displacement: 124 cc (cubic centimeters) Performance Horsepower Range: Approximately 14-15 HP (subject to specific regional regulations and tuning) Torque Range: Approximately 10-11 Nm (subject to specific regional regulations and tuning) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) - typically Piaggio's PFI system for this era. Engine Internals Bore X Stroke: Approx. 52 mm x 58.6 mm (typical for Piaggio LEADER 125 engine) Cooling System Cooling Type: Liquid-cooled with radiator and fan Lubrication Oil Type: Synthetic 4-stroke motorcycle oil, e.g., API SG/SH/SJ or higher, JASO MA, viscosity typically 5W-40 or 10W-40. (Refer to manual for exact specification) Engine Components Valve Train: 2-valve SOHC (Single Overhead Camshaft) 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Optional Optional Transmissions: N/A (CVT is standard) Features Variator Rollers: Information on variator roller weights and their effect on acceleration/top speed. Drive Belt Replacement: Service procedures for variator drive belt inspection and replacement, including torque specifications for pulleys. Lubrication Gear Reduction Oil: Specification and replacement procedure for gear reduction box oil (typically...