This service manual covers the Nissan Forklift Internal Combustion 1F1 and 1F2 Series. These forklifts are engineered for robust performance and reliability in demanding industrial environments. This comprehensive guide provides detailed instructions and illustrations to ensure the optimal functioning and longevity of your equipment. This manual is designed for both do-it-yourself owners and experienced mechanics. It offers in-depth coverage of all major systems, including engine maintenance for K15, K21, K25 (Gas/LPG) and QD32 (Diesel) engines, automatic transmission, braking, steering, hydraulic systems, and the loading mechanism. By following the procedures outlined within, users can effectively maintain, troubleshoot, and repair their Nissan Forklift, ensuring continued operational efficiency and safety.