Bernina 125 Manual - Page 29

Needle breaks Needle is bent. Needle clamp screw is not sufficiently tightened. Needle is too fine for material to be sewn and thread used. Top thread tension is too tight. If the material is removed towards the operator, it happens frequently that the needle will get bent and at the next stitch it will touch the throat plate and break. Therefore, the material should always be removed to the rear. While sewing, however, do not pull the material too much to the rear. Cheap cotton, irregularly twisted or even containing knots, is used. One knot only may break the needle and in certain cases even damage the throat plate. Thus you are risking to pay much more than the additional price for a first class thread. Machine runs slowly Machine is insufficiently oiled (not the motor, which on the contrary should be oiled very seldom in order to prevent oiling-up the brush). Use of unsuitable oil, that is not free of resin and acid and got sticky. Remnants of thread are in the shuttle race. If the sewing machine has been standing in a cold room, it should be opened and brought in a warm room about an hour before use, so that it can warm up to room temperature and the oil in the bearings will again become fluid. 54 The factory reserves the right to modify the construction of the machine with respect to cuts and description. 55