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Adjustment of Stitch Length
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Setting marK_
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Stitch length
dial
/
_ J
To select stitch length, turn the dial.
The larger the number, the longer the stitch.
The stitch ength can be adjusteo from 1 to 4 mm
(approx. 1/32" to 5/32'q.
Position "R" is for rolled and narrow hemming.
Setting
Differential feed dial
The differential feed ratio can be altered by turning the dial.
The number on the dial indicates the differential feed ratio between the main and the sub
Differentia!
feed
gathers
feed motion.
[] indicates the neutral position-no differential feed.
How to Adjust
e If the sewn fabric is stretched, turn the dial
counter-clockwise (from 1.0 to 2.0) to avoid.
26
® If the sewn fabric is puckered, turn the dial clock-
wise (from 1.0 to 0.7) to avoid.
NOTE:
Maximum differential feed ratio sets automatically to a maximum between 1.7 and 2.0 when the stitch length is set between
3.3 and 4.0.
Maximum stitch length and differential feed ratio cannot be set at the same time. If limits are exceeded for one control dial,
the other dial will automatically set to its maximum.
The puckering may be eliminated by reducing thread tensions as well as adjusting the differential feed ratio.
_ _. Differental
fe_d
stretches
c ored
Desired
Desired