This workshop service repair manual covers the outboard engine, a 40 horsepower, 4-cylinder outboard drive unit featuring carburetion and an electrical ignition system. Designed for marine applications, this engine includes a battery, charging system, and starting system, along with an oil injection system. The outboard drive unit is equipped with a lower unit and offers jet drive availability, providing robust performance and versatility on the water. This comprehensive English-language manual provides detailed, step-by-step repair procedures, diagnostic information, and troubleshooting guidance, often combined with electrical service. It includes diagrams, drawings, photos, and wiring diagrams to facilitate understanding and efficient repair. The manual is designed for easy navigation with a numbered table of contents and offers full printability and zoom functionality, making it an essential resource for owners and technicians to maintain and repair their outboard engines effectively.