SINGER 1507 - Manual (Page 23)

Raise the presser bar (a). Attach the presser foot shank (b) as
illustrated. (1)
Lower the presser foot shank (b) until the cut-out (c) is directly
above the pin (d). (2)
Raise the lever (e).
Lower the presser foot shank (b) and the presser foot (f) will
engage automatically.
Raise the presser foot. (3)
Raise the lever (e) and the foot disengages.
Attach the seam guide (g) in the slot as illustrated.
Adjust according to need for hems, pleats, etc. (4)
Turn power switch to off ("O") when carrying out any of the
above operations!
Attaching the presser foot
Removing the presser foot
Attaching the seam guide
Attention:
1 2
3 4
16
Attaching the presser foot shank GB
a
c
d
e
f
b
b
a
e
g