Sears 12581 Section, Performance, Problems, Chart, What to Do When, pull, Choose, correct, fabric

SECTION 4.

PERFORMANCE

PROBLEMS

CHART

What to Do When

PROBLEM

PROBABLE

CAUSE

CORRECTION

Incorrect

size

needle.

Choose

correct

size

needle

for

thread

and fabric.

Improper

threading.

Rethread

machine,

Irregular Stitches

Loose

upper

thread

tension.

Tighten

upper

thread

tension.

Pulling

fabric.

Do not

pull

fabric;

guide

it gently.

Loose

presser

foot.

Reset

presser

foot.

Unevenly

wound

bobbin,

Rewind

bobbin.

Nicks

or

burrs

at

hole of

needle plate.

Replace

needle

plate,

or polish

off

burrs

completely.

Pulling

fabric.

Do not

pull

fabric;

guide it gently.

Breaking Needle

Incorrect

size

needle.

Choose

correct

size needle for thread

and fabric.

Incorrect

setting

of

needle.

Reset needle,

Loose

presser

foot.

Reset presser foot.

Bunching of Thread

Upper

and lower

threads

not drawn

back

When

starting

a seam

be sure

to draw

both threads

under and

under

presser

foot

before

starting

seam.

back of

presser

foot

about

4"

and

hold

until a few

sdtchs are

formed.

Incorrect

thread

tension(s).

Reset

thread

tension(s).

Puckering

Using

two

different

sizes

or kinds

of

thread.

Upper

thread

and bobbin

thread should

be same size and kind.

Bent

or blunt

needle.

Insert

new needle.

Loose

presser

foot.

Reset

presser

foot.

Fabric

very sheer

or

very

soft.

Use underlay

of

tissue

paper.

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