This service manual provides comprehensive information for the Nissan Forklift J01 and J02 Series, specifically covering models equipped with H15, H20-II, and H25 LPG engines, as well as TD27 and BD30 diesel engines. These forklifts are engineered for demanding industrial applications, emphasizing reliability and operational efficiency. This manual is designed to assist users in understanding and maintaining the robust construction and advanced systems integral to the performance of these vehicles. The purpose of this manual is to serve as a definitive guide for owners, mechanics, and technicians. It details essential procedures for maintenance, service, and repair across a wide range of vehicle systems, including the drivetrain, braking, steering, hydraulic, and loading mechanisms. Furthermore, it offers in-depth coverage of engine-specific components and systems for both LPG and diesel variants, ensuring that all aspects of vehicle upkeep are thoroughly addressed. Regular use of this manual will facilitate proper upkeep, helping to prevent premature failures and unnecessary repair costs.