This manual covers the Yanmar 3TNV88XMS, 3TNV88XMS2, 3TNV88XGP, 4TNV88XMS, 4TNV88XMS2, and 4TNV88XGP engine models. These engines are integral components in various industrial applications, including Gehl and Mustang skid steer loaders and asphalt pavers. Yanmar engines are recognized for their robust engineering, reliability, and efficient performance, making them a preferred choice for demanding operational environments. This Illustrated Master Parts List Manual, published in English, provides detailed information essential for identifying and sourcing genuine Yanmar replacement parts. The purpose of this manual is to serve as a comprehensive reference for Yanmar engine parts. It includes detailed listings and illustrations for components such as the cylinder block, gear housing, cylinder head, fuel injection system, lubrication, and cooling systems, among others. The manual also features a numerical index for quick part identification. By offering precise part information, this document assists owners, technicians, and mechanics in maintaining the optimal performance and longevity of their Yanmar engines, ensuring minimal downtime and efficient operation.