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Adjustment (Modules)
Inspection and
Adjustment
Front/back, left/right position of feed dog adjustment
1. Remove screws M4 (two), and remove needle plate A (1).
2. Align the feed adjuster assy. gear and F pulse motor gear match marks (feed in 0 mm position).
3. Loosen the screw (bind 3 x 8), temporarily install needle plate A, and adjust the forward/reverse and left/right
positions of the feed dog.
*Key point
• Adjust the gap between the forward edge of the feed dog middle tooth and feed plate A front to back to 3.2 –
3.8 mm.
• Adjust the left and right gaps between the feed dog and needle plate A to be approximately the same.
• Make sure that the feed dog and needle plate A are not at an angle to each other.
4. Tighten screw (bind 3X8) [torque: 0.78 – 1.18 n-m]
5. Tighten screw M4 [torque: 1.18 – 1.57 n-m]
Match mark
Parallel
3.2 - 3.8mm
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