This manual covers the Nissan Forklift Internal Combustion 1D1 and 1D2 Series, designed for robust industrial material handling. These forklifts are engineered for reliability and efficiency in demanding operational environments. The series includes comprehensive service information for both Gas/LPG engines (K15, K21, K25) and Diesel engines (QD32), ensuring optimal performance and longevity for your equipment. This service manual provides detailed instructions and diagrams essential for maintenance, repair, and troubleshooting. It covers a wide range of systems including the engine, transmission, axles, braking, steering, and hydraulic systems, as well as body and electrical components. By following the procedures outlined within, owners and technicians can effectively maintain their Nissan forklifts, ensuring safe operation and minimizing downtime.