The Komatsu PC220-7 Hydraulic Excavator is engineered for demanding work environments, offering robust performance and reliability. Powered by a Komatsu SAA6D102E-2 diesel engine, this machine delivers efficient operation with its turbocharged and aftercooled design, producing a net power of 106 kW. Its hydrostatic transmission ensures smooth power delivery, while the substantial operating weight of 23,000 kg and a standard bucket capacity of 1.0 m³ make it well-suited for a wide range of construction and earthmoving tasks. The excavator's dimensions, including a digging depth of 6655 mm and a reach of 9880 mm, highlight its capability in various project scopes. This Full Service Repair Manual provides comprehensive information for the Komatsu PC220-7 Hydraulic Excavator. It covers essential maintenance procedures, detailed troubleshooting guides, and critical technical specifications, including engine details, transmission operation, hydraulic system capacities, and undercarriage characteristics. The manual is designed to assist owners, mechanics, and technicians in understanding, maintaining, and repairing the excavator to ensure optimal performance and longevity. All content is presented in English for clarity and ease of use.