This Shop Manual covers the Komatsu PC200EN-6 and PC200EL-6K excavators, equipped with the robust SA6D102E diesel engine. These machines are engineered for demanding construction and earthmoving applications, offering a blend of power, reliability, and efficient operation. With an operating weight of approximately 20,500 to 21,500 kg and a hydrostatic transmission driving a tracked chassis, they are designed for stability and performance across varied terrains. The inline 6-cylinder engine delivers approximately 150 HP, providing ample power for excavation and material handling tasks. This manual serves as a comprehensive resource for maintaining and repairing your Komatsu PC200EN-6/PC200EL-6K and its SA6D102E engine. It details essential maintenance procedures, including lubrication capacities and recommended service intervals, along with troubleshooting guides to address potential issues. Technical specifications, such as hydraulic system performance and undercarriage dimensions, are provided to support accurate diagnostics and repairs. Adhering to the guidelines within this manual will help ensure the longevity, optimal performance, and safe operation of your equipment.