This manual covers the Johnson Evinrude 9.9 HP outboard motor manufactured between 1965 and 1978. These engines are known for their robust construction and reliable performance, making them a trusted choice for a variety of boating applications. Their straightforward design facilitates efficient operation and maintenance, ensuring consistent power delivery for recreational and utility use. The purpose of this comprehensive service manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your Johnson Evinrude 9.9 HP outboard motor. It includes essential technical specifications, step-by-step repair procedures, diagnostic information, and safety precautions. This resource is designed to assist owners, technicians, and mechanics in keeping the engine in optimal working condition.