I have managed to fish out the small black item from inside the lens. Followed guide:
http://mattsclassiccameras.com/how-t...ca-electro-35/ and took it all apart. Will need to double check the focus I guess. I'm not the first in here, screws holding everything together inside the lens were all loose. Just need to sort out the rangefinder and the rewind crank guide. Edit, the rangefinder mirror is missing from its mount, I have a small mirror I can take from a Fujica Auto M rangefinder mech. Will look at it when I'm not so tired.
Might have to come up with another plan for the RF mirror, doesn't want to come of its mount. The camera came with an original 5.6v battery and the shutter does fire. Makes a nice clunk as its co.cked.