This manual provides comprehensive service and repair information for 2-Stroke Outboard Motors manufactured between 1965 and 1989. Covering a wide range of models from 90HP to 300HP, including specific engine displacements up to 3.4L, these outboard motors are engineered for reliable performance in various marine applications. This guide is an essential resource for understanding the intricacies of these robust engines. This repair manual is designed to assist owners, technicians, and mechanics in performing all necessary maintenance and repair procedures. It details routine maintenance, engine removal and installation, fuel systems, lubrication and cooling systems, transmission, steering, and electrical systems. Furthermore, it includes advanced troubleshooting guides and detailed technical specifications, ensuring that users can effectively maintain, diagnose, and repair their outboard motors to factory standards.