This manual covers the Yamaha 70ETLH outboard motor, manufactured in 1987. Designed for marine propulsion, this outboard motor exemplifies Yamaha's commitment to engineering quality and reliability. Its robust construction and advanced design ensure dependable performance for a wide range of marine applications, making it a trusted choice for boaters. The purpose of this Factory Service Repair Maintenance Manual is to provide comprehensive guidance for the maintenance and repair of your Yamaha 70ETLH outboard motor. It includes detailed information on general procedures, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, electrical system, technical specifications, and troubleshooting. With step-by-step instructions, illustrations, and diagnostic information, this manual is an essential resource for owners, technicians, and mechanics to ensure the optimal performance and longevity of the motor.