This manual provides comprehensive service and repair information for the Hitachi EX 100. Designed for technicians already familiar with general automotive practices, it details the specific procedures required for the repair and overhaul of this model. The manual emphasizes unique aspects of the Hitachi EX 100, ensuring that maintenance and repairs contribute to its continued reliability and performance. It includes instructions for proprietary components and aims to equip users with the knowledge to maintain a high standard of service. The scope of this manual covers routine maintenance, diagnostic procedures, and detailed repair instructions for various systems, including the fuel, ignition, lubrication, exhaust, electrical, and body systems, as well as engine and transmission overhauls. It highlights important safety information through specific notations like WARNING, CAUTION, and NOTE, and identifies any special tools required for adjustments and repairs. By following the procedures outlined, owners and technicians can effectively maintain, troubleshoot, and repair the Hitachi EX 100, potentially saving time and expense while ensuring professional-quality results.