This manual covers the SX-175 and SX-250 models produced between 1974 and 1976. These motorcycles represent a foray into the dual-sport and off-road market of the 1970s, often leveraging Italian Aermacchi technology. Designed for versatility, these air-cooled, two-stroke machines offered riders a capable option for both on-road and light off-road use. This first-generation series showcases an ambition to expand its product line and appeal to a broader range of riders during a significant period of market evolution. This comprehensive service and repair workshop manual is written in English and designed to assist owners and technicians in maintaining and repairing their SX-175 or SX-250. It provides detailed, step-by-step instructions, diagrams, illustrations, and wiring schematics for all major systems, including engine, drivetrain, chassis, and electrical components. Coverage extends to general maintenance, scheduled service, fluid changes, component overhaul, and troubleshooting procedures, empowering users to perform necessary upkeep and repairs efficiently and effectively.