N
Adjustment of upper feed
length (needle side)
If uneven feeding occurs according to the fabric,
adjust the long hole of the feed rock shaft crank
(right) to adjust the upper feed length.
(How to adjust)
( 1 ) Loosen the special bolt.
( 2 ) Move the special bolt upward to decrease the upper feed.
( 3 ) Move the special bolt downward to increase the upper
feed. (The upper feed and the lower feed theoretically
become equal when the center of the special bolt
matches the reference line of the feed rock shaft crank)
( 4 ) After adjusting, tighten the special bolt.
Note: If the special bolt is overtightened, the link and
the feed rock shaft crank (right) may not work.
O
Adjustment of forward/
backward feed length
The forward/backward feed length can be adjusted
by moving the eccentric pin as shown in the figure.
( 1 ) Loosen the reverse stitch shaft crank screw.
( 2 ) To increase forward stitch length, turn the
eccentric pin clockwise.
To increase backward stitch length, turn the
eccentric pin counterclockwise.
Note: Please adjust in the range where the mark
point of the eccentric pin is facing to the
reverse block side as shown in the figure.
HOW TO USE
Link
Special bolt
Upper feed
increases
Upper feed
decreases
Reference
line
Feed rock shaft
crank(right)
Backward stitch
length increases
Reverse stitch
shaft crank
Reverse
block
Eccentric pin
Mark point
Screw
Forward stitch
length increases
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