typical GC2605, Инструкция по эксплуатации и каталог запасных частей

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4. O per at i on
4.1 Selection of the thread
Needle thread should be left-twisted thread, For
bobbin thread. either left or right twisted thread is
available.
To identify the twist direction of the thread, hold the
thread as shown in Fig.12,twist the thread by right hand
in the direction as arrow shows. If the stand turns to be
tight, the thread is the left-twisted thread, other wise
it is right-twisted thread.
Oil applied to hole A is distribulated to the parts
F. G. H. I and J through wicks, as shown in Fig.9.
Oil applied to the hole B is through oil distributor to
the parts C, D and E, as shown in Fig.10.
The upper bevel gear cases in Fig.11, are packed
with fine grease, which should be replenished period-
ically as may be consumed gradually after a long time
of operation.When replenishment, turn off screw plugs K
first and the screw hole should be packed with fresh
grease, thru screw on the screw plugs. If the grease
in the bevel gear case is too dirty. it must be changed
thoroughly.
3.2.4 Trial run
Trial run is required for a new sewing machine
when the machine left out of operation for a quite long
time is used again, Before trial run, be sure that the bal-
ance wheel must be rotating in counterclockwise
direction ( view from the outsideof the balance wheel )
to lift the presser foot lifter, At the beginning, run the
machine at a low speed, then increase the speed
gradually and up to 2000 spm when the machine runs
well . After a few minutes, stop the machine for
,
examination, The machine can t be put into operation
without sufficient trial run .
8
9
10
11
A
I
G
F
H
J
D
E
B
C
K