typical GC6-7D - Adjusting the Clearance between Presser Foot and Follow Presser Foot; Periodical Cleaning

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31.Adjusting the clearance between presser foot and follow presser foot (Fig.4
In sewing operation, for prevent the follow pre-
sser foot from striking on presser foot at the end of
feeding, a proper clearance C of approx. 1mm should
be maintained between them.
When the clearance is too small or too big nec-
essary to adjust, loosen the crank clampin screw
and turn down the needle bar shaft, then the follow
presser foot move near the presser bar, and note the
needle and the needle hole center ofeed dog, see
the figure if the needle is off the hole center, then
loosen feed crank set screw, move the feed dog to
the right position. After the adjustment, tighten the
set screw. For the right and left position, to loosen
screw (A) to obtain.
31.Periodical cleaning (Fig.41、42、43)
Clean the feed dog the rotating hook, the bobbin
case, the oil pump filter screen and the like perodically
according to customer s usage.
1.Cleaning the feed dog
Remove the throat plate, clean off all the dust
and lint on the slit of the feed dog , the installing the
throat plate.
2 Cleaning the rotating hook
Clean off all the dust around the rotating hook,
and clean the bobbin case with soft cloth.
3 Cleaning the oil pump filter screen (Fig.46)
Take off the oil filter, clean off the dust of filter
screen with gasoline.
41
A
42
A
43
A
40
C
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