This manual covers the HITACHI EX225USR, EX225USRLC, EX225USRK, and EX225USRLCK excavators. These models are designed for robust performance in various construction and earthmoving applications. Their engineering emphasizes durability and operational efficiency, making them reliable choices for demanding work environments. The inclusion of multiple variants suggests a focus on adaptability to different operational needs and site conditions. The purpose of this comprehensive manual is to provide detailed information for the maintenance, repair, and understanding of these HITACHI excavator models. It includes essential sections on parts cataloging, enabling users to identify and procure the correct components for servicing. This guide is an indispensable resource for technicians, mechanics, and owners seeking to ensure the optimal performance and longevity of their equipment through accurate part identification and maintenance.