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Adjustment Procedure
Results of Improper Adjustment
Checking items:
❶
Cloth plate safety switch
❷
Presser foot lifter safety switch
* Cloth plate safety switch
❶
has to return smoothly when it is pressed.
* Presser foot lifter safety switch
❷
is to have a clearance when the
presser foot is lifted. It should be remembered, however, that the
presser foot lifter safety switch must not be excessively pressed
when the presser foot is lowered. (If excessively pressed, a deforma-
tion of the cover, etc. can be caused.)
How to perform adjustment:
Adjusting the cloth plate switch
○
Loosen the setscrews (A).
○
Install the switch at the center of the slot with lightly pressed.
○
Tighten screw (A). Check to be sure that switch can be smoothly
turned ON/OFF.
Adjusting the presser foot lifter switch
○
Loosen the setscrews (B).
○
Adjust the presser foot lifter switch
❷
so that a clearance of approxi-
mately 1 mm is provided between the switch and the shaft (C) when
the presser foot is lifted.
○
After the adjustment, tighten screws (B). Lower the presser foot to
check that the shaft (C) does not excessively press the switch
❷
.
○
Unexpected operation can oc-
cur due to a malfunction of the
respective switches.
○
If the presser foot lifter safety
switch is excessively pressed, it
can break or malfunction.
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