This manual covers the Yanmar SKE Series, an internal combustion engine family designed for robust performance and reliability. While specific production years are not detailed, the SKE Series represents a commitment to engineering quality, offering dependable power for various applications. The inclusion of a Power Take Off (PTO) system highlights its versatility, making it suitable for a wide range of industrial and agricultural tasks where consistent power delivery is essential. This comprehensive factory service and repair manual is presented in English and provides essential information for maintaining and repairing your Yanmar SKE Series engine. It details general servicing procedures, including a list of approved oils, and covers troubleshooting diagnostics for common issues. The manual is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the engine through clear instructions and technical specifications.