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【 1】 HOW TO USE THE THREAD TRIMMER
< Note >
Do not use this thread trimmer with no fabric under the presser foot.
■Pressing the pedal with toe (position A) starts the
machine.
Releasing the pedal (position B) stops the
needle at the top/bottom of its stroke (adjustable with the
motor).
■If the needle stops at the bottom of its stroke as adjusted,
pressing the pedal with heel (position C) raises the
needle.
As soon as the needle stops at the top of its
stroke by pressing the pedal with heel, the thread
trimmer gets actuated (if the needle stops at the top of its
stroke as adjusted, the thread trimmer gets actuated by
pressing the pedal with heel).
■Returning the pedal to position B lowers the presser foot.
■The presser foot can be raised or lowered freely by
releasing the pedal (position B) or pressing the pedal with heel (position C) until the pedal
is placed at position A for the next sewing operation after the threads are cut.
【 2】 INSTALLING THE POSITION DETECTOR
■Install position detector A and tighten screw B
temporarily.
■Fit positioner bar C onto the guide groove of the position
detector. Then tighten screw D.
■Turn on the motor.
< Note >
Remove the connector for the thread trimmer cylinder.
Make sure the knife is retracted all the way.
■Press the pedal with heel after two to three stitches are
formed by pressing the pedal with toe.
Then the needle stops.
■Loosen screws B for the position detector.
Turn the machine pulley while checking that the
position of screws B is not shifted. Align mark P on
handwheel E with the alignment mark on the arm.
Then the needle bar is at the top of its stroke.
Tighten screws B to secure the position detector.
■Check to see if the needle bar stops at the top of its stroke
by pressing and then releasing the pedal.
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【 3】 ADJUSTING THE THREAD TRIMMER AIR CYLINDER（ UTA）
3-1 Air cylinder stroke
The stroke of the air cylinder should be
approximately 15mm.
To adjust this stroke, loosen collar B and
screw A.
Set the clearance between
rubber cushion F and the rear end of the
cylinder at 15mm.
To position shaft E, loosen nut C.
With the cylinder retracted, set the
distance from the left end of cylinder
installation bracket D and the center of
shaft E at approximately 55.3mm.
3-2 Air cylinder return spring
With the cylinder plunger protruded, there should be
clearance slightly between collar G and bracket D.
【 4】 ADJUSTING THE THREAD TRIMMER SOLENOID（ UTE）
4-1 Solenoid stroke
The stroke of the solenoid should be
approximately 15mm.
To adjust this stroke, remove rubber
cover F and loosen nut A.
Set the clearance between rubber cushion
B and the rear end of the solenoid at
15mm. To position shaft E, loosen nut
C. With the solenoid retracted, set the
distance from the left end of bracket D
and
the
center
of
shaft
approximately 55.3mm.
4-2 Adjusting the solenoid return spring
With the solenoid plunger protruded, there should be
approximately 42mm clearance between collar H and
bracket D. To make this adjustment, loosen screw G
of solenoid return spring collar H.
E
at
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