−59 −
8) Adjustment of tension release (equipped with thread trimmer)
1 Disk floating timing
When the presser foot is lowered :
™ Tongue #6 in 5 places is near thread tension disk
#7 and should not come in contact with it. (0.8
mm)
™ Thread tension disk #7 should open immediately
after the start of thread trimming.
™ Tongue #6 should enter thread tension disk #7
smoothly.
(Caution) The thread trimming mechanism and
thread tension release mechanism are
interlocked. When they do not work
smoothly, check the thread tension
release mechanism.
2 Thread hauling amount
™ Adjust the length of remaining needle thread from
the needle eyelet after thread trimming with thread
tension release hook for needle thread $3 in 3
places.
™ Raise thread tension release hook $3 to shorten
the length of the remaining thread and lower
thread tension release hook $3 to lengthen the
length of the remaining thread.
™ Adjust thread tension release hook for top
covering thread $4 so that top covering thread is
correctly clamped after thread trimming.
™ Adjust thread tension release hook for looper
thread $5 so that looper thread is correctly
clamped after thread trimming.
0.5 to 0.8 mm
LED
$8
$9
%0
$5
$4
$3
#7
$0
#6
#8
#9
$1
0.8 mm
MFC
Standard Adjustment
9) Adjustment of proximity switch
This is a contactless switch which prevents the sewing machine from turning due to the defective
return of thread trimmer solenoid.
Adjust the thread trimmer solenoid so that LED lights up when it returns and is turned off during the
thread trimming.
The clearance is to be 0.5 mm to 0.8 mm.
From the library of: Diamond Needle Corp
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