SINGER 143G2 - Manual (Page 5)

Fig. 6. Oiling Pointa and Adjustments Underneath the Machine
Oil the bobbin case bearing In the hook race each time a
bobbin Is replaced.
Needles
Needles f o r Machines 143G2 and 143G3 are Catalogue 1901
(l35x7), made In sizes 7,8,9,10,12,14,16,18,20,22 and 24.
The size of the needle to be used should be determined by the
size of the thread which must pass freely through the eye of the
needle. If rough or uneven thread Is used, or If It passes with
difficulty through the eye of the needle, the successful use of
the machine will be Interfered'with.
Orders for needles must specify the QDAOTITÏ required, the
SIZE and also the Catalogue number.
The following is an example of an intelligible order«
”100 size H, Catalogue 1901 Needles”.
Best results will be obtained with needles sold by Singer
Sewing Machine Company.
Relative Sizes of Needles and Thread
Size Numbers
of Needles
For Cloth Work
Cotton Silk
12 70 to 100 00 to A
14 50 to 70 A, B
16 40 to 50 B, C
18 30 to 40 C, D
20 24 to 30 D, E
To make a smooth, even stitch with your sewing machine, use
good, firmly twisted and smoothly finished thread, that passes
freely through the eye of the needle.
7
In using slack twist or uneven silk,should It be frayed or
roughened, see whether the needle Is too fine or too sharp, or
has a hooked point, made by striking the throat plate.
For ordinary work use the same size of thread on the bobbin
as In the needle. Always use soft finished thread on the bobbin.
Thread
Left twist thread should be used In the needle. Either right
or left twist thread can be used In the bobbin.
Hold the thread as shown above. Turn the thread over toward
you between the thumb and the forefinger of the right hand; If
left twist, the strands will wind tighter; If right twist, the
strands will unwind. Use soft finish thread of the same size for
the needle and the bobbin.
Fig. 8. Removing the Bobbin case
To Remove the Bobbin Case
Lift the bobbin case latch, as shown In Fig. 8, and draw the
bobbin case out from you, turn Its open end down and release the
latch and the bobbin will drop out.