19.
ADJUSTING THE LIFTING AMOUNT OF THE PRESSER FOOT AND THE WALKING FOOT
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-
ing work after turning the power off and ascertaining that the motor is at rest.
➊
➌
A
C
B
➋
– 36 –
The amount of alternate vertical movement of the presser foot and the walking foot is normally equal. To increase the
amount of alternate vertical movement, move upper feed arm
➊
upward in the range of the slot.
To decrease it, move the upper feed arm downward. Then, tighten the nut
➌
.
To change the lifting amount of the presser foot and that of the walking foot, loosen screw
➋
in the upper feed arm, turn
the handwheel to this side and tighten screw
➋
when the bottom faces of the presser foot and the walking foot are flush
at the top surface of the throat plate.
Then, the lifting amount of the presser foot becomes more than that of the walking foot. Or, turn the handwheel in the
reverse direction to increase the lifting amount of the walking foot more than that of the presser foot.
You will find upper feed arm
➊
when removing the right side of the window plate.
Standard of the amount of alternate vertical movement
Engraved marker line
A
Engraved marker line
B
Engraved marker line
C
Approx. 5 mm
Approx. 4 mm
Approx. 3 mm
– 37 –
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