typical GC20606-1-D2, Инструкция по эксплуатации

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32
33
34
9
0～0 . 5 m m
11
5.3.5 Presser foot lift volume adjustment (Fig.32)
When stitch on the very elastic material or the thickness
of the sewing material is changed. The adjustment
should be done in the following order:
Loosen the special bolt;
When the centerline distance between the special bolt
and the presser foot lift rear crank is decreased, the
presser foot lift volume will be increased. On the
contrary, the distance is increased, the lift volume will
be decreased.
After adjustment, tighten the special bolt. The common
presser foot lift volume can be adjusted in the range of
2-6mm.
5.3.6 Hook oil amount adjustment (Fig.33)
It adopts plunger full auto-lubrication system. Even
when run at a low speed, it can supply and suck oil very
well. Generally, only the hook oil amount can be
adjusted. It can be obtained by the oil amount adjusting
screw. Loosen the nut of the adjusting screw, turn the
screw clockwise to increase the oil amount. On the
contrary, to reduce the oil amount. After adjustment,
tighten the nut.
5.4 The movable knife
5.4.1 Set the movable knife's original position (Fig.34)
a. Turn the balance wheel to lower the needle bar to its
lowest position.
b. Move the trimming driven crank to make the trimming
roller get into the trimming cam groove.
c. Turn the balance wheel until the white mark on the
balance wheel is aligned with the mark line. Then
primarily set it as the position of the trimming driven
crank. Tighten the concerning screws temporarily to
prevent the trimming roller sliding out from the
trimming cam groove.
d. Loosen the screw A, B.
e. Adjust the movable knife to obtain the clearance of
0-0.5mm between the terminal line of the movable life
and the front end of the fixed knife. Then tighten the
screw A, B.
Crank
Increase Increase
Decrease
Crank link
Special bolt
Adjusting screw Adjusting screw
Movable knife
Fixed knife
Screw A
Screw B
Crank
Decrease Decrease
Increase
Crank