Do it yourself books

Volvo Penta diesel engines 22 series.
Detailed list of engine designations covered.

7737979 English
7737981 Swedish
7737987 Finnish
7737982 German

Volvo Penta D1-D2 series
Detailed list of engine designations covered.

7747601 English
7747602 Swedish
7747603 Finnish

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Example of operations covered in the books(oil cooler cleaning)