This manual covers the Hyster B455 forklift, including models W20ZR and W30ZR. As a Class 3 Electric Motor Hand Truck, this industrial equipment is designed for efficient material handling in various operational environments. The Hyster brand is recognized for its robust engineering and reliable performance, ensuring that this forklift series meets demanding workplace requirements. Its electric DC motor and ZAPI controllers contribute to its operational effectiveness and power. This comprehensive service repair factory manual, written in English, provides detailed information essential for the maintenance and repair of your Hyster forklift. It covers critical areas such as periodic maintenance, motor maintenance, industrial battery care, and the complete hydraulic system, including lift and tilt cylinders. Furthermore, the manual details the brake system, electrical system, frame structure, mast repair, steering mechanism, and master drive unit. Technical specifications, fastener types, and diagrams are also included, offering a complete resource for owners, mechanics, and technicians.