This manual covers the HITACHI EXCAVATOR ZX ZAXIS 70, 70LC, 80SB, 80SBLC, and 85US models. These excavators are engineered for demanding operational environments, offering robust performance and reliability. Their design prioritizes efficiency and durability, making them suitable for a wide range of construction and industrial applications. This comprehensive service manual provides detailed information essential for the maintenance and repair of your HITACHI EXCAVATOR. It includes technical specifications, diagnostic procedures, and step-by-step instructions for various systems such as the engine, fuel system, cooling system, electrical system, and drivetrain. This resource is invaluable for owners, technicians, and mechanics seeking to ensure optimal performance and longevity of their equipment.