typical GC6-6, Инструкция

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32
33
34
35
A
B
0.8mm~1.2mm
Left
Right
Screw driver
Rubber plug
Thread tension releasing cam
Thread tension releasing rod
Screw
Presser ber lifter
Tension
1 5
6.2 Adjusting the feed dog
6.2.1 Adjusting height of feed dog
Turn balance wheel to raise the feed dog to its
highest position, at that position, the height of feed
dog teeth should be projected 0.8-1mm above throat
plate top surface as shown in Fig.32. The height of
feed dog teeth of 1mm above the throat plate top
surface can be taken while sewing heavy material.
When adjusting, loosen feed lifting rock shaft
crank clamping screw A (Fig.33) slightly, then turn
feed lifting rock shaft crank B till the proper height
of the feed dog teeth is achieved, after adjustment,
tighten clamping screw A.
6.2.2 Adjusting the position of feed dog (Fig.34)
The standard position of feed dog A is that the
clearance from the throat plate slit end to the front
end of the fully advanced feed dog is 1.5 mm. as
shown in Fig.34a
1) Fix the feed dog in the position where the
feed fully advances.
2) Loosen two feed rock shaft crank clamping
screws B slightly, as shown in Fig.34b
3) Move feed bar to adjust the clearance between
the feed dog and throat plate.
4) After adjustment, tighten clamping screw B .
6.3 Adjusting the tension releasing mechanism(Fig.35)
The tension discs should be pushed apart to open
when the presser foot is lifted. But the open timing of
the tension discs can be adjusted as follows:.
1) Remove face plate and the rubber plug at rear
side of arm and lossen screw A of the knee lifting
lever (left).
2) Then the tension releasing cam can be moved
leftward or rightward, open later when the cam is
moved rightward, open earlier when the cam is
moved leftward.
3) After adjustment, tighten screw A and replace
rubber plug and face plate.
A
B
B
Feed rock
shaft crank
A
1.5mm