This workshop service repair manual covers the Tohatsu 120 HP outboard motor. Engineered for reliability and performance, this powerful engine is designed to meet the demands of various marine applications. Its robust construction and advanced design ensure efficient operation and durability, making it a trusted choice for boaters seeking dependable propulsion. This comprehensive manual provides detailed instructions and technical information essential for the maintenance and repair of your Tohatsu 120 HP outboard motor. It includes procedures for tune-ups, fuel system service, lubrication and cooling systems, electrical systems with wiring diagrams, and troubleshooting. Mechanical aspects such as powerhead overhaul, midsection and lower unit service, gearcase, and trim/tilt systems are thoroughly explained. Additionally, the manual contains information on hand rewind starter service, tightening torques, boating safety, tools and equipment, a glossary of terms, and a master index, all presented in English for clarity and ease of use.