This manual covers the Hitachi EX220-5 Excavator, a robust machine designed for demanding operational environments. Equipped with ISUZU A-6BG1TQA, A-6BG1 TQA01, and HINO H07D engine options, this excavator exemplifies engineering quality and reliability. Its design prioritizes efficient performance and durability, making it a trusted choice for a wide range of construction and heavy-duty applications. The purpose of this comprehensive service repair manual is to provide detailed guidance for the maintenance and repair of the Hitachi EX220-5 Excavator. It includes essential information on operational principles, troubleshooting, system overviews, component operation, and performance testing. Furthermore, the manual details hydraulic and electrical circuits, connectors, and harness information, alongside workshop procedures for the upperstructure, undercarriage, front attachment, and engine. This resource is intended to empower owners, mechanics, and technicians with the knowledge required to effectively maintain and repair their equipment.