Hello
I have an old suspose to be, A&M/Sachs or Sachs Dolmar 3.7? (it still has some orange paint on the oem case)
How do i tell if it is a true 3.7 ?
The # on the cyl. is a 057/2A
It use to fly me Byron Pitts (it was a lead balloon)
I want to use it for my Ziroli AT6

Thanks