If the blades are adjusted too tightly, the puller arm will not be able to fit
between the blades. In this case, it will stop at the cutting edge of the
blades without going between them, or it will move over the top of the
blades. If that is the case, loosen both screws slightly
(counterclockwise), and test with bobbin thread again.
If it still won’t cut, take a close look at the spacing of the cutting
blade themselves. There should be even spacing between the
blades on both sides – if one side looks a little lower than the
other, slightly tighten the screw on the opposite side.
Puller Arm Bend Adjustment
Another possible issue is if the puller arm gets bent out of alignment with the blades. The puller arm is hand-bent at
the factory to ensure it will go between the blades. If for some reason the puller arm has been bent out of place, you
can make a slight adjustment to the blade by hand. The puller arm will move fairly easily by hand – push the puller
arm into the hole in the throat of the machine, and either push down to bend the free edge downward.
Pull up on leading edge if it is
too low to clear cutting blades
Push down on leading edge
if it is too high to clear
Push leading edge of puller
arm into opening on throat
Blade higher on right side – slightly tighten
screw on right side or loosen screw on left
Puller arm caught on edge of cutting
blades
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