This manual covers the scooter, available in 50cc and 100cc variants, primarily for the 2005 model year. , an Italian manufacturer, is recognized for its high-performance vehicles, and the Quasar line is distinguished by its unique styling and urban practicality. These scooters are designed to offer reliable and efficient transportation, blending Italian engineering with user-friendly features suitable for daily commuting and recreational use. The Quasar line is manufactured in Italy by , a part of the Piaggio Group, ensuring a commitment to quality and performance. This comprehensive service repair manual in English provides detailed guidance for both professional technicians and DIY mechanics. It covers all aspects of the vehicle, from routine scheduled maintenance, such as oil changes and filter replacements, to in-depth engine and transmission rebuilds. Specific sections include diagnostic procedures for common issues, troubleshooting electrical systems, and step-by-step repair instructions for all major components including the engine, fuel system, brakes, suspension, and electrical system. Detailed wiring diagrams and component testing procedures are also included to facilitate accurate diagnostics and repairs, ensuring the longevity and optimal performance of your Quasar.