This camera has a problem with setting the shutter. A complete wind does not set it, so you can never take a picture … hmm, sounds like something is not coupling correctly.
The first thing you have to do … and you already know this … is to remove the leatherette. Take off the one back/strap holder arm before removing. With the one that I have here it was fairly easy to peel the leatherette off without damaging it. Take your time.
Push out the winding arm pin. Remove the arm and the four items that go with it.
Now you can unscrew the plate.
The rotary disc for the winding arm it attached with a circular nut.
Note the position of the golden arm.
Unscrew it and remove the stuff underneath it.
Remove the spring from the counter reverse lever (right), remove screw and take out arm.
Remove the 12/24 exp indicator plate, first pull off the two springs.
Pull out the silver gear.
The counter change gear arm (bottom) is the next to go.
The counter dial has a spring loaded screw in the middle. Take that off with the dial and the dial plate underneath it.
The counter reverse lever (top) is held on by one screw on the right. Slightly lift the arm on the left to pop it off for removal.
One screw holds the winding stopper arm (centre) , and you should release one arm of the spring.
The middle golden gear (bottom) has one pin screw in the middle that is unscrewed clockwise … very important.
Now you can remove the winding assembly by taking out the four screws.
Now you can see the shutter cocking arm … and in my case it is bent upwards. This means that it will never push down to its full distance.
You can try to rebend it back into shape.
If you want to take that part out you will need to remove the front lens/shutter component.
Here is my bad attempt at bending the arm down … which actually caused more metal fatigue, so when I put it back in it bent itself out of shape again.
Note: on the back side of this part is a riveted switch that prevents double exposures … do not damage this part, as it will cause a lot of headaches. If this part does not freely move, the winder will be in a locked position after the shutter is released. I am guessing this is why some people force the winder and bend the arm.
As I mentioned before, the Yashica Mat-EM has the exact same part (just not golden) so you can just replace it.
When putting back together you should be very careful that the arm is positioned above the shutter release mechanism.
You will also need to reload the spring on the counter dial. If the counter dial is not spinning freely, then loosing the screw and move the dial around so it sits properly.
… and be aware of the little springs that are all over the place.