This manual covers the British Seagull 170 and 125 outboard motors. These engines are known for their robust design and reliability, making them suitable for a variety of marine applications. The 170 model offers approximately 1.7 HP, while the 125 model provides around 1.25 HP, both featuring a straightforward outboard gearbox with forward and neutral gears. Their classic engineering ensures dependable performance for enthusiasts and professionals alike. The purpose of this English-language Illustrated Parts Manual is to provide a comprehensive resource for identifying and sourcing spare parts for your British Seagull 170 and 125 outboard engines. It includes detailed exploded views of every component, ensuring precise identification of each nut and bolt. This manual is an essential tool for owners, mechanics, and technicians to maintain the operational integrity and longevity of these classic marine engines.