This workshop service repair manual covers Tohatsu outboard engines within the 2.5hp to 140hp range. Designed for reliability and performance, these water-cooled engines, encompassing both 2-stroke and 4-stroke variants, are engineered for a wide array of marine applications. While specific production years are not detailed, the manual addresses multiple models within this extensive power spectrum, ensuring comprehensive support for owners and technicians alike. This manual provides detailed guidance for the maintenance, repair, and troubleshooting of your Tohatsu outboard engine. It includes essential information on routine maintenance, lubrication schedules, engine service and repair procedures, transmission service, and electrical system diagnostics, complete with wiring diagrams. Furthermore, coverage extends to fuel and cooling systems, exhaust, emission controls, and steering mechanisms, equipping users with the knowledge necessary to keep their engines operating at peak efficiency and to address any potential issues effectively.