Manual
Test the tension of the shuttle thread by drawing it towards the
round end of the shuttle. If it draws as tightly as it will bear
withoxit breaking, it is right for fabrics of firm texture. Thin, soft
fabrics require less tension. To obtain more or less tension, pass
the thread through more or less holes. (See page 4, “ To Thread
the Shuttle.”)
The tension of the needle thread is regulated by turning the
tension screw (5). To test the tension, draw the thread downward
from the check lever (15), turning the screw (5) to the right, until
the thread draws as tightly as it will bear without breaking. For
thin, soft fabrics less tension is required.
TO REGULATE THE TENSIONS.
TO ALTER THE LENGTH OF STITCH.
Loosen the screw (66) in the slot in the bed of the machine and
move it to the right to lengthen, or to the left to shorten the stitch.
When the required length of stitch is obtained tighten the screw.
The shorte.st possible stitch is obtained by changing the screw into
the hole at the end of the stitch regulator (65) and moving it to the
left in the slot as far as it will go.
TO OIL THE MACHINE AND STAND.
If used constantly, the machine should be oiled daily, while
with moderate use, an occasional oiling is sufficient, a drop of oil
being applied at each of the following places : the sides of the
needle bar (9), in the four holes on the top of the arm, the two
holes on the side of the arm, the shuttle carrier slide, both ends of
the pitman (53) and feed lever (61), the feed raising cam (62), the
centre joint of the feed lever, and the slot of the feed guide.
To oil the stand, apply a drop of oil to the treadle bearings, both
ends of the wooden pitman and the axle of the band wheel.
After oiling, run the machine rapidly for a few minutes, after
wards wiping off any superfluous oil.
If the machine works hard while in constant use it is certain
that some place requiring oil has been overlooked. If it works hard
after being out of use for some time, or after using inferior oil, use
a little ]>araffin, run the machine rapidly for a few minutes, wipe
clean and then oil with Singer Superior Machine Oil.