24.Adjusting the timing of feed(Fig.20)
25.Regular cleaning(Fig.21)
8
20
21
1. Standard position
Turn the hand wheel to lower the feed dog (A)
when the feed dog and the surface of needle plate(B)
is at the same level, the tip of needle (C) and needle
plate and feed dog should be at same level.
2. Installing the feed lifting cam
Open the upper cover, turn the hand wheel
counter-clockwise by hand to lift the needle bar to
the top position, the first screw on the cam should be
tilted 45 counter-clockwise.
3. Installing the feed cam
After install the feed lifting cam, next install the
feed cam. Lift the needle bar to the top position,
look the feed lifting cam as the frame of reference,
the screw (A) should be tilted 30
cunter-clockwise, in other word, the tilted angle is
15 clockwise against the first screw of feed lifting
cam. Then tighten the screw (B).
0
0
0
.
.
.
.
.
.
A
B
C
Screw
A
B
Please clean the feed dog, hook and bobbin case
regularly.
1. Cleaning the feed dog.
Uninstall the needle plate, clean the dust on the feed
dog, after clean, install the needle plate.
2. Cleaning the hook
Clean the hook with a soft brush as shown in the Fig.
21. Meanwhile clean the bobbin case with a soft
cloth.
A
B