This workshop service repair manual provides comprehensive information for the Iseki E393 & E3221 tractor engines. These 3-cylinder, liquid-cooled diesel engines are designed for reliable performance in various agricultural and utility applications. Their robust construction and straightforward engineering contribute to their reputation for durability and efficiency. This manual covers essential details for understanding and maintaining these dependable power units. The purpose of this English-language manual is to serve as a definitive resource for owners, technicians, and mechanics. It details critical maintenance procedures, diagnostic and troubleshooting steps, and technical specifications necessary for optimal vehicle operation and longevity. By following the guidelines within this manual, users can ensure their Iseki tractor engines remain in peak condition, addressing potential issues proactively and performing necessary repairs with confidence.