ZOJE ZJW663A, Instruction Manual

Page: 13 / 68

The differential feed ratio is the ratio of movements between the main feed dog and diffe-
When the movement of main feed dog is bigger than the differential
feed dog, the fabric is stretched at sewing.
therwise the fabric will o shrink.
Loosen nut ‘1’ of Figure
move the lever ‘2’ up or down to
obtain the correct differential ratio.
To stretch
To shrink
1 8 (Adjusting the differential feed ratio) . .
† ‡ ˆ ‰ I Š † 5 ‹ ‡ ˆ Œ s † ‡ ˆ Œ   5 ‰ ‘ 。 ’ ‹ ‡ ˆ Œ 5 Š † = “ †
‡ ” Œ >,• – — ; ˜ g,™ š › ˆ œ < X 。
† ‰ I  ž G p q r ‘ ’ ' 1 2 1
- .,¡ T ^ ¢ ‘ ’ k £ † ( ) 2
T ^ 5 。 T ^ ¤ R q r ‘ ’ 。 1
1 9 (Adjusting the stitch rength) . .
Fine
Loosen adjusting nut‘1’ and turn ad-
justing screw‘2’ to adjust the stitch
length as indicated in Figure 26.
T ^ n 5 ¥ ¦,$ § G p q ¨ ‘ ’ ， 1
G † q © ‘ ’ ( ) T ^ 。 2
ª: n ¥ ¦ 5 T ^ « ¬ $ v T ^
† ‰  ( ) 。
NOTE: The stitch length
must be made only after the differe-
is adjusted.
adjustment
ntial feed ratio
‘ ’ and 21
Coarse
Figure 21
Figure 22
rential feed dog.
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