Pfaff hobbylock 788 User Manual

p

fr:

\

hobbylock

787

•

788

Instruction

manual

IMPORTANT

SAFETY

INSTRUCTIONS

-This sewing	rrachine is	designed	and manufactured for HOUSEHOLD use
When using	an electric	appliance,	basic safety precautions should always
including the	following:

only. be followed,

Read

all

instructions

before

using

this sewing

machine.

D

AI\IG

ER

To

reduce

the

risk

of

electric

schock:

1.

2. 3. 4.

The		sewing machine should never be				left unattended when plugged			in.	Always
unplug			this appliance		from the electric outlet immediately after using				and	before
cleaning.
Always			unplug before		relamping. Replace bulb with same type rated			15	Watts.
Do	not reach			for a sewing machine that		has fallen into water. Unplug		immediately.
Do	not		place	or store	sewing machine	where it	can fall or be pulled	into a		tub or
sink.		Do	not place in or drop into water			or other	liquid.

VV

To	reduce	the
to	persons:

risk

of

burns,

fire,

electric

schock,

or

injury

1. 2. 3.

4.

5. 6. 7.

8. 9.

Do not allow to be

used as

a toy. Close attention

is

necessary when

this

sewing

machine

is used

by or near children.

Use this

sewing

machine only for its intended use

as

described in this

manual. Use

only attachments recommended by the manufacturer

as contained

in this manual.

Never

operate this

sewing

machine if it has a

damaged

cord or

plug, if it is not

working

properly,

if

it

has

been dropped or

damaged,

or dropped

into

water.

Return

the appliance

to

the

nearest authorized

dealer or

service center for

exami

nation, repair, electrical

or mechanical adjustment.

Never operate the sewing machine with any air openings
openings			of the sewing machine and	foot controller free
lint, dust,			and loose cloth.
Never		drop or insert any object into any opening.
Do	not	use outdoors.
Do	not	operate where aerosol (spray)		products are being
bein-g administered.

blocked.		Keep ventilation.
from	the	accumulation	of
used	or	where oxygen	is
		-

To	disconnect,		turn		all controls to	off (“0”)	position,	then remove	plug from outlet.
Never		operate	on	a	soft surface	such as	a bed or	couáh where	the air openings
may be blocked.

10. 11.

12. 13.

Do not	unplug	by pulling	on	cord. To	unplug,	grasp the plug,		not the cord.
Keep fingers		away from	all	moving	parts.	Special care is		required around the
sewing	machine needle.
Always	use the proper needle plate. The wrong						plate can cause the needle to break.
Do not	use bent or blunt		needles. Use needles				recommended by the manufacturer
only.

14. 15.

Do not		pull or push fabric while stitching. It may deflect the				needle causing		it to break.
Switch		the sewing machine off	(“Os) when	making	any	adjustments	in	the needle
area,	such as threading needle,		changing	needle,	threading bobbin,		or changing
presser foot, etc.

16.

Always unplug	sewing	machine from the electrical outlet when removing covers,
lubricating, or	when making		any	other user servicing adjustments mentioned	in
the instruction	manual.

17.

Hold plug winding.

when

rewinding into cord reel. Do not allow plug to whip when re

SAVE THESE INSTRUCTIONS

Contents

Controls of the			sewing			machine
Accessory		box
Electrical connection							light
Master switch			and		sewing
Foot control
Notes on safety					thread		spool		stand
How to	handle		the
Opening the looper cover							and	the		swivel-type
Threading		guide		wires		18	and	22
Threading		the	right looper								slide
Threading		the	left		looper / threading
Threading the			left		and	right needle
Needle	threader					threaded			machine
Thread	reel change on
Inserting the lint				box

work

support.

	Seam allowance
	Sewing test
	Points	to observe during sewing
	Thread	cutter
	Securing the seam			thread tensions
	Setting the		standard		corrections
	Possibilities		requiring	thread tension

3-thread overecige			seam				the
Engaging and		disengaging
Thread	tension adjustment						for
Thread	chart	stitch		length
Adjusting the
Adjusting the		differential				feed
Disengaging the upper knife
Adjusting the seam				width
Changing the		sewing			foot
Changing the		light		bulb

converter (Hobbylock			788) .
sewing with	1 needle		and 2 threads
(Hobbylock	788)	- .

