Need help to identify engine for a friend of mine, Aloizio Bats Dutra
 

Dear Folks
A friend of mine, Aluizio Dutra received as a gift the engine pictured below
The engine appears to be russian or ukranian and appears to be very well done
We are asking help here among the group in order to to try to identify this one, as which is the brand from it, origin and if available digital a copy from the manual
Any info will be very welcome
Thanks to all and soft landings
Carlohttps://cimg3.ibsrv.net/gimg/www.rcu...6a85db3679.jpg
https://cimg7.ibsrv.net/gimg/www.rcu...0c3f0ae7f7.jpg
https://cimg8.ibsrv.net/gimg/www.rcu...796978dffe.jpg
https://cimg3.ibsrv.net/gimg/www.rcu...1a54b35eef.jpg

Don't know for sure. The wife says the blurry last picture might be pronounced Sokol. She thinks it may be a bird. It's been 50 years since she read that language. The K thing might be wrong. T 2.5 D and BGN. Probably a 2.5 or .15 cu. in. I am sure someone else knows much more about it. Any instructions will likely be cyrillic as well.

Thanks so much by your very nice help my friend
All the best for you

Just googled Sokol. It seems to be a peregrine falcon. Good name for a motor.