7. Adjusting the position of knife
Remove the throat plate (needle plate).
[Position of the moving knife]
How to adjust
1. Turn OFF the power switch, and turn the handwheel in a condition that the operation lever is lowered to protrude
to moving knife.
Then slowly return the handwheel.
2. When the section B of the moving knife base has come to the looper position in the figure, stop the movement
of the moving knife.
Then check the position and dimension, 0 to 0.5 mm, of the looper and the moving knife base. If the position is
incorrect, perform following procedure.
3. Following the aforementioned procedure 1, protrude the moving knife, and slightly loosen two set screws in
the moving knife base to the extent that the moving knife base can be moved.
4. Turn the eccentric shaft and adjust the position and dimension. The securely tighten the set screws .
8. Stop position of thread trimmer
Remove the face cover, top cover and front panel.
How to adjust
1. Set the operation lever in thread trimming (lower the lever) condition.
2. Turn the motor pulley by hand, and stop at the position where the needle bar stops.
3. At this time, measure the distance from the upper surface of the throat plate (needle plate) to the tip of needle.
Make sure that the distance is 12.56 ± 0.3 mm.
4. Loosen two screws and adjust the position by sliding the thread trimming link installing plate A up or down.
In case needle is excessively low Lower the A
In case needle is excessively high Raise the A
- 2 5 -
- 2 5 -
- 2 5 -
- 2 5 -
- 2 5 -
12.56 ± 0.3 mm
Hand wheel
Throat plate (Needle plate)
Needle
A
j
k
j
This part must always be visible.
0 to 0.5 mm
Moving knife
Moving knife base
B
j
k
j
j
