Pfaff hobbylock 797 Owner's manual

Brand: Pfaff

Model: hobbylock 797

Category: Sewing machines

Type: Owner's manual

IflUW

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Notes

on

safety

A)

Owing

to

the

up

and

down

movement

of

the

needle,

the

user

must

take

sufficient

care

to

avoid

injury

and

observe

the

sewing

area

continuously

while

sewing.

B)

When

leaving

the

machine,

changing

parts

or

accessories,

the

machine

must

be

disconnected

from

the

power

source.

C)

The

maximum

approved

wattage

of

the

light

bulb

is

15

watts.

D)

The

drive

belt

must

never

be

adjusted

by

anyone

but

an

authorized

Pfatf

agent,

contents

Controls

of

the

sewing

machine

2,

3

Accessory

box

4

Electrical

connection

4,

5

Foot

control

5

Installing

the

thread

spool

stand

6

Threading

diagram

on

the

lint

box

7

Needle

combinations

8

Threading

the

right

looper

9

Threading

the

left

looper

10

Threading

the

two-thread

chainstitch

looper

1

1

Threading

the

needles

12

Inserting

the

lint

box

13

Setting

the

standard

thread

tension

14

Sewing

test

15

Points

to

observe

during

sewing

16

Securing

the

seam

17

5-thread

safety

seam,

2-thread

chainstitch

with

overedge

stitch

18

3-

and

4-thread

overedge

seam

19

Checking

and

adjusting

the

thread

tension

20—22

Regulating

the

sewing

foot

pressure

22

3-thread

overedge

seam

23

Thread

chart

for

5-thread

overedge

seam

24

Thread

chart

for

4-thread

overedge

seam

25

Adjusting

the

stitch

length

25,

26

Adjusting

the

differential

teed

27,

28

Disengageing

the

upper

knife

29

Disengageing

the

overedge

looper

29

Adjusting

the

machine

for

two-thread

chainstitch

seam

29,

30

Inserting

the

workpiece

guide

plate

30

Adjusting

the

seam

width

31

Changing

the

sewing

foot

32

Sewing

rolled

hems

33,

34

Changing

the

needles

35

Changing

the

lower

knife

36

Changing

the

upper

knife

37

Changing

the

light

bulb

38

Cleaning

the

thread

tensions

38

Oiling

the

machine

39

Sewing

problems

and

their

removal

40

Accessories

41

Specifications

41

Thread

spool

net

42

Optional

accessories

42—44

1

Controls

of

the

sewing

machine

1

Foot

pressure

regulating

dial

2

Thread

guide

3

Carrying

handle

4

Left

needle

thread

tension

dial

5

Right

needle

thread

tension

dial

6

Right

looper

thread

tension

dial

7

Left

looper

thread

tension

dial

8

Looper

thread

tension

dial

for

two-

thread

chainstitch

9

Thread

tension

cover

10

Knife

guard

11

Hand

wheel

and

feed

regulator

12

Looper

cover

13

Looper

cover

recess

14

Upper

knife

15

Work

support

16

Differential

feed

adjustment

knob

17

Needle

plate

18

Sewing

foot

19

Needle

bar

20

Sewing

foot

lifting

lever

21

Thread

spool

stand

22

Thread

spool

holder

23

Machine

socket

24

Master

switch

25

Lint

box

26

Foot

control

27

Foot

control

plug

28

Mains

plug

29

Lower

knife

30

Knife

clamp

screw

31

Right

looper

32

Left

looper

33

Two-thread

chainstitch

looper

34

Thread

guides

behind

the

carrying

handle

35

Seam

width

adjustment

knob

behind

work

support

15

27

31

I

Accessory

box

Open

the

work

support

and

pull

out

the

accessory

box.

To

replace

the

accessory

box,

slide

it

into

the

grooves

and

push

it

in

as

far

as

it

will

go.

The

accessories

are

illustrated

on

page

41.

Electrical

connection

Use

this

machine

only

on

a

flat

surface

or

on

a

special

sewing

table.

Connecting

the

foot

control:

Insert

the

plug

of

the

control

in

the

machine

socket.

Then

connect

the

mains

plug

to

a

power

source.

Caution:

When

the

machine

is

not

in

use,

switch

it

off

at

the

master

switch

and

disconnect

the

plug

from

the

power

source.

Do

not

place

any

objects

on

the

foot

control.

j

Switching

the

machine

ON

and

OFF

1

Power

and

sewing

light

are

switched

on

and

off

simultaneously

with

the

master

switch.

Foot

control

The

speed

of

the

Hobbylook

is

regulated

as

follows:

The

more

you

press

the

foot

control

down,

the

faster

the

machine

will

sew,

Electronic

toot

control

Maximum

speed

can

be

preselected

in

two

steps

by

the

switch

on

the

foot

control.

Position

=

Half

speed

Position

44

=

Full

speed

Switching

on:

Press

switch.

