SINGER W117 - Manual (Page 19)

2. Wrong Needle being used: ,
Be sure you are using the correct needle for this machine.
3. Needle incorrectly set—too low:
- See instructions elsewhere in this book on how to prop,
erly set needle and follow instructions carefully.
Needle Rubs on Presser Foot:
Adjust foot as described “Needle rubs on Presser Foot"
under “Skips Stitches”.
Needle not firmly set:
After being certain needle is properly set be sure it is
held tight by needle clamp screw—use a screw driver.
4.
5.
' '-i
2.
---■i
1/
%
1.
-'
■
2.
3.
If Puckers On Ordinary Material
The trouble may be caused by—
1. Tensions NOT in balance:
Reduce the'tension on upper thread by- moving indicator
towards No. 1. Do some testing. If this fails, examine
lower tension on bobbin case for proper adjustment and
proceed to balance the tensions. See instructions else­
where in this book on tension adjustment.
Blunt Needle—Replace with a new straight needle—ex­
amine needle point.
The trouble may be caused by—
Both tensions may be too tight: ^
Adjust upper and lower tensions—must be in balance.
For chiffon and other very light materials, best results
are obtained with upper tension set at % and the lower
tension in balance with that. However, sufficient tension
must be maintained to raise the small auxiliary spring
(No. 4 in Fig. 3) when machine is in operation.
Presser foot loose in holder:
Tighten knurled thumb screw.
Blunt Needle:
Replace with new straight needle—examine needle point.
Thirty-four
1 .
2
.
Needle Plate:
1, in this plate might be slightly bent down. N.
hole might be rough from needle striking it
eifhir «.se a new needle plate is required.
Loose Stitching
The trouble may be caused by—
Tension too loose—either top, bottom or both:
gee instruction.-» elsewhere on tension adjustment
balance.
Upper Tension fails to Operate Satisfactorily:
T int or stray threads lodged between tension plate Nc
n ¡L the presser foot lifter (see illustration). Set
fension regulator at figure No. 1, next cut a piece of 1
_ cloth to a point and di
this strip of cloth thrm
and under tension pi
No. 1 and close to sci
No. 3 on the side from »
as shown in illustrati
This cloth should be dra
down through tension ph
No. 1 and washer No. 2 i
shown in illustration), t
can be accomplished
holding tension plate (T
1) and washer (No.
apart with a small sen
driver. Be careful to dri
the cloth between pis
No. 1 and washer No.
When you have this do
in place, drop the press
bar lifter, move the te
sion regulator toward N
8 and pull the cloth up ai
down a few times which will remove any bits of thread i
lint from between tension plate No. 1 and washer No.
Thirty-five