Get a guided demo that shows common workflows and troubleshooting tips. In this video, we walk through the complete 4JJ1 engine assembly for Hitachi excavators like ZX160-3 and ZX180-3 models. You'll see how this fully assembled industrial engine delivers 73kW power, simplifies installation, and reduces downtime—plus real insights into compatibility, long-term cost benefits, and performance stability for construction equipment maintenance.