Machine

and

sewing

light

are

switched

on.

Switching

off:

Press

switch

again.

Machine

and

sewing

light

are

switched

off.

5

Installing

the

thread

spool

stand

Loosen

clamp

screw

a

little

and

pull

washer

up to

the

screw

head.

Insert

thread

spool

stand

from

the

top.

thread

spool

holders.

Push

the

thread

guiding

part

into

the

guide

bar.

Pull

up

guide

bar

and

align

it

so

that

the

Tighten

clamp

screw.

Insert

the

five

thread

guides

are

exactly

above

the

spool

holders.

behind

it:

Insert

fingers

into

groove

of

the

carrying

handle

and

pull

it

up,

then

the

Carrying

handle

and

thread

guides

thread

guides

34

will

be

visible.

•

Opening

and

closing

looper

cover

and

work

support

Push

looper

cover

to

the

right

and

swing

it

down.

To

close

the

looper

cover,

push

it

up

until

it

locks.

To

open

the

work

support,

push

it

to

the

left.

To

close

the

work

support,

push

it

to

the

right

until

it

locks.

Selecting

the

stitch

type:

Behind

the

looper

cover,

the

individual

stitch

types

from

1

to

6

are

shown.

The

respectively

necessary

needle

combinations

(A,

B.

and

C)

and

the

thread

tensions

to

be

used

are

indicated

by

colors.

Below

this,

a

needle

diagram

with

the

respective

set

screws

is

shown.

Threading

paths

of

the

stitch

types

on

the

back

of

the

lint

box

The

right-hand

side

shows

the

stitch

types

(1—6)

with

the

respective

adjustment

points

A.

Each

threading

path

has

its

own

color.

Position

the

slide

so

that

the

adjustment

point

of

the

stitch

type

desired

(1—6)

is

filled

out

orange.

Now

thread

along

all

threading

paths

marked

with

color,

see

pages

9—i

2.

Additionally,

at

B

it

is

possible

to

see

whether

the

overedge

looper

has

to

be

engaged

or

disengaged

(see

page

29>.

The

color

markings

of

the

threading

paths

required

are

additionally

indicated

on

the

table

behind

looper

cover

12

7

Threading

procedure

Threading

must

be

done

correctly

to

obtain

a

well-formed

seam.

Thread

the

machine

in

the

following

sequence:

1.

Right

looper

(green)

2.

Left

looper

(yellow)

3.

Chainstitch

looper

(mauve)

4.

Needle

thread

tension

(blue)

5.

Needle

thread

tension

(pink)

Diagram

B

shows

threading

of

the

thread

guides

behind

the

carrying

handle.

Diagram

C

shows

threading

of

the

thread

tensions.

Now

pull

the

respective

thread

into

the

corresponding

guides

and

tension

discs.

When

threading

is

completed,

push

the

carrying

handle

fully

down

again.

Needle

combinations

On

the

table

behind

looper

cover

12,

the

needle

combinations

for

stitch

types

ito

6

are

indicated.

Remove

the

needles

that

are

not

necessary

by

loosening

set

screws

A,

B,

or

C

(For

needle

change,

see

page

35.)

B

AS

—

Threading

the

nght

looper:

Thread

the

right

looper

in

sequence

1

to

9

and

pull

approximately

10

cm

(4”)

of

thread

through

the

looper

eye

(the

thread

path

is

marked

green).

Important:

In

order

to

obtain

perfect

sewing

results,

the

thread

must

be

pulled

between

the

tension

discs

when

threading

the

tensions.

9

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Threading

the

needles

The

needles

must

be

threaded

in

sequence

blue

—

pink.

Threading

the

two-thread

chainstitch

needle

(A):

Thread

the

two-thread

chainstitch

needle

in

sequence

1

to

7.

The

thread

path

is

marked

blue

(triangular

symbol).

Important:

At

point

6,

pull

the

thread

into

the

guide

wire

eye

from

the

right,

then

pull

about

5

cm

(2”)

of

thread

through

the

needle

eye.

Threading

needle

B

or

C

(with

or

without

needle

A).

Thread

the

overedge

needle

in

sequence

1

to

6.

The

thread

path

is

marked

pink

(point

symbol).

Important:

At

point

5,

pull

the

thread

from

the

right

behind

the

black

thread

retainer

and

the

thread

guide

wire

above

it.

Then

pull

about

5

cm

(2”)

of

thread

through

the

needle

eye.

—

Threading

overedge

needles

B

and

C

(without

needle

A).

Thread

overedge

needles

B

and

C

in

sequence

1

to

6.

The

thread

path

for

needle

B

is

marked

blue

(point

symbol),

the

one

for

needle

C

is

marked

pink

(point

symbol).

In

this

case,

pull

both

threads

behind

the

black

thread

retainer

and

the

thread

guide

wire

above

it.

Then

pull

about

5

cm

(2”)

of

thread

through

the

needle

eyes.

