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Adjustment Bobbin winder
[Adjustment standard]
• No uneven bobbin winding.
• The target for the bobbin winding quantity must be filling 80 to 90% of the diameter.
[Adjustment procedure]
1. Loosen the screw (screw pan (S/P washer) M3 x 8) of the thread guide assy..
2. Move the thread guide assy. up and down, to adjust uneven bobbin winding.
3. Tighten the screw (screw pan (S/P washer) M3 x 8) of the thread guide assy..
*Key point
• When the uneven bobbin winding is upper side, move the thread guide assy. down.
• When the uneven bobbin winding is lower side, move the thread guide assy. up.
4. Loosen the screw (screw pan (S/P washer) M3 x 20) of the bobbin presser.
5. Turn the bobbin presser left and right, to adjust the winding quantity.
6. Tighten the screw (screw pan (S/P washer) M3 x 20) of the bobbin presser.
*Key point
• The target for the bobbin winding quantity is filling 80 to 90% of the diameter.
NOTE
• The large side of the bobbin presser must be at the front cover side.
Screw pan (S/P washer) M3 x 8
Thread guide assy.
Move the thread
guide assy. down.
Move the thread
guide assy. up.
Bobbin presser
Screw pan (S/P washer) M3 x 20
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