This workshop service repair manual covers the Tohatsu 90 HP outboard motor, applicable to all models, engines, trim, and transmission types. Tohatsu engines are recognized for their engineering quality and reliability, designed to provide dependable performance in various marine applications. This manual is an essential resource for understanding and maintaining the robust design of your Tohatsu 90 HP outboard. This comprehensive English-language manual provides detailed information for owners, mechanics, and technicians. It includes step-by-step repair procedures, routine maintenance schedules for systems such as fuel, lubrication, cooling, and the powerhead, as well as specific guidance on the lower unit, gearcase, and trim and tilt mechanisms. Furthermore, the manual offers detailed troubleshooting for electrical systems, boating safety information, technical specifications, wiring diagrams, and numerous illustrations to ensure accurate and efficient maintenance and repair.