Service manual

1-14
S-104-100
Revised 09/2004
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Phones: [phone] (Service), [phone] (Spare Parts); Fax: [phone]
PRINCIPLES OF SEWING
A loop is formed as the needle rises. The looper carrier continues moving to the left and the right-hand
looper enters the new loop formed. The previous loop is pulled up tight against the material.
Needle guard
Upper thread
Needle
Throat
Lower thread
L.H. Spreader & looper
R.H. Spreader & looper
R.H. Spreader & looper
Cord
Needle guard
Upper thread
Needle
Lower thread
Throat Plate
As the needle moves down to form a new loop, an implement called a take-up, pulls the upper thread up
and into the material, bringing along the lower thread.