This workshop manual covers the Komatsu Diesel Engine 125-2 Series. Designed for robust performance and reliability, these engines are engineered to meet demanding operational requirements across various industrial and heavy-duty applications. Their construction emphasizes durability and efficiency, ensuring consistent power output and longevity under challenging conditions. This manual provides comprehensive information to understand and work with the 125-2 Series engines.

The purpose of this manual is to serve as a complete reference for maintenance, repair, and technical understanding of the Komatsu Diesel Engine 125-2 Series. It details essential procedures, diagnostic techniques, and specifications necessary for proper upkeep and troubleshooting. By following the guidelines within this document, owners, technicians, and mechanics can effectively maintain the engine's optimal performance, ensure its operational safety, and prolong its service life.