Cleaning	the	thread	tensions

Rolled

hem

with

3

threads

Rolled

hem

with

2

threads

Changing the

needles

Changing

the

knives

knife

Changing

the

upper

knife

Changing

the

lower

Upper

knife

arresting

Cleaning the

knives

Oiling

the machine

Stitch

selection

table

removal

Sewing problems

and their

Accessories

net/thread

unreeling

disc

Thread spool

Mounting

of

the Converter

Special accessories

of the cardboard

box

Specifications /

contents

•

•

.

•	2.3

			.6
			.8
	•	.	10
•	. .		11
	•		11
•	. .		12
	•	.	12
	•	•	13
•	.		14
•		. .	14
•		-	14
•		. .	15
•		. .	16
•			17
• . .			18
			19
		21,22

26,27

32

42 43

1

(0

Controls

of

the

sewing

machine

1 2 3 4 5 6 7

	Thread		spool			stand
	Carrying			handle					dial
					thread tension
	Left needle
										dial
						thread		tension
	Right	needle
										dial
						thread		tension
	Right	looper
	Left looper				thread tension				dial
	Thread		tension				cover

	8
	9
1	0
11
1	2
1	3
14

	Lint box
	Handwheel			with	recess
	Looper	cover
	Upper	knife	work		support
	Swivel-type
	Needle	plate
	Sewing foot

1	5
1	6
1	7
18
1	9

20 21 22 23

	Needle	holder					lever
	Sewing	foot				lifting
						holder
	Thread spool
	Color-coded					thread guides
	Telescopic			thread			guide	bar
	Machine		socket
	Master	switch					(4x)
	Rear thread				guide
					feed adjustment
	Differential
					788)
	(Hobbylock

knob

24 25 26 27

	Accessory		box				knob
	Stitch	length		adjustment
							knob
	Seam	width		adjustment
	Rotary lever			for	upper	knife

disengagement

28 29 30 31

Foot control
Foot control
Mains	plug
Right	looper

plug

for

machine

socket

32 33 34 35 36 37

	Left looper
	Lower	knife				of lower			knife
	Retaining		screw
			screw			of upper			knife
	Retaining
								piece
	Thread spool				centering
	Upper	knife		arresting			screw

38 39 40

Lamp cover
Thread	cutter
Looper	threader

41 42 43

Converter
Needle	threader
Tweezers

29

Accessory	box
Swing open	work	support
out accessory box		24.

1

2

and

pull

The

accessory

box

can

only

be

inserted

in

its

compartment

when

held

as

shown

in

the

illustration

at

left.

The

guide of the

groove is box faces

up and the projection the machine.

Electrical

connection

Use this machine only on a flat or on a special machine table.

surface

Connecting

foot

control

28: Insert plug

29 of the control in	machine
Then connect mains	plug 30

socket to a

20.

power

source.

Caution: When the	machine is	not
use, always switch	it off at master
switch 21 and disconnect the		plug

in

from the power source. any objects on the foot

do not	place
control.

4

e3-O ————	I	How to handle the thread spool
		stand
		Pull thread spool stand 1 as far as it
		will go in the direction indicated by the
		arrow.

\	Fully extend telescopic thread guide
	bar 19. Slowly turn the two upper tele
—	scopic sections until you hear their
	detent balls snap in place.

After use fold up telescopic thread guide bar 19.

read spool stand (with or

machine.

6

___

1

	f1\
	—‘ ____
	— /	-
		-D
	/—	i’)
	‘-==			I
		A
	— /_____________		—

Opening

and

closing

looper

cover and

work

support

Push

looper

cover

10

fully

to

the

right,

hold

it,

and

swing

it

down.

To

close

the

looper

cover,

push

it

up

until

it

locks.

To

open work

support

12.

push

it

in

by the

arrow. To

the

direction

indicated

close the

work support,

push

it

lightly

until

it

locks.

Behind

the

looper

cover converter

41

(Hobbylock

788)

is

illustrated

with

its

slide

settings

for

the

respective

stitch

type.

