Singer 250 Series Service Manual page 3

Specification of the 252 - 257 and 259 Class Machines
252
257
Automatic Zig-Zag Machine
Manual Zig-Zag Machine
General Features
Flat bed machines with electric or treadle drive.
Lock slilch machines.
Maximum stitch length : 4 mm. (6 s.p.i .).
Maximum stitch widlh: Approx . 5 mm . (3/16 inch): (252-257) .
Presser bar lifl up lo engagement : Approx. 7.5 mm. (295 " ).
Speed : Minimum 900 Stitches per minute.
Needle. Catalog 2020 (15 x 1). Needle threading from front to back.
Vertical axis rolaling hook which makes two revolutions per stitch.
Easy front • drop-in • bobbin .
Comparison of the Particular Features
Hidden bobbin winder
Front • drop-in • bobbin
Rotating hook
FORM 723 (1172)
259
Slraighl Slilch Machine
252
X
X
X
257
X
X
X
259
X
X
X
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