Bernina 531 Manual - Page 14

Thread

Tension

Box

Fig.

9

The

thread

tension

is

designed

to

operate

without

special

adjustment

for

all

normal

sewing

and

mending

work.

A

sight

hole

is

provided

on

the

upper

portion

of

the

thread

tension

box,

which

is

equipped

with

a

reference

line

34

on

either

side.

Below

this

reference

line

is

situated

the

white

ring

35

on

the

adjusting

nut

36,

marking

the

normal

adjustment

of

the

thread

tension.

To

set

the

tension

turn

adjusting

nut

36

until

the

white

line

in

level

with

the

reference

line

34.

4

37

Fit.

10

22

Fixing

the

Slide

-on

Table

Fig.

10

The

slide

-on

table

37

is

ac-

commodated

in

the

rear

wall

of

the

carrying

case

and

held

there

by

means

of

a

bolt.

Swivelling

the

bolt

to

the

right

releases

the

table.

When

the

table

is

slid

onto

the

free

arm,

make

sure

that

the

locking

lever

3S

is

pointing

to

the

right.

In

or-

der

to

clamp

the

table

to

the

free

arm

rigidly,

the

lever

is

moved

to

the

left.

Cleaning

and

Oiling

Cleaning

the

Machine

rigs.

11

and

12

Fluff

is

collected

during

sewing

particularly

around

the

shuttle.

Such

fluff

may

detri-

mentally

affect.

the

proper

function

of

any

machine

and

it

is

absolutely

necessary

to

remove

it

frequently.

From

time

to

time,

re-

move

cover

plate

1

so

that

the

fluff

forming

under

the

needle

plate

can

be

removed.

The

cover

plate

is

accordingly

designed

for

quick

removal,

so

that

cleaning

and

oiling

can

be

effected

easily.

To

remove

the

cover

plate,

open

the

hinged

39

plate

and

depress

the

releasing

lever

40

(cf,

Fig.

11)

with

the

index

finger

of

the

right

hand.

The

presser

foot

need

not

be

removed

but

the

needle

should

be

placed

in

its

raised

position.

(4]

Fig.

11

23

Bernina 531 Manual - Page 14

Cleaning, Oiling

Page 14 highlights