This manual covers the Hyster D114 (E25-40XM (Pre-SEM)) counterbalanced internal combustion forklift. Designed for industrial applications, this robust machine features a three-speed power shift transmission with an autoshift transmission controller, planetary gear drive axle, and a steering axle. Its frame construction forms the base for the mast, axles, wheels, counterweight, and power source, which can utilize LP gas, CNG gas, gasoline, or diesel fuel depending on the specific variant. The forklift's systems include a cooling system, LPG fuel system, hydraulic system with a main control valve and tilt cylinders, brake system, steering system, and an electrical system with an alternator, starter, and high energy ignition. Operator comfort and safety are addressed through the cab design, which includes an instrument panel, and an overhead guard for protection. This comprehensive service shop manual provides detailed information for the maintenance and repair of the Hyster D114 (E25-40XM (Pre-SEM)) forklift. It covers essential areas such as periodic maintenance procedures, troubleshooting guidance, and technical specifications including capacities. The manual includes detailed photos, drawings, and exploded diagrams to aid in understanding complex components like the mast assembly and empty container handling attachments. It also addresses fastener types, using both inch (SAE) and metric standards. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining the reliability and performance of their equipment.