Pfaff hobbylock 4764 Operating Manual
4764
hobbylock
Operating Manual
This household sewing machine is designed to comply with IEC/EN 60335-2-28 and UL1594
IMPORTANT SAFETY INSTRUCTIONS
When using an electrical appliance, basic safety precautions should always be followed,
including the following:
Read all instructions before using this household sewing machine.
DANGER - To reduce the risk of electric shock:
• A sewing machine should never be left unattended when plugged in. Always unplug this
sewing machine from the electric outlet immediately after using and before cleaning.
• Always unplug before relamping. Replace bulb with same type rated 15 Watt.
WARNING - To reduce the risk of burns, fire, electric
shock, or injury to persons:
• Do not allow to be used as a toy. Close attention is necessary when this sewing machine is
used by or near children and infirm persons.
• 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 sewing
machine to the nearest authorized dealer or service center for examination, repair, electrical
or mechanical adjustment.
• Never operate the sewing machine with any air openings blocked. Keep ventilation
openings of the sewing machine and foot controller free from the accumulation of lint,
dust, and loose cloth.
• Keep fingers away from all moving parts. Special care is required around the sewing
machine needle and blades.
• Always use the proper needle plate. The wrong plate can cause the needle to break.
• Do not use bent needles.
• Do not pull or push fabric while stitching. It may deflect the needle causing it to break.
• Switch the sewing machine off (“0”) when making any adjustment in the needle area, such
as threading needle, changing needle, threading bobbin, or changing presser foot, etc.
• 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.
• Never drop or insert any object into any opening.
• Do not use outdoors.
• Do not operate where aerosol (spray) products are being used or where oxygen is being
administrated.
• To disconnect, turn all controls to the off (“0”) position, then remove plug from outlet.
• Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
SAVE THESE INSTRUCTIONS
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Table of contents
Summary ............................................................................................4
1-1 Parts of hobbylock 4764 ................................................................................... 4
1-2 Accessories ........................................................................................................ 5
1-3 Connecting the foot control and the electrical connection ......................... 6
1-4 Setting telescopic thread stand ....................................................................... 7
1-5 Opening and closing front cover and side cover ........................................... 7
1-6 Changing the needle ....................................................................................... 8
1-7 Changing the presser foot ............................................................................... 8
Threading ..........................................................................................8
2-1 Threading ......................................................................................................... 8
2-2 Changing thread ............................................................................................ 10
2-3 Test sewing ..................................................................................................... 12
Sewing .............................................................................................12
3-1 4-thread overlock stitch using 2 needles ....................................................... 12
Before sewing ................................................................................................ 12
Presser foot lift ............................................................................................... 12
Beginning and end of sewing ....................................................................... 13
Presser foot pressure adjustment .................................................................. 14
Thread tension adjustment ........................................................................... 14
Differential feed adjustment ......................................................................... 16
Stitch width adjustment ................................................................................ 17
Stitch length adjustment ............................................................................... 17
Sewing curved seams ..................................................................................... 18
3-2 Setting waste tray .......................................................................................... 18
3-3 3-thread overlock stitch using 1 needle ........................................................ 18
3-4 2-thread overlock stitch using 1 needle ........................................................ 19
Conversion to 2-thread overlock ................................................................... 20
Stitch selection table ...................................................................................... 20
Thread tension adjustment ........................................................................... 21
3-5 How to roll hem ............................................................................................. 22
3-thread rolled hem ....................................................................................... 22
2-thread rolled hem ....................................................................................... 23
3-6 Corded overlock ............................................................................................. 24
Maintenance ....................................................................................25
4-1 Replacing the blades ...................................................................................... 25
4-2 Changing the light bulb ................................................................................ 26
4-3 Oiling .............................................................................................................. 26
4-4 Cleaning .......................................................................................................... 27
4-5 Storage ........................................................................................................... 27
4-6 Servicing ......................................................................................................... 27
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Sewing problems and their solutions ...........................................28
Table of sewing fabrics, needles and machine settings ...............29
Specifications ..................................................................................30
Index ................................................................................................31
Congratulations!
Congratulations on purchasing
your new Pfaff® hobbylock™
4764! Your Pfaff hobbylock 4764
will give you professional sewing
results! Its ease of use will free
your creative energies - turning
your ideas into reality will be a
joy.
Before you start, please spend
some time reading these
operating instructions. You will
soon discover how easy it is to use
your Pfaff hobbylock 4764.
Give a free rein to your
imagination and make your ideas
become reality!
