Kiev-4 sprocket release

[Joao]

Hello
There is some part missing in my Kiev-4 bottom, at the point where the sprockets are release to rewind the film. I made a picture to show how it looks, but I would like to know what precisely is missing there. Not a serious problem anyway, if I push through the central hole with a ball-point pen, I can easily rewind. My other Kiev is a 4-AM and has a different sprocket release mechanism...
Any information about the part that is missing is welcome
Thanks
Joao

 

[xayraa33]

the button plunger is missing from the camera's back bottom in that pic.
you might get major light leak with that gone.

 

[xayraa33]

here is what that button plunger should look like.

 

[Joao]

Thanks a lot, now I know what to look for. And yes, I got some bad lightleaks...
Best regards
Joao