Originally Posted by Weedwoman
I think my 306k required the 206 x 13 needle and my repair guy retimed it to use the 15 x 1 schmetz needles, it's worth getting done just in the cost of needles. Just my 2 cents worth.
This is a myth you do not have to retime the machine all you have to do is either buy the bobbin case that will allow the use of the 15x1 needle or trim the one you have. No retiming is needed, I have done this to several machines already and no issues at all.
Billy