On

the

inside

of

the

looper

cover

the

individual

threading paths

are

illustrated

in

colors.

lmportantl

While the

ooøer

cover

or

work

support

to the machine

is

s open, power supply

inrorrupted.

Threading of

guide

wires 18

and

19

Place thread

spools on

thread

spoo1

stands. The

machine

must be

threaded

correctly.

First

pull

the

threads

through

to

colors.

Then

lift

guides

18 according

carrying handle 2

and

place the

thread

in

rear

guides

22.

Set

the thread

tensi

ons at

N

and

thread

the machine

in

the

following

sequence:

1.

right looper

(yellowl

2.

left

looper

(redl

3.

right needle

(green)

4.

left

needle

(blue)

Push carrying

handle

2

down

again.

7

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	Threadng			the left		looper
	Thread		left	looper	32 (yellow			thread
	path)	in	sequence		1	to	6. From		thread
									looper
	guide	6	pull the thread				through
	eye 7.

/ z/__w__J

Align the		mark on	handwheel		9 with
the mark			.	Tauten the
		on the housing		in thread
thread	a	little and	place it
guide	B by means		of tweezers		43.

1

Thread guide	9	is	threaded
of looper threader			40.

by

means

1

2.

The mark on		handwheel	9		must be
aligned	with	the mark on		the		hou
sing.
Tauten	the thread a little.

3.

Push	the slide of the				looper		threader
fully	to the		left,	then	pull	lightly		on
the thread			and	allow the		slide to
return			. By this		means		the
		slowly				9.
thread		is placed in guide

Note:	slide	can		not
If the
on the hand			wheel

be moved the	marks
and the housing		are

not

correctly

aligned.

C

Threading the right needle

Threading of guide wires 18 and 22 is shown on page 7.

In the left-hand illustration the threa

ding path is	shown from green tension
1 up to right	needle eye 6. Thread the
needle from the front.

The use of needle threader 42 is desc ribed on the next page.

Threading the left needle

Threading of guide wires 18 and 22 is shown on page 7.

In the left-hand illustration the threa ding path is shown from blue tension 1 up to left needle eye 6. Thread the needle from the front.

The use of needle threader 42 is desc ribed on the next page.

10

	Needle threader
is	Lower the	sewing foot by means of lif
	ting lever	16.
	Turn the hand wheel until right looper
	31 is positioned		right of the needle
	(see top of page		18). Place the thread
	in slot A of needle threader 42 and
	tauten it a little, holding the needle
	threader a little turned to the front.
	With the needle located between the
	two guide lugs B move the needle
	threader slowly downwards at the rear
	side of the needle until small hook C
	engages in the needle eye.
	Hold the thread taut and place it in
	hook D; it will then automatically be
	placed in hook C,		too.

Pull the needle threader to the rear, out of the needle eye, and the thread will be pulled through the eye.

Pull the thread completey through the needle eye.

Thread spool change on threaded machine

Cut the threads close to the thread spool. Place new thread spools on spool holders 1 7. Tie the threads still in the machine and the new threads to-gether. Pull the needle threads out of the needles. Now pull at the thread ends until the knots are about 1 5 cm past the last thread guide before the needles. Cut the knots off and pull the threads through the respective needle eyes. The looper threads can be pulled until past the looper eyes without interruption. Pull about 10 cm of thread through the looper eye.

11

After threading the machine, push handle 2 down, and close work support 12 and looper cover 1 0.

Inserting the lint box:

Insert the two tabs of lint box 8 down wards in the recess of looper cover 10. Then push the bottom of the box against the machine.

For removal of the lint box, use the revese order.

Seam allowance

If the cutting is guided along below mark N on looper cover 10, a seam allowance of 16 mm must be taken into consideration when cutting the fabric.

12

Sewing test
After threading,	a	sewing test	should
be made.
Raise sewing foot		lever 16, as	shown
the illustration.

in

Hold

hand

the thread ends with your left while turning the hand wheel

with

your

right

hand

in

the

direction

indica

ted	by	the	arrow	on	the	wheel.

Hold	the	threads	taut	and	lay

them

back sure

under sewing foot	14.		Make
the threads interlock		correctly

during

sewing

(thread

chain).

Insert the test fabric	up	to
11 and lower sewing	foot

upper	knife
lever 1	6.

13