Counter Knife - Jack JK-8995 Manual

•The following hooks are used for 8990DS and 8991DS. When replacing the hook, use the hook of Part No.
corresponding to your destination since the usual hook cannot be used.
Type as follows 1141800 I
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Turn OFF the power before starting the work so as to prevent accidents caused by abrupt
start of the sewing machine.
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When the knife sharpness has deterorated , resharpen
counter knife(j)as illustratedin(O,and properly reinstall
it.
1)
If
the mounting position of the counter knife is moved
in direction
@
from the standard mounting position,
the thread length after thread timming will be increased
accordingly.
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2) If
the mounting position is moved in direction@ ,
the thread length will be decreased accordingly.
(Caution) When re-sharpening the knife blade, extra
special care must be taken on the handling of the
knife.
- 23 -