This manual covers the Nissan Forklift Internal Combustion 1F6 Series, designed for robust industrial applications. It details comprehensive information for maintaining and repairing these reliable machines, ensuring their continued operational efficiency. The series is engineered for durability and performance in demanding work environments. This service and repair manual provides detailed instructions and diagrams for all aspects of maintenance and repair. It includes sections on the engine, drive unit, brake system, steering system, hydraulic system, and load handling system. Furthermore, it offers specific guidance for the TB42 Gas/LPG engine, the S6S Diesel engine, the 4HK1 Diesel engine, and the 6BG Diesel engine, covering general information, mechanical procedures, electrical systems, troubleshooting, and special tools.