This manual covers the Hitachi Hydraulic Excavator Zaxis ZX210W-3, designed for demanding construction and industrial applications. Built with Hitachi's renowned engineering prowess, this model emphasizes robust performance, exceptional durability, and operational efficiency. Its advanced hydraulic system and user-friendly design ensure optimal productivity and reliability in a wide range of work environments, making it a trusted choice for professionals seeking powerful and dependable excavation equipment. The purpose of this comprehensive service manual is to provide detailed information for the maintenance, repair, and technical understanding of the Hitachi Hydraulic Excavator Zaxis ZX210W-3. It includes essential procedures, diagnostic troubleshooting guides, technical specifications, and important safety directives. This resource is invaluable for owners, service technicians, and mechanics, enabling them to effectively maintain the excavator's peak performance and ensure its longevity through proper care and servicing.