typical TW1-2B - Feed Timing Adjustment

-10-
24
25
26
(1) Standard position
(2) Installing the feed dog lift cam
(3) Installing the feed cam
Turn the balance wheel to lower feed dog (A)
until it is horizontal with the surface (B) of needle
plate. At this moment, the tip of needle (C) should be
horizontal with the surface of needle plate and feed
dog.
Adjustment can be done by adjusting the position
of feed cam and feed dog lift cam.
.
.
Turn the balance wheel to lower feed dog (A)
until it is horizontal with the surface (B) of needle
plate. At this moment, the tip of needle (C) should be
horizontal with the surface of needle plate and feed
dog. .
Adjustment can be done by adjusting the position
of feed cam and feed dog lift cam. .
Open the backside cover; turn the balance wheel
by left hand counter clockwise to lift the needle bar
to its highest position. Now the first screw of lift cam
(direction of counter clockwise ) has a tilt angle with
counter-cl ckwise is 45 degree. Then tighten the
screw.
o
.
Open the backside cover; turn the balance wheel
by left hand counter clockwise to lift the needle bar
to its highest position. Now the first screw of lift cam
(direction of counter clockwise ) has a tilt angle with
counter-cl ckwise is 45 degree. Then tighten the
screw. .
o
After finish installing the feed dog lift cam, then
install the feed cam. Take the feed dog lift cam as a
reference, when the needle bar at its highest position,
the screw (A) has a tilt angle with counter-clockwise
is 30 degree. Last tighten the screw (B) .
After finish installing the feed dog lift cam, then
install the feed cam. Take the feed dog lift cam as a
reference, when the needle bar at its highest position,
the screw (A) has a tilt angle with counter-clockwise
is 30 degree. Last tighten the screw (B) .
25. Feed timing adjustment (Fig. 24,25,26)
A
B
Screw
A
B
C