manual codes

kat53

New User
I hope someone can help me. I am trying to order a manual for my dad but I don't know which one to buy. We found a tag on his tractor but alot of it is worn off. I can see the following
Model DD212k
Unit 7M4B ( Looks like but if more they're worn off
Engine 7L01B

He is telling me its a 1979. My question is how do I know which to order? All the manuals show three digits like 545 and I cannot find that anywhere.
Thank you for your help!
 
DD212K is the model code. DD2 is a model
535, 1 means diesel engine, 2 is
transmission PTO 540 RPM, K is 6X4 manual
reversing transmission.

7M4B is the date code. 7 means 1977, M is
December, 4 is fourth day of December, and
B is day shift
 
Andy has it covered for the Model and Unit Numbers. The "Engine 7L01B" bit means that the engine was assembled on November 1 1977 during the day shift.
 
(quoted from post at 15:12:45 07/27/21) DD212K is the model code. DD2 is a model
535, 1 means diesel engine, 2 is
transmission PTO 540 RPM, K is 6X4 manual
reversing transmission.

7M4B is the date code. 7 means 1977, M is
December, 4 is fourth day of December, and
B is day shift

Thank you very much. One question so I am clear. He is incorrect that its a 1979 tractor, its actually 1977?
 

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