This manual covers the Tohatsu TLDI 70B and 90B outboard motors, part of the TLDI Series. These engines are known for their direct injection technology and water-cooled systems, providing efficient and reliable power for marine applications. The 70B model delivers 70 horsepower, while the 90B model offers 90 horsepower, both featuring a 3-cylinder configuration and an outboard lower unit drive system. This comprehensive Service Repair Workshop Manual in English provides detailed information for maintaining and repairing your Tohatsu outboard. It includes sections on complete disassembly, step-by-step instructions, troubleshooting diagnostics, and coverage of key components such as the power unit, electrical systems, lower unit, power trim and tilt, and tiller handle. Additionally, the manual covers installation on a boat and essential inspection and maintenance procedures, including test run inspections after servicing, ensuring optimal performance and longevity of your engine.