typical GC2605, Operating Instructions & Parts Manual

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6.8 Adjusting the clearness between the presser foot
and the walking presser foot (Fig.37)
In sewing, to prevent the walking presser foot
from striking on the presser foot at the end of feeding,
a proper clearness C of approx.15mm should be kept
between them, as shown in Fig.37b. When the clearness
is too small or too big and it is neccssary to be adjusted,
loosen the rear crank clamping screw with a screw
driver and turn the rock shaft, as shown in Fig.37a.Turn
the rock shaft clockwise to decrease clearness C, and
turn the rock shaft counter-clockwise to increase
clearness C. After adjustment, tighten the clamping
screw.
During adjusting presser foot, if needle is off the
symmetric center of feed dog hole, then loosen the
screw D for feed dog (see Fig.37c) and adjust the po-
sition of feed dog. After finishing, tighten screw D.
After the adjustment, an inspection should be
made, as to raise the presser feet with presser bar lifter,
and turn balance wheel slowly to see if the walking
presser foot is to strike with other parts. if it is, should
be adjusted again. .
Clean the feed dog, the rotating hook, the bobbin
,
case and the like periodically according to customer s
usage.
Remove the throat plate, the slide ring and the
bobbin case and clean off all the dust and lint on the slit
of the feed dog and on the rotating hook and wipe them
with brush.
.
.
.
.
.
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7. P er i odi cal c l eani ng
r ear c r ank
Cl ampi ng s cr ew
Needl e b ar v i br at i ng
shaf t
C
C
37
Feed dog
D
a
b
c
d