This manual covers the Yamaha 90ETLN outboard motor, manufactured between 1984 and 1987. Designed for reliable performance on the water, this two-stroke engine is engineered with Yamaha's renowned commitment to quality and durability. Its robust construction and efficient design make it a dependable choice for a variety of boating applications, ensuring a consistent and powerful operation for recreational and professional users alike.

The purpose of this service manual is to provide comprehensive information for the maintenance, repair, and technical understanding of your Yamaha 90ETLN outboard motor. It details essential procedures, troubleshooting guides, and technical specifications necessary for proper upkeep. By following the instructions within this manual, owners and technicians can ensure the longevity and optimal performance of the engine, addressing potential issues effectively and safely.