Checking The Thread Trimmer Cam Timing - JUKI DLN-6390 Manuel D'utilisation

2. Checking the thread trimmer cam timing
!2
Thread trimmer cam
Operaton of steps ) through 8) s the same as that of
"Checkng the recedng poston of the movng knfe".
Gauge
Perform the steps ) through 8).
9) Then turn the handwheel 7 n the normal drecton of
rotaton of the sewng machne A whle depressng
the back part of pedal 8 n the drecton B .
(Movng knfe lever 9 turns clockwse n the drecton
M
H and movng knfe !0 starts movng n the drecton
K L
I after the movng knfe has fully receded, and the
movng knfe returns to the watng poston.)
0) Turn handwheel 7 n the reverse drecton J of
rotaton of the sewng machne after the movng
knfe has returned to the watng poston, and the
handwheel stops turnng at a certan angle.
) At ths tme, the thread trmmer cam tmng s normal
f the heght of the needle bar from the top surface of
the throat plate s 46.8 to 47.4 mm.
＊ The tmng can be checked wth ease when usng the
gauge suppled wth the machne as accessores.
When secton K of the gauge enters between the
throat plate and the bottom end of the needle bar and
secton L does not enter, the heght of the needle
!3
bar s wthn the range of 46.8 to 47.4 mm. Then the
thread trmmer cam tmng s normal.
＊ When enterng the gauge under the bottom end of the
needle bar, loosen setscrew !2 and remove presser
foot !3 . After the completon of the operaton, return
presser foot !3 to the home poston and securely
tghten setscrew !2 . (Tghtenng torque : .5 to 2 N·m)
2) When the heght of the needle bar from the top
surface of the throat plate s not 46.8 to 47.4 mm, the
thread trmmer cam tmng s not proper. Correct the
thread trmmer cam tmng n accordance wth the
Engneerng Manual.
�e sure to turn ��� the power switch of
the sewing machine after the operation in
steps 4) through 10) has been completed.
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