Originally Posted by
Manalto
The machine had a standard needle installed when I bought it and it stitched fine. I replaced it with the correct 206x13 needle for this model and it continued to make perfect stitches. I have many 206, 306 and 319 machines (too many) and I've never been able to sort out the controversy with the needles.
It will whether the bobbin is modified or not. The danger happens on full bight zig-zag when the 15x1 will hit the bobbin case. There's a really clear explanation about the problem and solution
here.