Introducing the YSE Series marine diesel engines, encompassing models YSE8 through YSE12. These engines are engineered for reliable performance in marine applications, offering robust construction and efficient operation. Designed for demanding maritime environments, the YSE Series provides dependable power, making them a trusted choice for boat owners and operators seeking quality and longevity. This comprehensive Full Service & Repair Manual provides all necessary information for the maintenance, servicing, and troubleshooting of your YSE Series marine diesel engine. It covers all repair procedures, technical specifications, and includes hundreds of detailed photos and diagrams to guide you. This manual is an essential resource for owners and technicians to ensure optimal performance and longevity of the YSE8-YSE12 models.