SINGER 3337 SIMPLE 取り扱いマニュアル

1.  NEEDLE THREADER LEVER is used to engage the automatic needle threader mechanism.
2.  NEEDLE THREADER GUIDE holds thread securely before placing it in hook pin.
3.  THREAD GUIDE controls movement of upper thread.
4.  NEEDLE holds thread during stitch formation.
5.  PRESSER FOOT SCREW secures the presser foot holder (shank) onto the presser bar.
6.  PRESSER FOOT holds fabric against the feed teeth while sewing. Various optional presser feet 

are available, depending on fabric sewn and sewing techniques. (see page 10)

7.  FEED TEETH (OR FEED DOGS), which look like rows of teeth under the presser foot, control the 

movement of the fabric under the presser foot.

8.  NEEDLE CLAMP holds the machine’s needle in position.
9.  NEEDLE CLAMP screw secures the needle when placed in needle clamp.
10.  ONE STEP BUTTONHOLE LEVER automatically determines the length of the buttonhole when 

lowered. (see page 23) 

11.  PRESSER BAR accommodates the presser foot holder.
12.  PRESSER FOOT HOLDER (OR SHANK) holds presser foot.
13.  NEEDLE PLATE covers the bobbin area and provides flat area around presser foot for sewing.
14.  STITCHING GUIDELINES are used as a visual reference for guiding fabric straight while sewing. 

The first line is 3/8” (10mm) from center needle position. The most popular seam allowance 

measurements are 1/2” (13mm) and 5/8” (16mm). The 1/2” seam allowance is the 2nd line, and 

the 5/8” seam allowance is the 3rd line from center needle position.