This manual covers the Hyster D138 (N40FR, N45FR, N50FA) forklift, a Class 2 Electric Motor Narrow Aisle Truck designed for efficient material handling. Engineered for reliability and performance, these electric forklifts are built to meet the demanding needs of warehouse and industrial environments. Their advanced design and robust construction ensure consistent operation and longevity, making them a valuable asset for any operation requiring precise and powerful lifting capabilities. This comprehensive Service Repair Factory Manual provides essential information for the maintenance and repair of your Hyster forklift. It details scheduled maintenance, component inspections, and specific procedures for critical systems including the EV-100 motor controller, hydraulic systems, brake assembly, and steering mechanisms. With detailed technical specifications, electrical adjustments, and troubleshooting guides, this manual is an indispensable resource for owners, technicians, and mechanics to ensure optimal performance and longevity of the equipment.