This manual covers the Yanmar 4LHA-STE Series marine diesel engines, designed for sterndrive applications. This series includes multiple variants such as STZE, STP, STZP, DTE, DTZE, DTP, DTZP, HTE, HTZE, HTP, and HTZP. These inline 4-cylinder engines offer robust performance, with power outputs ranging from 125 HP to 165 HP, and feature a displacement of 2.385 L. Engineered for reliability and efficiency, these water-cooled engines utilize a forced lubrication system with a wet sump and direct fuel injection, making them a dependable choice for marine propulsion.

The purpose of this comprehensive Service Workshop Repair Manual is to provide detailed guidance for the maintenance, repair, and technical understanding of the Yanmar 4LHA-STE Series engines. It covers essential information including engine specifications, lubrication requirements, fuel system details, and maintenance schedules. Owners, mechanics, and technicians will find the procedures and technical data invaluable for ensuring the optimal performance, longevity, and safe operation of their Yanmar sterndrive marine engines.