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(26) Position of the bobbin thread trimmer/position of bobbin thread clamp plate
™ The distance from the top end of the bobbin thread trimmer to the center in the knife groove is 2 to 3 mm
in the state that the presser lifting lever has returned.
™ Distance from the bobbin thread clamp plate to the needle hole in the vertical and lateral directions is 0.3
to 1 mm.
(27) Timing to open the bobbin thread trimmer and the opening amount / adjusting the
bobbin winder trip latch
™ Opening amount of the trimmer is 2 to 4 mm at the top end of the trimmer.
™ Move the bobbin thread trimmer actuating cam to its right end.
™ Distance from the top end of the bobbin winder trip latch to the hook sleeve is 5 to 7 mm in the state that
the presser lifting lever has returned.
™ The protruding amount of the inner hook at the top end of the bobbin winder trip latch is 1 to 2 mm when
the bobbin case is not placed in the hook and the presser is raised.
Standard Adjustment
2 to 3 mm
0.3 to 1 mm
0.3 to 1 mm
2 to 4 mm
Bobbin thread trimmer
Actuating cam setscrews
Needle hole
Bobbin thread clamp plate
Knife groove
Bobbin thread clamp plate setscrews
Bobbin thread trimmer link
Bobbin thread trimmer link rod setscrew
Bobbin thread trimmer link rod
Bobbin thread trimmer actuating cam
Rotation
Bobbin winder trip
latch stopper
Bobbin winder trip
latch shaft
Rotation
Bobbin winder
trip latch lever
Bobbin winder trip latch
lever setscrews
Protruding amount : 1 to 2 mm
Left/Right
Bobbin winder trip latch
5 to 7 mm
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