40
8.11) Trimmer
8.11.1) Adjustment of Moving Blade
The moving blade
①
feeds the upper and lower
thread to the fixed blade. The moving blade
①
conducts the rotary movement to the extent that it
does not touch the bobbin case. Trimming is
conducted through the contact with the fixed blade
②
at the 1/3 point in length. Adjustment can be made in
the following order.
1) Loosen the fixing screw for the moving blade
shaft crank
③
.
2) When the thread take-up lever is at the highest
point, adjust the tip of the moving blade to be
1mm away from the fixed blade.
3) Press the moving blade. While the moving blade
shaft crank
④
is being lifted, tightly fasten the
fixing screw for the moving blade shaft crank
③
.
①
[Fig. 8-18]
②
③
④
8.11.2) Fixed blade and Lower Thread Holder
The moving blade
①
contacts the fixed blade
②
at
the 1/3 point of its length to conduct trimming as
safe as possible with the minimum pressure. When
trimming is made, the lower thread holder
③
contacts
the moving blade
①
, securely holding the lower
thread. Adjustment can be made in the following
order.
1) Insert the lower thread holder
③
and the fixed
blade
②
into the groove on the fixed blade base
④
, and tightly fasten them using the fixing screw
⑤
and the tightening screw
⑥
.
2) Adjust the top of the fixed blade and the top of
the moving blade to overlap.
Place the moving blade at the 1/4 or 1/3 point of
the fixed blade. Make sure that the fixed blade
stays firm, and tightly fix the fixed blade using
the fixed blade base fixing screw
⑦
.
③
①
⑦
⑤
⑥
④
②
[Fig. 8-19]
Содержание KM-1080 Series
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