Thank's for help swoop223!
I found a serial number in engines cylinderblock and it is:
4D95L-19117. So it is a Yanmar engine?
Does anyone have details on this type of engine?

Side of the transmission case is casted number 3EB-15-1111.
Obviously this is case's part number?
Does somebody know where is the real serialnumber, is it on left or right side?

Btw, what do You mean that oil type is TO? Is it Transmission Oil, in other words ATF ?

I'm still looking for pictures or repair manual of this type of transmission...

- Gary -