The Hyster C174 (R30XMS) is a Class 2 Electric Motor Narrow Aisle Truck designed for efficient material handling in confined spaces. This forklift model exemplifies robust engineering and reliable performance, featuring advanced components such as a Curtis transistor motor controller, electric power steering, and an electric brake assembly. Its design prioritizes operational effectiveness and durability, making it a valuable asset for logistics and warehousing operations. The inclusion of a master drive unit, DC motor, and comprehensive hydraulic system further underscores its sophisticated capabilities. This Service Repair Factory Manual provides comprehensive English-language documentation for the Hyster C174 (R30XMS). It covers all essential aspects required for maintaining and repairing the forklift, including detailed system component information, diagnostic procedures for motor controllers, maintenance schedules, and repair assistance to enable self-service. The manual includes schematics and diagrams, information on hydraulic and mast systems, and details on fasteners. Its high ease of use, with part correspondence to page numbers, and zoom capability ensure that owners, mechanics, and technicians can efficiently access the information needed to keep this equipment in optimal working condition.