This manual covers the Rotax Engine FR125 MAX & JUNIOR, designed for high-quality performance and reliability. It provides comprehensive information for owners and technicians alike, detailing all factory systems, maintenance procedures, and repair instructions. The included documentation features a wealth of images and wiring diagrams to clearly illustrate disassembly and reassembly processes, ensuring a thorough understanding of the engine's intricate workings. The scope of this manual encompasses essential operational guidance, detailed installation procedures, and a complete parts catalog. It is structured to assist users in effectively maintaining their Rotax engine, troubleshooting potential issues, and performing necessary repairs. By offering detailed technical specifications and safety guidelines, this resource serves as an indispensable tool for ensuring the longevity and optimal performance of the FR125 MAX & JUNIOR engine.