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3
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(3) Cautions in operation
1) Be sure to drain oil in the oil tank and attach the air vent cap (red rubber cap) supplied with the machine
to the air vent (golden bushing) located on the side face of the machine bed when transporting the
sewing machine.
2) In the case where placing SS or SU type machine on a stand or the like before setting the machine to
the machine table, to protect the oil tank from damage, take care if there is any protruding object under
the stand or the like.
3) Be sure to securely set the connector of the safety switch to the control box to prevent accidents at the
time of maintenance.
4) Oil is kept in the gear box for lubrication. It is not necessary to replace the oil. Do not remove the gear
box cover except when it is necessary.
* When the box cover has been removed, it is necessary to replace the packing.
5) Be sure to operate the sewing machine with the bobbin case removed when making the sewing machine
run idle.
If the bobbin thread is in the bobbin case, the thread protrudes from the bobbin case and is entangled
in the hook race or the hook shaft. As a result, the trouble will be caused.
