This manual pertains to the Hyster B471 (N50XMA2) narrow aisle electric forklift, a robust piece of equipment designed for efficient material handling in demanding environments. Engineered for reliability and performance, these Class 2 trucks integrate advanced DC electric motor technology and a precise hydraulic system to ensure optimal operation. While specific production years are not detailed, the inherent quality of Hyster engineering is evident in the construction and intended application of these versatile machines. This comprehensive Service Repair Factory Manual provides essential information for the maintenance, repair, and troubleshooting of your Hyster forklift. It covers critical areas including periodic maintenance, electric motor systems, hydraulic components, mast and carriage systems, as well as the electrical system and controllers. Detailed step-by-step repair instructions, diagnostic procedures for SEM traction motor controllers, and technical specifications are included to assist owners, mechanics, and technicians in maintaining the vehicle's peak performance and longevity, ultimately contributing to cost savings.