10
(3) Threading the machine head
Threading the upper thread (needle thread)
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
Standard Optional
DANGER :
1. If you find the sewing machine is too heavy to lift, the gas spring may have malfunctioned due to
outgassing.
Never
lift the sewing machine in such a state since the machine can drop to pinch hands, fingers
and arms resulting in serious injury.
*
Be sure to fully understand the standard of replacing time of the gas spring on p.56 and its re-
placement procedure on p.57 before putting the sewing machine into operation.
2. In order to prevent pinching of hands, fingers and arms that can result in a serious injury, be
sure to strictly observe the following when carrying out work.
2-1. Be sure to hold the rib on the bed periphery when holding the sewing machine.
2-2. Be sure to lock the hinge stopper to firmly secure the sewing machine in its raised position.
Threading the lower thread (looper thread)
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