This service and repair shop manual provides comprehensive information for the YANMAR Industrial Diesel Engine TNE Series, covering models 4TNE82, 4TNE84, 4TNE88, 3TNE84T, and 4TNE84T. These inline diesel engines are engineered for industrial applications, emphasizing reliability and robust performance. This manual is designed to assist users in understanding and maintaining these powerful engines, ensuring their continued efficient operation in demanding environments. The purpose of this English-language manual is to offer full professional quality, in-depth coverage of all aspects of service, repair, and maintenance. It includes easy-to-follow, step-by-step instructions, accompanied by pictures and wiring diagrams, to make every repair job straightforward. This resource is invaluable for owners, mechanics, and technicians seeking to perform routine maintenance and complex repair jobs on their YANMAR industrial diesel engines.