6
REGULATING THE THREAD TENSIONS
For ordinary stitching, the tension of the upper and lower threads should be equal so as
to lock both threads in the center of the fabric. If the tension on either thread is stronger
than on the other, imperfect stitching will be the result.
If the tension on the upper thread is greater than that on the lower thread, it will be
straight along the upper surface of the fabric.
If the tension on the lower thread is greater than that on the upper thread, the lower
thread will lie straight along the underside of the fabric.
E Perfect stitching
WAF 4 1
T igh t ten s io n of n ee dl e thr e ad
Loos e te n si o n of need l e t h read
A. TENSION OF THE UPPER THREAD
To adjust the tension of the upper (Needle) thread, turn the serrated nut (1) to the right
for increasing tension. If you desire to decrease it, turn the nut to the left.
B. THE TENSION OF THE BOBBIN THREAD
It is regulated by means of the tension screw (1).
To increase the tension, turn the screw to the right, and to decrease it, turn the screw to
the left by a screw driver.
ADJUSTING OF THE PRESSER FEET PRESSURE
The pressure of the presser feet is regulated by the adjusting screw (1). To increase the
pressure, turn the screw to the right and to decrease it to the left by a screw drive
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