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Adjustment
of stitch length
(!) Stitch iength dial
_) Setting mark
To select stitch length, turn the dial
The larger the number, the longer the stitch
The stitch length can be adjusted from 1 to 4 mm
(approx. 1/32 " to 5/32 "')
Position "R" is for rolled and narrow hemming_
Adjustment
of differential
feed
ratio
(_ Differential feed dial
(_) Setting mark
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 feed motion.
[_
indicates the neutral position - no differential feed
How to adjust
= If the sewn fabric is stretched,
turn the dial counter-
ctockwise (from 1_0 to 2.0) to avoid.
(_ Stretched
• If the sewn fabric is puckered, turn the dial clockwise
(from 1.O to Q7) to avoid.
(_) Puckered
NOTE:
Maximum differential feed ratio sets automatically
to a
maximum between 1.7 and 2.0 when the stitch length is
set between 33 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.
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