The Prima SF 50, also designated as SF50, is a lightweight scooter designed for urban commuting and recreational use. This model, part of an established line of scooters, features a robust two-stroke, single-cylinder engine with forced air cooling, typically displacing 49cc. Known for its value and reliability, the Prima SF 50 offers a user-friendly experience with its automatic Continuously Variable Transmission (CVT) and a practical design suitable for a variety of riders. While specific production years are not detailed, the SF50 platform has been a consistent offering, reflecting a commitment to producing dependable and accessible two-wheeled transportation. This comprehensive English-language service manual provides in-depth repair and maintenance information for the Prima SF 50. It covers all essential systems, including the engine, CVT transmission, electrical components, brakes, and suspension, offering detailed procedures for diagnostics, troubleshooting, rebuilding, and routine maintenance. The manual is designed for professional technicians and experienced DIY mechanics, featuring expert-level detail, extensive illustrations, and clear, step-by-step instructions. By following the guidance within this manual, owners and technicians can effectively maintain, repair, and restore their Prima SF 50 to optimal performance and ensure its longevity.