This manual pertains to the Clark NP Series NP 15-20-12D Forklift, covering a range of production years. The NP Series is engineered for reliable material handling operations, featuring robust construction and efficient performance. While specific details regarding engine type and transmission are not fully elaborated here, the forklift is designed to meet the demanding requirements of industrial environments, emphasizing durability and operational effectiveness. The purpose of this Factory Service/Repair/Workshop Manual (SM-535) is to provide comprehensive guidance for the maintenance and repair of your Clark forklift. It includes detailed information on vehicle systems such as the frame, controls, electrical, hydraulic, mast, tires, shielding, and jacking/hoisting procedures. The manual offers step-by-step instructions, exploded diagrams, troubleshooting guidance, and specification tables, enabling owners and technicians to effectively service and maintain the vehicle.