This manual covers the Hyundai 15L-7A, 18L-7A, and 20L-7A forklift trucks, including their Gas/LPG variants (15L(G)-7A, 18L(G)-7A, 20L(G)-7A) from the 7A Series. These industrial machines are designed for material handling, offering lift capacities of approximately 1500 kg, 1800 kg, and 2000 kg respectively. Built with Hyundai's reputation for quality and reliability in industrial equipment, these forklifts are engineered for efficient operation in various work environments. The manual provides comprehensive information to ensure these vehicles perform optimally. This factory service repair workshop manual is a highly detailed resource designed for both do-it-yourself owners and experienced mechanics. It covers a wide range of systems including General Information, Power Train, Brake System, Steering System, Hydraulic System, Electric System, and the Mast. Within these sections, you will find in-depth troubleshooting guides, step-by-step disassembly and assembly procedures, operational checks, and adjustment instructions. The manual also includes detailed illustrations and electrical circuit diagrams, making it an indispensable tool for maintaining and repairing your Hyundai forklift truck.