35
Adjustment of presser bar lifter switch position
To check:
1. Attach the zigzag foot A.
2. Lower the presser foot lifter.
3. Turn the power switch on while pressing the auto-
lock key and needle up/doun key to enter the factory
setting mode.
4. Press the numeral key “4” to select the sensor
adjusting mode.
5. Check if the indication of “Foot L” and “Assist L” are as
shown below when the position of the foot lifter is (1),
(2) or (3).
Position of foot lifter: (1)
Foot L: “L”
Assist L: “L”
Position of foot lifter: (2)
Foot L: “H”
Assist L: “L”
Position of foot lifter: (3)
Foot L: “H”
A
ssist L: “H”
If not, adjust as follows.
Setscrew
4.5 to 5.5 mm
Presser foot
lifter
Presser foot lifter
switch
Switch setting plate
Auto-lock key
Needle up/down key
(Numeral key)
To adjust:
1. Remove the face plate.
2. Place a 5 mm block between the presser foot and the
needle plate, and lower the presser foot.
3. Loosen the setscrew on the switch setting plate.
4. Raise the presser foot slowly until it stops and hold it
as it is.
5. Lower the switch setting plate slowly until the
indication of “Foot L” changes from “L” to “H” and
tighten the setscrew on the switch setting plate.
6. Remove the 5 mm block. Lower the presser foot lifter
and raise it slowly. Check the distance between the
presser foot and the surface of the needle plate is 4.5
to 5.5 mm when the indication of “Foot L” changes
from “L” to “H”.
7. Follow the step 5 of “To check” procedure above.
(Sensor adjusting mode)
(Factory setting mode)
(1)
(2)
(3)
Surface of the
needle plate
