background image

5

HOW TO USE THE PEDAL   

 

 

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).  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 without pressing the pedal with heel). 
After the needle and looper threads are cut with the 
needle stopped at the top of its stroke, the looper 
thread is held by the clamp spring and the needle 
thread is moved up to the presser foot by the air wiper. 
Keep on pressing the pedal with heel to raise the presser foot. 
Then remove the fabric.  If you want to raise the presser foot while the machine stops, 
press the pedal with heel (position C). 

 
 
 

6

ADJUSTING THE THREAD TRIMMER   

 

6-1 Position of the movable knife 

Adjust movable knife A so that the bottom of movable 
knife base D is flush with that of movable knife A. 
Adjustment is made by loosening two screws C. 
The point of the movable knife should be 0.6mm to the 
left of the center of the needle hole. 
With the movable knife retracted, front E of the needle 
plate support bracket should be almost aligned with 
front F of the movable knife base. 

 
 
 
 
 

6-2 Position of the stationary knife 

With the movable knife fully retracted, there should be 
a overlap of 0.3mm between stationary knife G and the 
movable knife.  Adjustment is made by loosening 
screw H. 

 

< Note > 

If the gauge width is large, the overlap of the stationary 

knife and the right m vable knife should be equal to that 

of the stationary knife and the left movable knife. 

o

To achieve this adjustment, check to see if the stationary 

knife is placed in a horizontal position. 

 
 
 
 
 
 

 

4

Summary of Contents for FX/UTC Series

Page 1: ...INSTRUCTION FX UTC MANUAL Industrial Sewing Machines First published May 1997 Fourth edition January 2006 No 050153...

Page 2: ...Read and study this instruction manual carefully before beginning any of the procedures and save it for later use This instruction manual describes adjustments and maintenance procedures for the threa...

Page 3: ...THE PEDAL 4 6 ADJUSTING THE THREAD TRIMMER 6 1 Position of the movable knife 4 6 2 Position of the stationary knife 4 6 3 Adjusting the back spring 5 6 4 Adjusting the stopper 5 6 5 Disassembling and...

Page 4: ...ETECTOR Install the position detector by referring to the illustration on the right 2 CONNECTING RELAY CORDS AND AIR LINES 2 1 FX4404 Connect relay cords and air lines correctly by referring to the il...

Page 5: ...2 2 FX4406 4412 2...

Page 6: ...e speed when the thread trimming knife holder retracts If screw A is too loosened the knife holder will protrude too fast and then the position of the knife holder will become unstable causing cutting...

Page 7: ...ise the presser foot while the machine stops press the pedal with heel position C 6 ADJUSTING THE THREAD TRIMMER 6 1 Position of the movable knife Adjust movable knife A so that the bottom of movable...

Page 8: ...er C adjust the position to which the movable knives protrude With the needle bar at the top of its stroke press the center of movable knife base B until the movable knives touch the stopper Loosen sc...

Page 9: ...assembly by following the reverse procedures of the above after performing preventive maintenance 7 ADJUSTING THE AIR WIPER The outlet of air wiper C should be positioned approximately 10mm to the rig...

Page 10: ...r the needle and looper threads according to the distance in the illustration below To increase the amount of the thread to be released decrease distance A To decrease the amount of the thread to be r...

Page 11: ...on the right Install the thread eyelets for the needle and looper threads according to the distance in the illustration below To increase the amount of the thread to be released decrease distance A To...

Reviews: