HIGHLEAD GC24698-25L, Инструкция по эксплуатации

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3) Feed dog height should be measured at the point where the needle
is at the top position.
For light fabric: Approx 0.8mm
For usual fabric: Approx 1.0mm
For heavy fabric: Approx 1.2mm
Adjustment procedure:
1) Lay down the machine bed toward the other side;
2) Turn the balance wheel by hand stop when the feed dog is raise to its highest position from the surface of
needle place;
3) Loosen the Screw and adjust the height of the feed dog;
4) After adjusted, tighten the screw.
The feed dog height is factory-adjusted to 1.2mm
11. Walking foot and presser foot vertical
stroke adjustment (Fig.16):
When fabric with large elasticity is sewn, or when thickness
of fabric changes, the vertical stroke (movable range) of the
presser feet should be adjusted as follows:
1) Loosen the special bolt;
2) The vertical strokes of presser feet become minimum
when the crank rod is moved downward and set;
3) The vertical strokes of presser feet become minimum
when the crank rod is moved upward and set;
4) After the adjustment, tighten the special nut.
The vertical strokes of presser feet can be adjusted within a range from 2mm to 6mm.
12. Safety clutch device (Fig.17, Fig.18)
Safety clutch device is installed to prevent the hook and cog belt
from damage in case the thread is caught into the hook when the
machine is loaded abnormally operation.
1) Function of safety clutch:
A. When the safety clutch acts, the cog belt pulley will be unloaded.
Then the rotation of hook shaft will stop. The arm shaft only will
rotate. Stop the operation of machine.
B. Clean the thread thoroughly which is caught into the hook.
C. Turn the cog belt hub by hand, and check whether the hook
shaft rotates lightly and properly, place the clutch device as follows.
2) How to set the safety clutch (Fig.18)
A. While pressing down the push button on the opposite side of
bed by left hand, turn the balance wheel slowly by right hand away
from you;
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B. The balance wheel will stop by the gear plate, but turn the
balance wheel more firmly;