This manual covers the Gilera Runner ST, a high-performance sport scooter available in ST125 and ST200 variants. Produced primarily in the late 2000s and early 2010s, the Gilera Runner ST is known for its sporty handling, powerful engines for its class, and distinctive styling, positioning it as a competitive option among other 125cc and 200cc sport scooters. Gilera, an Italian brand now part of the Piaggio Group, has a long history in motorcycle manufacturing, and the Runner line has evolved significantly over the years, with the ST models representing a modern iteration. This comprehensive factory service repair workshop manual provides detailed information for all repairs, servicing, and troubleshooting procedures. It includes hundreds of pages with detailed photos, diagrams, and exploded views covering the powertrain, chassis, electrical systems, braking, fuel system, cooling system, and bodywork. The manual is designed to empower owners and technicians with factory-level knowledge, offering step-by-step instructions for maintenance tasks, diagnostic procedures for common and complex issues, and guidance on component repair and adjustment, ensuring effective self-maintenance and repair.