Pfaff hobbylock 756 Owner's Manual - Page 38

DIFFERENTIAL

FEED

(with

differential

feed

machine

only)

*

Differential

feed

is

a

system

which

“stretches”

or

“gathers”

the

fabric,

when

amount

of

feed

of

front

feed

dog

in

relation

to

the

rear

feed

dog

is

changed.

*

The

differential

feed

ratio

ranges

from

1:0.77

1:2.0.

Adjustment

is

made

by

means

of

the

dif

ferential

feed

adjusting

lever

as

shown.

*

Use

of

differential

feed

is

very

effective

in

over-

edging

stretch

fabrics

and fabrics

cut

on

the bias.

(1)

Gathered

Overedge

(Use

regular

throat

plate)

*

Gathered

overedge

is

most

suited

for

shirring

sleeves,

yokes,

front

and

back

bodices,

skirt hems,

etc.

in

stretch

fabrics

such

as

knits

and

jersey

be

fore

assembling

into

garment.

To

set

the

differential

feed

adjusting

lever

*

Open

looper

cover

and

loosen

differential

feed

adjusting

lever

thumb

screw.

*

Slide

adjusting

lever

downward

below

the

center

mark,

as

required,

to

gather,

and

tighten

the

thumb

screw.

Note:

The

setting

position

of

the

lever

will

differ

de

pending

on

the

material

being

sewn

and

the

amount

of

feed

for

shirring.

*

When

differential

feed

adjusting

lever

is

set

to

maximum

gathering

ratio,

the

stitch

length

will

automatically

change

to

3mm

(7/64inch)

if

previous

setting

was

higher

than

setting

“3”.

*

Be

sure

to

reset

the

differential

feed

adjusting

lever

to

center

mark

for

normal

overedge

stitching.

36

Feed

Control

Lever

Center

Mark

Tighten

Gather

Loosen

J

Pfaff hobbylock 756 Owner's Manual - Page 38

Differential

Page 38 highlights