typical GC6-7D - Feed Dog Horizontal Adjustment; Stitch Length Error Adjustment

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24.Feed dog horizontal Adjustment (Fig.30)
To adjust the position of feed dog, move feed
dog to the front end of throat plate. Loosen Screw
A (See Fig.29b), move feed dog support B in the di-
rection shown by arrow to adjust After adjustment
tighten Screw A.
Feed dog is 0.8~1.2mm above the surface of
throat plate horizontally.
When sewing condition requires tilting, adjust
like this:
loosen Screw A
Press against the slot of eccentric shaft with a
screwdriver to turn eccentric shaft left and right.
Tighten Screw A.
The front of feed dog is higher, which can pre-
vent perckering and no skipping.
The front of it is lower, which can prevent
material sliding and no breakage of bobbin thread.
25.Stitch length error adjustment (Fig.31)
Loosen Screw (A) and (B), take out the link pin,
and loosen Screw (C) to adjust Cam (D) with a screw-
driver through the crank hole.
Turn right: forward stitch length shorten reverse
stitch length enlarged;
Turn left: forward stitch length enlarged reverse
stitch length shorten.
29
a
B
A
b
C
30
Eccentric shaft mark position
Mark
Feed dog
Horizontal
Above
Under
Standard
The front up to the max
Thefrontdowntothemax
31
B
A
C
D