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1-6. Thread breakage detector plate
1) Adjust so that thread breakage detector plate
❶
is always in contact with thread take-up spring
❷
in the absence of needle thread. (Slack : ap-
prox. 0.5 mm)
2) Whenever the stroke of thread take-up spring
❷
has been changed, be sure to readjust
thread breakage detector plate
❶
. To make
this adjustment, loosen screw
❸
.
Adjust so that thread breakage de
-
tector plate
❶
does not touch any
adjacent metallic parts other than
thread take-up spring
❷
.
❷
❸
❶
When polyethylene oiler
❶
becomes filled with oil,
remove polyethylene oiler
❶
and drain the oil.
1-7. Draining waste oil
❶
1) The oil quantity to be supplied to the hook is
decreased by tightening adjustment screw
❶
.
2) The oil quantity to be supplied to the hook is
increased by loosening adjustment screw
❶
.
1-8. Adjusting the amount of oil supplied to the hook
❶
When reducing the oil amount, do
not screw in the screw once. Ob-
serve the state for approximately
half a day and screw
❶
. If reduc-
ing is excessive, worn-out of the
hook will result.