This manual covers the Suzuki DF150 and DF175 4-stroke outboard engines manufactured between 2006 and 2010. These engines are known for their robust engineering and reliable performance, featuring water cooling and Electronic Fuel Injection (EFI) for optimal efficiency. Designed for a variety of marine applications, these outboards deliver dependable power, with the DF150 producing 150 HP and the DF175 producing 175 HP. This comprehensive Service Repair Manual in English provides detailed guidance for maintaining and repairing your Suzuki outboard. It includes essential information on periodic maintenance schedules, lubrication specifications for engine and gear oil, and tune-up procedures such as spark plug details, idle speed, and ignition timing. The manual also covers troubleshooting for common issues like starting problems, engine hesitation, and overheating, along with in-depth sections on the electrical system, fuel system, power unit, mid-unit, power trim and tilt system, and lower unit components. Technical specifications, including torque values, recommended tools, and safety precautions, are also thoroughly documented to assist owners, mechanics, and technicians.