RE: What engine is this?
I agree with Carlos.Ive had a few sachs and i believe its the 52cc[3.2].
Because of the shape of the transfer port i believe it came from a Sachs Dolmar model 115 chain saw.The model 111 has a straight up and down port.The model 115,has like a nuckle,like yours.
Is there a number 44 in front of any letters anywhere on the cylinder?
If there is, its a 52cc for sure.That number is the size of the cylinder in MMs.
This how to tell what CCs it is.