Question about Sewing Machines
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 hell and I will never stop hearing about it. Then I will have to emigrate and that is expensive.
Take off the black metal bit that is above the pattern cam (4 screws). beneath you see 2 small screws, inside the metal frame, on each side of pattern cam. Take them out. Spin the pattern cam until you see one screw in the cam itself. Take that out too. Now you can push the splint out which holds the cam.
Posted on Sep 08, 2009
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