1 8
Nut
B
39
Presser foot lift
regulating sc ew
r
Presser foot lift shaft
2) Adujsting the alternate lift amount of the presser feet
Lift amount of the walking presser foot is within 5mm
and lift amount of the presser foot is 2.5 mm, when sewing
medium or heavy materials. The lift amount of these two
presser feet can be changed slightly according to the nature
of material or the requirements in sewing. The sum of the
lift amount of these two presser feet is nearly the same as
the other mechanisms are kept in constant condition .In
other words, the increasing of walking presser foot lift
amount diminishes the lift amount of presser foot, and vice
versa.
When adjusting, loosen the presser foot lift front crank
clamping screw slightly with a screw driver as shown in
Fig.37b, and turn the crank to overcome the friction on its
shaft. The lift amount of walking presser foot can
be
increased and the lift amount of presser foot is decreased if
turn the crank clockwise. The lift amount of walking presser
foot is decreased and the lift amount of presser foot is
increased when turn the crank counter-clockwise. After
adjustment, tighten the clamping screw.
3) Adjusting the lift amount of presser foot together with
walking presser foot
The lift amount of presser foot together with walking
presser foot can be adjusted slightly. When adjusting, loosen
nut with a spanner foot lift regulating screw to change its
center distance between the presser foot lift shaft as shown
in Fig.39. The lift amount is increased as to shorten the
center distance B, and the lift amount is decreased when to
widen the center distance B. After adjustment, tighten the
nut again.
4) Adjusting the clearance between presser foot and
walking presser foot
In sewing operation, for prevent the walking presser foot
from striking on presser foot at the end of feeding, a proper
clearance C of approx. 1.5mm should be maintained between
them, as shown in Fig.40c. When the clearance is too small
or too big necessary to adjust, loosen rear crank clamping
screw with a screw driver and then turn the rock shaft as
shown in Fig.40a. Turn the rock shaft clockwise to increase
the clearance C, and turn the rock shaft counter-clockwise to
decrease the clearance C. After adjustment, tighten the
clamping screw.
After adjusting the clearance between presser foot, it is
probable the needle to deviate from the center of the feed
dog needle hole in feed direction, this can be adjusted to
loosen the feed rock shaft crank clamping screw B (Fig.
34b) and shifting the feed dog B (Fig.40d) in direction of
feed after adjustment, tighten clamping screw B again, In
case the needle is deviated from the feed dog needle hole
center in the crosswise direction, loosen twoo feed dog screw
A (Fig.40d) and to shift the feed dog B crosswise. After
adjustment, tighten the feed dog screw.
After the adjustment of 1)-4) as mentioned above, an
inspection should be made, as to raise the presser foot with
presser bar lifter and turn the balance wheel slowly to see
that the walking presser foot is to strike the other parts. If it
may be, should be adjusted again.
40
rear crank
Clamping screw
needle bar vibrating shaft
A
B
C
C
C
B
A
Содержание GC6-6
Страница 24: ...Parts Manual...
Страница 35: ...3 1 3 1 1 12 11 910 7 10 8 2 3 3 5 4 6 13 14 6 Rotating Hook And Its Shaft...
Страница 37: ...14 12 13 10 7 6 6 1 3 20 22 23 21 19 2 16 18 4 10 11 9 8 15 18 17 26 25 24 3 3 7 Stitch Length Regulating...
Страница 41: ...3 7 9 6 Presser Bar Model GC6 12 15 14 10 9 5 4 21 22 3 24 17 2 1 16 20 19 8 27 6 7 25 18 23 11 13 26 8...
Страница 43: ...8 13 16 15 10 11 6 5 3 20 4 2 1 9 25 24 7 8 23 12 14 18 19 17 21 22 3 9 10 Presser Bar Model GC6 7...
Страница 49: ...4 5 4 5 1 2 3 4 5 11 8 6 7 12 13 9 10 13 Lubrication...
Страница 51: ...4 7 4 7 1 2 3 4 5 6 6 7 8 9 10 11 12 12 13 14 6 6 7 12 15 16 17 14 Drip Pan And Knee Lifter 12...
Страница 53: ...4 9 15 Accessories 1 7 3 2 11 10 9 5 6 8 15 16 17 4 14 12 13 18 6 12 13...