Important:

Only

sew

with

either

one

or

two

needles

(depending

on

stitch

type).

Now

close

the

work

support

(1),

push

the

handle

down

(2)

and

close

the

looper

cover

(3).

Inserting

the

lint

box:

Insert

the

tabs

of

the

lint

box

into

the

slots

(4)

of

the

front

cover.

Seam

depth

scale

Example:

If

the

seam depth

of

the

cutting

is

to

be

20

mm,

the

cut

fabric

edge

must

be

guided

along

the

2Omm

mark on

knife

guard

10.

Push

the

lint

box

up

against

the

front

cover

until

it

snaps

in

place.

Use

the

reverse

order

to

remove

lint

box.

Setting

the

standard

thread

tension

The

thread

tension

to

be

set

depends

on

the

fabric

type

and

thread

size

used.

Make

the

correct

adjustment

after

examination

of

the

interlocking

of

the

threads

(see

pages

18

to

22).

Set

the

N

on

the

thread

tension

dials

opposite

the

respective

color

symbol.

Only

for

the

blue

thread

tension

there

are

two

standard

settings:

When

using

needle

A

(only

for

two-thread

chainstitch),

the

N

must

be

set

opposite

the

blue

triangular

symbol.

Only

for

stitch

type

6

(needles

B

and

C),

the

standard

thread

tension

N

for

needle

B

must

be

set

opposite

the

blue

point

symbol.

The

mauve

tension

is

only

needed

for

two-thread

chainstitch.

-j

Sewing

test

After

threading,

a

sewing

test

test

should

be

made.

Raise

sewing

foot

lever

20.

as

shown

in

the

illustration.

Insert

test

fabric

up

to

the

upper

knife

and

lower

the

sewing

foot.

Hold

thread

ends

with

your

left

hand

while

turning

hand

wheel

with

your

right

hand

in

the

direction

ndicated

by

the

arrow.

In

doing

so.

the

threads

must

be

guided

to

the

rear,

under

the

presser

foot

Make

sure

that

threads

have

inter

locked

correctly.

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35

04

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‘*

Securing

the

seam:

Or:

Knot

the

thread

chain.

For

knit

fabrics,

a

crochet

needle

can

be

used

to

pull

the

thread

chain

into

the

seam.

Sew

about

5

cm

(2)

beyond

the

end

of

seam.

Then

turn

the

workpiece

around

and

sew

a

few

stitches

over

the

seam

just

sewn

without

cutting

the

thread

chain.

On

this

machine,

all

kinds

of

fabric

from

extremely

thin

to

extremely

thick

can

be

processed.

When

sewing

extremely

thick

fabrics

or

workpieces

with

different

thicknesses,

the

screw

of

the

upper

knife

must

be

tightened,

as

shown

in

the

illustration.

When

sewing

thin

or

medium

fabrics,

the

screw

of

the

upper

knife

holder

must

be

loosened

by

about

2

turns.

Explanation:

The

screw

of

the

upper

knife

holder

serves

to

tighten

or

loosen

the

horizontal

guide

of

the

upper

knife.

17

Face

side

I

I

Two-thread

chain-

stitch

top

side

I

I

Two-thread

chainstitch

Stitch

type

1.

sewn

with

needle

A

Thread

tensions:

blue

=

triangular

symbol

mauve

=

triangular

symbol

Application

examples:

Joining

seams

on

linen

goods,

jeans,

without

serging

seam.

_______

Two-thread

chainsttch

underside

Reverse

side

Face

sice

Two

thiead

chain-

stitch

top

side

Overedge

stitch

top

side

r

-.

Overedge

stt

h

underside

‘-

Two-thread

Reverse

side

Cli

a

n

at

t

cii

underside

5-thread

safety

seam

Two-thread

chainstitch

with

overedge

stitch

(narrow)

Stitch

type

2,

sewn

with

needles

A

and

C

Thread

tensions:

blue

=

triangular

symbol

pink

=

point

symbol

green

=

point

symbol

yellow

=

point

symbol

mauve

=

triangular

symbol

Application

examples.

Joining

seams

on

blouses,

shirts,

jeans

and

bed

linen

with

serging

seam

5-thread

safety

seam

Two-thread

chainstitch

with

overedge

stitch

(wide>

Stitch

type

3.

sewn

with

needles

A

and

B

Thread

tensions

blue

—

triangular

symbol

pink

=

point

symbol

green

-=

point

symbol

yellow

=

point

symbol

mauve

=

triangular

symbol

Application

examples:

Same

as

stitch

type

1

and

2

but

with

wide

serging

seam.

Face

side

Two

thread

chain

stitcn

top

side

--

Reverse

side

chainstitch

u

ndersde

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Pfaff hobbylock 797 Owner's manual

Brand: Pfaff

Model: hobbylock 797

Category: Sewing machines

Type: Owner's manual

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