Folder camera repair

In another post I was asking about folder 120 cameras and today I found one at the back of a cupboard, which I think someone gave me some years ago. It is a Royal made in Germany and the lens is a 1:3.5 /7.5cm Enna Werk Munchen Ennagon. The lens looks in surprisingly good condition, but can’t see any evidence of an iris diaphragm opening and closing when I move the aperture lever. The coupled rangefinder seems to work and it has a lever wind which I think is also supposed to cock the shutter. However, the shutter does not work and also I can’t seem to get the empty spool out the back.

Any advice on repair please? Could I attempt this myself?

Open the back of the camera and look, the iris is behind the shutter. Is there a cocking lever on the shutter itself? You will have to pull either a knob on the camera bottom or the wind knob to remove the spool. Could you post pix of the camera.

Rick A said:

Open the back of the camera and look, the iris is behind the shutter. Is there a cocking lever on the shutter itself? You will have to pull either a knob on the camera bottom or the wind knob to remove the spool. Could you post pix of the camera.

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Thanks Rick, you are quite right and I did look there initially, but missed it. Aperture working fine.