I have a V555M, not the turbo version but I THINK the owners manual is the same.
It covers several similar engines although not all are the same.
THe parts manual and service manuals will be somewhat different.
Go to Boat Diesel Forums. There are owners manuals in the PDF files on the L.H. side of the main page when you log in. There is also a parts manual both of which I downloaded many years ago now. Other have loaded more info and duplicates.
You will need to join the forum for $25 to gain access allowing you to download some of the info at a time. If you want all of it at once I think the membership is $50 to allow that.
Have lots of paper and a decent printer as there is a lot of info. Also a bunch of time.
I will add that manuals , both owners and parts, may be available from Ebay but only when an owner makes them available. I have gotten stuff , specialty tools, other manuals that way. Just be patient as they only appear from time to time now.