This service manual is for the Hitachi EX 100 M, designed for mechanical technicians familiar with BRP product service procedures. It covers the repair and overhaul of the Hitachi EX 100 M, assuming a strong foundation in general automotive practices. The manual emphasizes product-specific repair procedures to help maintain a reputation for quality service and includes instructions for both Hitachi-manufactured components and proprietary parts, ensuring a comprehensive understanding of their functions and overall performance. The purpose of this manual is to provide the most reliable information to help owners and technicians get the best value from their Hitachi EX 100 M. It contains specifications and procedures comparable to those found in authorized dealer service departments, covering routine maintenance, servicing, diagnostic, and repair procedures. The manual highlights important safety information through WARNING, CAUTION, and NOTE symbols, and details the use of special tools where necessary. It is an essential resource for performing repairs, from simple tune-ups to extensive engine and transmission overhauls, enabling users to maintain their vehicle effectively and professionally.