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16
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hook should be 0.3-0.4mm.
(1) Loosen the two screws 2 and 5.
(2) Move the driving knife shaft 6 up or down to adjust the position of the driving knife 1.
(6) Tighten the screws 2 and 5 on the setting collars again.
30)
Adjusting the driving knife stop position
The distance from the blade of the fixed knife 2 to the end of the driving knife 1 should be 0.5 mm when
the driving knife 1 has moved as far as possible toward the fixed knife 2.
(1) Tilt back the machine head.
(2) Turn the machine pulley to move the roller 4 of the driving knife arm 3 to the outermost side (right side) of
the thread trimmer cam 5.
(3) Loosen the bolt 6.
(4) Move the driving knife 1 so that the distance between
the blade of the fixed knife 2 to the end of the driving knife 1
is 0.5 mm, and then tighten the bolt 6.
31)
Adjusting the driving knife operating position
The standard distance from the left side of driving knife
arm 1 to the screw tip on the plunger 2 of the thread trimming
solenoid is 1 mm. The clearance between the outermost side
(right side) of the thread trimmer cam 5 and the roller 6 of the driving knife arm should be 0.1 mm.
From the library of: Superior Sewing Machine & Supply LLC
