Leica Repair Club the way to adjust the shutter unit of Leica 3f for beginners
In case the 1 second of the shutter speeds seems to be slower or just doesn't work, strain the rear-curtain.
Following the picture, use a screwdriver onto the screw on the front side of the camera body to adjust the rear-curtain.
In addition to that, the screw on the rear side is for the front-curtain.
