This manual provides comprehensive service and repair information for the Hitachi EX100-3 Excavator. Designed for demanding operational environments, the EX100-3 is engineered for robust performance and reliability in various construction and excavation tasks. Its advanced features and durable construction ensure efficient operation and longevity, making it a trusted choice for professionals in the heavy equipment industry. The purpose of this manual is to serve as a definitive resource for maintaining, troubleshooting, and repairing your Hitachi EX100-3 Excavator. It covers essential maintenance procedures, detailed diagnostic steps, and technical specifications necessary for optimal performance and longevity. Owners, technicians, and mechanics will find the clear, step-by-step instructions invaluable for ensuring the continued efficient and safe operation of the equipment.