In my country (mexico) it is very difficult to find this manual. Does anyone from here know where I can get it?
The operators manual? or a service manual? John Deere calls it an "operations and test" manual, that's for diagnosing your problems. Then there are component repair manuals for each component, like engine, transmission, etc. Figure out the type of manual you want, then find the number of that manual, then check the price from Deere ($$$), then use the number to see what's available online or used.
the service manual.
https://www.johndeeretechinfo.com/