This Service Repair Workshop Manual covers British Seagull outboard motors, including models 45, 55, 75, 80, 90, 102, 125, and 170. These engines are known for their robust 2-stroke design, water-cooled impeller systems, and magneto ignition. While specific years are not detailed, the manual addresses a range of displacements and power outputs, from the smaller 75cc, 4.5 HP variants to larger 172cc, 17 HP models. They utilize unleaded petrol mixed with 2-stroke oil and feature a manual recoil starter, tiller handle steering with throttle control, and manual tilt adjustment. The transmission is a direct drive system with a gearcase and propeller shaft, offering forward, neutral, and reverse gears on applicable models. This comprehensive English-language manual provides essential information for maintaining and repairing your British Seagull outboard. It includes detailed step-by-step instructions, exploded diagrams, and troubleshooting guides to assist with routine maintenance tasks such as fuel mix ratios, spark plug selection, impeller replacement, and fuel filter changes. Owners and technicians will find the technical specifications, maintenance schedules, and repair procedures invaluable for ensuring the longevity and optimal performance of these reliable engines.