This manual covers the Johnson Evinrude 18 Hp outboard motor, spanning production years from 1956 through 1970. These engines are known for their robust construction and reliable performance, making them a popular choice for a variety of marine applications. This guide provides comprehensive information to ensure the optimal operation and longevity of your Johnson Evinrude 18 Hp motor. The purpose of this service manual is to provide detailed instructions for the maintenance, repair, and troubleshooting of the Johnson Evinrude 18 Hp outboard motor. It includes information on safety procedures, tuning, powerhead, fuel and ignition systems, electrical components, accessories, lower unit, and hand starter. This manual is designed for owners, mechanics, and technicians, offering step-by-step guidance, diagrams, and specifications to assist in all service and repair procedures.