This comprehensive service manual covers the Nissan OP series forklifts, including the OPM, OPH, OPC, and OPS models. Engineered for reliability and efficient operation, these forklifts are designed to meet a variety of material handling needs. The manual provides detailed information to ensure these machines perform optimally throughout their service life, reflecting Nissan's commitment to quality and performance in industrial equipment. This manual serves as an essential resource for owners, mechanics, and technicians. It details general information, special tools, maintenance and service procedures, and in-depth coverage of critical systems such as the body frame, chassis, driveline, mast, steering, hydraulics, lift cylinder, electrical system, and brakes. With clear instructions, diagrams, and illustrations, this guide facilitates accurate diagnosing, servicing, and troubleshooting, empowering users to maintain and repair their Nissan OP series forklifts effectively.