The Hyster E004 series, encompassing models such as the S70XM, S80XM, S100XM, S120XM, S120XMS, S80XMBCS, S100XMBCS, S3.50XM, S4.00XM, S4.50XM, and S5.50XM, represents a robust line of Class 4 internal combustion engine forklifts equipped with cushion tires. Engineered for demanding industrial environments, these machines are built for reliability and performance, featuring advanced systems like a single-speed powershift transmission, and a comprehensive LPG fuel system. They are designed to handle a wide range of material handling tasks with efficiency and power, utilizing various engine types including GM and Perkins Diesel, supported by sophisticated ignition and fuel delivery systems. This factory repair manual provides comprehensive guidance for the Hyster E004 series forklifts. It covers essential maintenance procedures, detailed troubleshooting support, and critical technical specifications, including information on hydraulic systems, mast and lift components, braking, steering, electrical systems, and cooling systems. The manual also details drive axle, frame, and body components, as well as capacities and other specific data. Written in English, this resource is designed to assist owners, mechanics, and technicians in effectively maintaining, diagnosing, and repairing these vehicles, ensuring optimal operational performance and longevity.