This Factory Service Repair Workshop Manual covers the YANMAR 1SM, 2SM, and 3SM Engine series. These engines are engineered for robust performance and reliability, making them a trusted choice for various applications. This manual is designed to provide comprehensive support for the maintenance, servicing, and troubleshooting of these specific engine models, ensuring they operate at peak efficiency. The purpose of this manual is to serve as an indispensable resource for owners, mechanics, and technicians. It contains hundreds of pages of detailed information, including step-by-step instructions, highly detailed exploded diagrams, and essential technical specifications. This content is presented to facilitate efficient repairs and upkeep, ensuring the longevity and optimal functioning of your YANMAR engines.