This manual covers the Yamaha 150A, 150F, L150F, D150H, 175D, 200F, L200F, 200G, and 225D outboard motors. These models represent robust engineering designed for reliable performance in marine applications. Their construction emphasizes durability and efficiency, making them a trusted choice for a variety of boating needs. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed guidance for the maintenance and repair of the specified Yamaha outboard motor models. It includes essential information on general specifications, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical systems, complete with wiring diagrams. Furthermore, the manual offers a dedicated section for trouble analysis, equipping owners, mechanics, and technicians with the knowledge to effectively maintain and service these engines.