This workshop service repair manual provides comprehensive information for the Hyundai 35B-9, 40B-9, 45B-9, and 50B-9 Forklift Truck series. These robust machines are engineered for durability and efficiency in demanding industrial and warehouse environments. Hyundai's commitment to quality is evident in the reliable performance and technological integration of these forklifts, designed to support critical material handling operations across various sectors. The manual is tailored for a wide audience, including first-time owners, amateur mechanics, and professional technicians, ensuring that all users can access and understand the information needed to maintain and repair these essential work vehicles. The purpose of this manual is to serve as a complete guide for the maintenance, repair, and troubleshooting of the specified Hyundai forklift models. It covers all major systems, including the Power Train, Brake System, Steering System, Hydraulic System, Electrical System, and Mast System. Within these sections, users will find detailed information on general specifications, periodic replacement items, unit removal and installation, component structure and operation, troubleshooting guides, disassembly and assembly procedures, tests, and adjustments. The manual's comprehensive scope and detailed technical information, including electrical schematics and component-level repair instructions, empower owners and technicians to perform routine maintenance, diagnose faults, and execute repairs effectively, ultimately maximizing the lifespan and operational efficiency of the forklift.