SINGER 221K Featherweight - Manual (Page 12)

10
TO THREAD BOBBIN CASE
1. Hold bobbin case
and b o b b i n s o
that thread leads
off in direction
shown above.
2. Place bobbin into
bobbin case. Pull
thread into slot 1.
3. Pull thread under
tension spring 2
and into slot
3 at
end of spring, as
shown.