This manual covers the Fly 125 and Fly 150 4-stroke scooters, popular models known for their urban commuting capabilities. Manufactured by an Italian company with a rich history in two-wheeled vehicles, these scooters offer reliable performance powered by efficient 4-stroke, single-cylinder engines. The Fly series, introduced in the early 2000s, features models equipped with either 124cc or 149cc engines, typically air-cooled and utilizing a SOHC valve configuration. They are characterized by an automatic CVT transmission with belt drive, front disc brakes, and rear drum brakes, making them a practical choice for daily transportation. This comprehensive Service Repair Workshop Manual is designed to assist owners and technicians in maintaining and repairing the Fly 125 and Fly 150 4T scooters. It provides detailed information on all major vehicle systems, including the engine, electrical system, and chassis components such as suspension and brakes. The manual outlines scheduled maintenance procedures, fluid changes, filter replacements, and component inspections. Furthermore, it offers in-depth guidance on engine disassembly and reassembly, electrical system troubleshooting, brake system repair, and diagnosis of common issues, ensuring the longevity and optimal performance of your scooter.