28. ADJUSTMENT OF REVERSE SEWING SWITCH (B341 ⋅ B349 ⋅ B351 ⋅ B352)
STANDARD
The clearance between the BT switch and the reverse sewing lever B should be 1.0 ~ 1.5 mm.
ADJUSTMENT
1. Loosen the screw for BT switch holder slightly.
2. Use a standard screwdriver to move the top of the BT switch and adjust the clearance between the BT
switch and the reverse sewing lever B.
3. Tighten the screw.
Note
Check that the BT switch turns on when the reverse sewing button is pressed and the stitch length dial is set
to "0".
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