This manual pertains to the Tohatsu 90 HP outboard motor, a robust and reliable engine designed for various marine applications. Engineered for performance and durability, this model represents a significant advancement in outboard motor technology, offering exceptional power and efficiency. Its design prioritizes user experience and longevity, making it a trusted choice for boaters seeking dependable propulsion for their vessels. The Tohatsu 90 HP Factory Service Repair Manual provides comprehensive guidance for maintenance, repair, and troubleshooting. It covers essential areas including fuel systems, ignition and electrical components, lubrication and cooling, powerhead overhauls, gearcase maintenance, and tune-up procedures. With detailed step-by-step instructions, diagnostic guides, wiring diagrams, and technical specifications such as tightening torques, this manual equips owners, mechanics, and technicians with the necessary information to ensure optimal performance and longevity of the engine.