typical GC0303 - Page 17

1、Standard position
Turn balance wheel to lower Feed dog (A) till it is
horizontal with the surface (B) of thrat plate, at the
moment, the tip of needle ( ) shonld be horizontal with
the surfaces of throat plate and feed dog.
Adjustment cam be done by adjusting the position
of feed cam and feed dog lift cam.
.
.
2、Installing feed dog lift cam (See Fig 33)
3、Installing feed cam (See Fig 34)
26. Feed timing adjusting (Fig 32、33、34）
34
32
-13-
33
A
B
C
C
B
Open the back side cover, turn balance wheel by
left hand counter-clockwise, take Screw A as for the
standard, the center of Screw B is slighthy a little lower
than the center of Screw A. .
Continously turn balance wheel, take Screw (B) as
for standard, the center of Screw ( ) is slightly a little
higher than the center of Screw (B). .
C
C