Operation Manual

ManualsBrandsPfaff ManualsMiscellaneousHobbylock 776

b.

Adjusting

the

stitch

length

1.

Fully

open

the

side

cover

by

pushing

away

from

you.

2.

Turning

the

pulley

wheel

with

your

Right

Hand,

set

the

required

stitch

length

by

turning

the

feed

regulator

control

dial

(see

right)

NOTE:

Standard

stitch

length

is

3mm.

3.

After

this

adjustment,

close

side

cover

C.

Differential

feed

mechanism

The

differential

feed

mechanism,

consists

of

two

sets

of

feed-dog

teeth

moving

independ

ently

to

produce

an

even

stitch

formation

on

woven

or

knitted

fabrics,

and

also

other

other

wise

troublesome

materials.

When

adjusted

correctly,

it

will

eliminate

uneveness

and

puck

ering

of

seams.

The

ratio

of

the

differential

is

that

of

the

feed

of

the

rear

feed-dog

teeth,

against

the

feed

of

the

front

feed-dog

teeth.

These

can

be

adjusted

infinitely

from

0.8mm

to

2.0mm.

To

make

these

adjustments

follow

the

instruc

tions

below:

—

1.

Open

the

side

cover

(as

for

stitch

length

above).

2.

Push

the

differential

feed

regulator

knob

backwards,

in

the

direction

of

the

arrow

-

see

illustration

and

at

the

same

time

set

the

required

differential

ratio,

by

sliding

it

up

or

down.

3.

After

completing

the

adjustment,

close

the

side

cover.

NOTE:To

achieve

the

correct

final

setting

it

will

be

neccssary

to

experiment

with

various

ratios,

using

spare

pieces

of

the

same

fabric

and

thread

you

intend

using,

until

a

satisfactory

result

is

ob

tained.

Setting

of

Fabric

differential

feed

0.8

Nylon,

tricot,

lining

fabrics,

satin,

polin,

silk,

and

light

cotton

Jeans

(Normal

fabrics)

N

I

.5

Jersey,

medium

cotton,

nicki

fabrics,

light

knitting

Heavy

knitwear,

very

elastic

2

2.0

fabrics,

rib

stitch

goods

16