This service manual covers the Nissan Forklift Internal Combustion 1D1 and 1D2 Series, including detailed information for the K15, K21, K25 Gas/LPG engines and the QD32 Diesel engine. These forklifts are engineered for reliability and efficient operation in various industrial environments. The comprehensive documentation provided ensures that users have access to the necessary technical data to maintain these robust machines at peak performance. This manual provides extensive guidance for maintenance and repair procedures. It includes sections on general information, engine mechanics, transmission, braking systems, hydraulic systems, and electrical components, among others. The detailed illustrations and step-by-step instructions are designed to assist both novice users and experienced technicians in performing all service and repair tasks accurately and efficiently, ensuring the longevity and proper functioning of the Nissan Forklift.