This workshop repair manual covers the YANMAR 4JM-4JMTE diesel marine engine. Designed for reliability and performance in marine environments, these engines are engineered to provide dependable service for a wide range of applications. This manual is specifically tailored to ensure owners and operators can maintain and repair their YANMAR marine engines effectively. The purpose of this comprehensive English-language manual is to provide detailed guidance on all aspects of service, repair, and maintenance for the YANMAR 4JM-4JMTE models. It includes step-by-step instructions, illustrations, and wiring diagrams to assist with routine maintenance, complex repairs, and troubleshooting. This resource is invaluable for ensuring the longevity and optimal performance of your marine diesel engine.