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1. Summary
1-1 Parts of hobbylock 4764
1 Spool pin
2 Presser foot lift
3 Thread take up lever
4 Adjustment knob for presser foot
pressure
5 Thread guides
6 Telescopic thread guide
7-1 Left needle thread tension
7-2 Right needle thread tension
7-3 Thread tension/upper looper
7-4 Thread tension/lower looper
8 Front panel
9 Swivel table
10 Seam length adjustment knob
11 Standard presser foot
12 Seam width adjustment knob
13 Upper blade
14 Front cover
15 Handwheel
(right side of the machine)
16 Differential feed dial
17 Light bulb cover
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1-2 Accessories
1 Thread unreeling discs (4 pcs.)
2 Tweezers
3 Machine oil
4 Lower blade
5 Needles # 11 (75)
6 Needles # 14 (90)
7 Screwdrivers
8 Convertor
9 Thread nets
10 Cleaning brush
11 Needle plate for rolled hem
12 Accessory box
13 Waste tray
14 Machine cover
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1-3 Connecting the foot control
and the electrical connection
Connect the foot control and the electrical
connection.
Before plugging your machine, be sure that
the voltage is same as that of your machine.
(indicated on the plate on the back of the
machine).
Note: Specifications vary from country to
country.
Turn on the power and light switch.
Always turn off the switch and unplug the
machine when not in use; changing needles,
presser foot, or needle plate; or servicing/
cleaning the machine.
The harder you press the foot control, the
faster the machine runs.
When the power switch is turned off, the
machine will not operate even with pressure
on the foot control.
• Electronic foot control
(for USA/Canada only)
This foot control gives full penetration power
even at slow speed for all sewing needs.
For the USA and Canada
This sewing machine has a polarized
plug (one blade wider than the other).
To reduce the risk of electric shock, this
plug is intended to fit in a polarized
outlet only one way. If the plug does not
fit fully in the outlet, reverse the plug.
If it still does not fit, contact a qualified
electrician to install the proper outlet.
Do not modify the plug in any way.
• Use foot control type YC-482T for USA/
Canada and YC-190 for other countries with
overlock machine Model 4764.
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1-4 Setting telescopic thread stand
Extend the telescopic thread stand to its full
height, then turn until it locks against the
stop.
How to open the side cover
Push the cover to the left to unlock and
swing the cover back away from you.
How to close the side cover
Push the cover to the right and lock into
place.
1-5 Opening and closing front
cover and side cover
How to open the front cover
Push the cover to the right as far as it will go
and pull it downwards.
How to close the front cover
Pull the cover upwards and slide to the left
until it locks.
The front cover has a safety switch and the
machine will not sew when the front cover is
not closed all the way.
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2. Threading
2-1 Threading
When threading the machine from the
beginning, threading must be carried out in
the following sequence:
First: Upper looper threading (A)
Second: Lower looper threading (B)
Finally: Needle threading (C, D)
1-6 Changing the needle
Replace the needles in the following order:
Unplug the machine.
1. Bring needles to its highest position by
turning the handwheel towards you.
2. Loosen the needle clamp screw and
remove two needles together.
3. With the flat side away from you, insert two
new needles all the way up into the groove of
the needle bar.
Use standard home sewing machine needles
size #11 (#75) or #14(#90).
1-7 Changing presser foot
Turn the machine off.
1. Raise the presser foot.
2. Raise the needles to its highest position by
turning the handwheel towards you.
3. Push the red button and the foot will come
off.
4. Place the new foot with the pin right
underneath the groove of the ankle and lower
the presser foot. The foot will snap back into
place.
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(A)
(B)
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(D)
(C)
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1. Upper looper threading (A)
Bring the upper looper to its lowest position
by turning the handwheel towards you.
Draw thread from spool and pass it through
guide (1) of the thread stand and then, in
order, through guides (2)-(8) (Fig. A).
Thread the eye of upper looper (9) using
tweezers. Cut the thread leaving about 10 cm
(4”) of thread tail.
2. Lower looper threading (B)
Open the front cover and the side cover.
Take the thread drawn from the spool and
pass it through guide (1) of the thread stand
and then, in order, through guide (2) and
thread tension dial (3) (Fig. A).
Pass the thread through guides (4)-(8).
Bring the lower looper to the far left position
by turning the handwheel towards you, and
pass the thread through lower looper thread
guide (9). Pass thread through lower looper
slit (10) from back to forward (Fig. B).
Move the lower looper slightly to the right by
turning the handwheel towards you.
Then thread the eye of lower looper (11)
using tweezers.
Cut the thread leaving about 10 cm (4”) of
thread tail.
The lower looper thread will lay on top of the
upper looper thread.
Close the front cover.
Fig. B
Fig. A
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