(10) Stitch Length in Forward and Reverse Feed
– 13 –
Requirements:
• Feed Level : 9 mm
• When the hand-wheel is turned by hand
and a cloth is sewn 10 stitches in both for-
ward and reverse feed stitching the differ-
ence in stitch length should be 2 mm or
less.
Standard Adjustment
Reverse feed
stitching
Forward feed
stitching
Turn it in direction B.
Forward feed stitch length < Reverse
feed stitch length
A
B
Direction A
The stitch length for the forward
feed stitching is increased.
The stitch length for the reverse
feed stitching is decreased.
Direction B
The stitch length for the forward
feed stitching is decreased.
The stitch length for the reverse
feed stitching is increased.
Forward feed
stitching
Reverse feed
stitching
(11) Thread Tensioner
Requirement:
•When the presser foot is lifted
and the distance between the
upper surface of the throat
plate and the bottom surface of
the inner presser foot is set
to 3.0 mm, the thread tension
disc comes in perfect contact
with the throat plate. When the
distance is set to 5.5 mm, the
thread tension disc perfectly
rises from the throat plate.
Standard Adjustment
3.0 mm: The thread tension disc
lies
in perfect contact with the throat plate.
5.5 mm: The thread tension disc per-
fectly rises from the throat plate.
Turn it in direction A.
Forward feed stitch length > Reverse
feed stitch length
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