This manual covers the Yanmar 4TNV98T, a 4-stroke, water-cooled, direct injection diesel engine with a displacement of 3.318 L. Its in-line, vertical cylinder arrangement and compression ignition system are engineered for reliability in diverse industrial and automotive applications. This engine is designed for robust performance and durability, making it a dependable choice for demanding operational conditions.

The purpose of this English-language Service Repair Workshop Manual is to provide comprehensive guidance for the maintenance and repair of the Yanmar 4TNV98T engine. It details full service and repair instructions, including essential information on recommended service intervals, lubrication, and oil specifications. This manual is an indispensable resource for mechanics and service technicians, ensuring proper upkeep and efficient operation of the engine.