Hello, my wife's Bernina 707 stops halfway through a complete revolution of the pattern cam. I notice that there is a split in it, which I think causes the machine to seize during a complete cycle of the cam. It can only be freed manually, this lasts only a few seconds. I would like to remove the cam and replace it. There seems to be a shaft pin keeping it in place, the face of the pin is accessible on the back of the machine. Should this be hammered so it goes back into the machine in order to remove the cam? Of course I need to ensure I do not damage the machine in the process otherwise life will be h**l and I will never stop hearing about it. Then I will have to emigrate and that is expensive.ThanksRaymond
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