yanmar 3YM20 service manual.
Yanmar 3YM20,3YM20C,3YM30,3YM30C,2YM15 and 2YM15C marine diesel engine service manual.
Edition April 2005
File type PDF
This workshop manual guides user through a full engine rebuild, all testing and specifications covered. Servicing and maintenance also covered. It has in depth cover of the marine aspects of engine. Coolant water and raw water flow charts, raw water pumps and heat exchangers. It also has a trouble shooting guide. Electrical system testing,repair and diagnosis, schematics and diagrams.