Trying to find a repair manual for a yanmar marine diesel engine model ysb8

Question edited for clarity.
Question moved from Cars and Trucks.

Free Service manual and the specs
https://www.yanmar.com/media/id/com/maintenance/catalog/100495.pdf


https://www.google.com/search?q=Yanmar+tf90-m+head+bolt+torque+spec

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Question edited for a lot more clarity.
Question moved from Cars and Trucks to make model category.

Gator Diesel service manual Page 59

https://radionerds.com/images/4/4e/Technical_Manual_for_the_M-GATOR%281%29.pdf

https://www.google.com/search?q=John+Deere+Gator+6x4+with+Yanmar+Diesel+engine%2C+head+bolt+torque&

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1. Africa "?
2. NO CAR TOLD 2015 (GDx) X= 6= CYLINDERS.
3. NO YEAR CAR TOLD
4. IS ENGINE TURBO, AS SOME ARE,AND MATTERS.
5. COMMON RAIL DIESEL SURE.
6. Global Diesel Six Cylinder?
7. ENGINE CODE : 2GD-FTV 2015- 2.4 L (2.393 cc) INLINE 6
   

MUST WE GUESS THIS?????????
THE WIKI LIST ON 1GD OR 2 GD.

Applications

Hino 200[14][12]
Toyota Coaster (B70) (2022-present)
Toyota Dyna[11]
Toyota HiAce (H200) (2018-present)[15]
Toyota HiAce (H300) (2019-present)[16]
Toyota Hilux (AN120/AN130) (2015-present)[17]
Toyota Innova (AN140) (2016-present)[18]
Toyota Land Cruiser Prado (J150) (2015-present)[17]
Toyota Fortuner (AN150) (2015-present)[19]
Toyota GranAce/Majesty (H300) (2019-present)[20]
Yanmar 4LV (marinized version of 1GD-FTV)[21][22][23][24][25][26]
Thairung Transformer II

I have no idea what a Yanmar is.

Ask here
http://www.ihcubcadet.com/cgi-bin/discus/discus.pl?pg=topics

Nowhere, Service manuals are several hundred pages. If you own the engine then you need to purchase the manual.

https://marine.cummins.com/marine/public/productListingAjax.action?friendlyUrl=/Auxiliary/6B

I hope this helps!

Im not sure what all you have checked, but I would first determine if the starter is engaging and spinning properly. Put a good socket on the end of the crank with spark plugs out and see if your theory is correct. If I misunderstood and you stated that the flywheel will not turn because you have already tried it then you have a stuck engine, more than likely the piston rings have a little rust. Try filling cylinders with Marvel Mystery oil. Some use diesel and transmission fluid. Fill completely and wait a full day then see if it will turn with plugs out. Repeat the process after a couple of days passed with cylinders full of oil. Do NOT apply a lot of force as this could break piston rings or worse. Make sure plugs are removed as this can put excessive loads on engine parts and rods can be bent. Chances are very good this will work. Be patient.

he main manufacturers of diesel engines for boats: Caterpillar Marine, Cummins Mercruiser, Detroit Diesel, John Deere, MAN, Westerbeke, Mecruiser Diesel, John Deere, Volvo Penta, and Yanmar.

For more information on these manufactures, check out these websites: http://marinefuel.com/marine-engine-manufacturers-diesel/ and http://www.discoverboating.com/buying/types/engines.aspx?id=80

My thought is that it is electrical, since it will not crank. I assume you mean that it will not turn over when you turn the key. I am not certain, but I think that if you have an electrical problem it may shut off the fuel supply as well. There is probably an electrical fuel stop on that machine. Since there is no spark plugs or electrical system to make the engine run, by shorting out the electrical system it will not stop the engine.