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Pfaff Symaskin Hobbylock 2.5

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O w n e r s M a n u a l
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, re,
electric shock, or injury to persons:
This sewing machine is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the sewing machine by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the sewing machine.
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 ngers 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 de ect the needle causing it to break.
Wear safety glasses.
Switch the sewing machine off (“0”) when making any adjustment in the needle area, such as threading
needle, changing needle, 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
Table of contents
Introduction
Parts of the machine ........................................................4
Accessories ...........................................................................5
Optional accessories from INSPIRA........................6
Preparations
Connecting the foot control
and the power supply ......................................................7
Setting up the spool stand ............................................7
Setting up the telescopic thread stand ....................7
Front cover ...........................................................................8
Open ........................................................................................................8
Close........................................................................................................8
Attaching the waste tray .................................................8
Presser foot lift ...................................................................8
Changing the presser foot .............................................8
Needle information ...........................................................9
Changing the needles ......................................................9
Movable upper cutter .....................................................9
Disengaging, position B ..................................................................9
Engaging, position A .........................................................................9
2-thread overlock converter ....................................... 10
Engaging .............................................................................................10
Disengaging ......................................................................................10
Stitch nger lever setting ............................................ 10
Threading
General threading information ................................. 11
Threading the upper looper (red) ............................ 12
Threading the lower looper (yellow) ....................... 13
Threading the right needle (green) ......................... 14
Threading the left needle (blue) ............................... 15
Needle threader .............................................................. 16
Changing thread ............................................................. 16
Stitches & Sewing techniques
Stitch overview ................................................................. 17
Start sewing ...................................................................... 21
Pin placement ..................................................................................21
Chain off .............................................................................................21
Flatlock sewing ................................................................ 22
Standard atlock stitch ................................................................22
Ornamental atlock stitch ...........................................................22
Ladder stitch .....................................................................................22
Rolled edge sewing ........................................................ 23
Sewing hints ..................................................................... 23
Pintuck sewing .................................................................................23
Sew in circles ....................................................................................23
Securing the thread chain ..........................................................23
Sewing with heavy decorative threads in the loopers .....23
Braiding by chaining off ..............................................................23
Stitch adjustments
Stitch width adjustment .............................................. 24
Width adjustment by changing needle position ................24
Width adjustment with the cutting width dial ....................24
Presser foot pressure adjustment ........................... 24
Stitch length adjustment ............................................. 24
Differential feed adjustment ...................................... 25
Gathered overlock (stretch, knit fabrics) ...............................25
Stretch overlock (lightweight fabrics) .....................................25
Thread tension ne tuning ......................................... 26
Maintenance
Machine maintenance .................................................. 28
Cleaning ..............................................................................................28
Oiling ....................................................................................................28
Replacing the movable upper cutter ......................................28
Changing the light bulb ...............................................................29
Storage ................................................................................ 29
Servicing ............................................................................. 29
Trouble shooting ............................................................. 30
Machine speci cations ................................................. 31
Intellectual Property ...................................................... 31
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9
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16
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10 11
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23
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25
Introduction
Parts of the machine
1. Telescopic thread stand
2. Handle
3. Left needle thread tension ne tuning lever (blue)
4. Right needle thread tension ne tuning lever (green)
5. Upper looper thread tension ne tuning lever (red)
6. Lower looper thread tension ne tuning lever (yellow)
7. Stitch plate
8. Flat bed extension
9. Front cover
10. Power & light switch
11. Foot control/electric power cord socket
12. Handwheel
13. Stitch length dial
14. Spool stand
15. Cone holder
16. Auto tension dial (ATD)
17. Spool pin
18. Presser foot pressure adjusting dial
19. Thread cutter
20. Presser foot lift
21. Hole for extension table (optional accessory, part
number 416384201)
22. Differential feed adjusting dial
23. Presser foot ankle
24. Presser foot
25. Cutting width dial
5
30
31
26
2827 29
2 3 4 5 6 7 8
911
1
10
12
13
Introduction
Accessories
Accessories are contained in the accessory box.
1. Accessory box
2. Screwdriver
3. Knife blade (for the movable upper cutter)
4. Thread unreeling discs (4)
5. Thread spool nets (4)
6. Oiler
7. Allen key
8. Tweezers
9. Cone holders (4)
10. Dust cover
11. Lint brush
12. Waste tray
13. Needle threader
14. Needle pack (not pictured) system ELx705 including
three needles, size #14/90 and two needles, size
#12/80. Two needles, size #14/90, are in the machine
on delivery.
26. Moveable upper cutter
27. Stitch nger lever
28. Stationary lower cutter
29. Lower looper
30. Upper looper
31. 2-thread converter
6 Introduction
Optional accessories from INSPIRA
Optional presser feet specially prepared for this machine are available at your PFAFF® dealer. The snap-on type
presser foot used on this machine allows easy removal and replacement.
Some fabrics have a lot of excess dye which can cause discoloration on other fabric but also
on your overlock machine. This discoloring may be very dif cult or impossible to remove.
Fleece and denim fabric, especially red and blue, often contain a lot of excess dye.
If you suspect that your fabric/ready-to-wear garment contains a lot of excess dye, always
pre-wash it before sewing to avoid the discoloring.
Elastic Foot 620 08 65-96
The Elastic Foot guides and stretches narrow elastic (¼-½”, 6-12mm) as you sew it to fabric. It
is great for sewing for active wear, lingerie and other elastic insertion techniques.
Blindhem & Lace Foot 620 08 69-96
The Blindhem Foot is perfect for sewing invisible hems and for applying lace. The hem is
sewn, overcast and trimmed in one step.
Beading Foot 620 08 66-96
The Beading Foot smoothly guides beads and pearls through a channel on the foot for easy
application on garments or crafts.
Piping Foot 620 08 67-96
The Piping Foot is perfect for inserting packaged piping into seams and on edges for a
tailored nish. The trim is sewn between the two layers of fabric in one step. A groove under
the foot helps guide the piping. You can also create your own piping for a custom nish.
The Piping Foot makes it fast and easy to cover cording with fabric and to insert piping into
seams for a professional look!
Taping Foot 620 08 68-96
The Taping Foot is used to apply seam tapes to seams to prevent stretching. It is especially
good for stabilizing shoulder seams. With this foot you can reinforce and construct seams in
one step.
Corded Wavy Edge Foot 620 09 72-96
Sewing a decorative wavy edge is easy with the Corded Wavy Edge Foot. The curvy, softly
ruf ed edge is a perfect nish for bridal veils, gure skating costumes, ballet skirts, crafts and
more.
Gathering Foot 620 08 83-96
The Gathering Foot is perfect for gathering a single layer of fabric or simultaneously
gathering and stitching two layers of fabric. (The bottom fabric layer will be gathered and the
top layer remains at.) Suitable for light and medium weight woven fabrics.
7
A
Preparations
Connecting the foot control and the
power supply
Foot control to use with this machine:
Type 4C-345B22 for USA/Canada
Type 4C-345G22 for Europe
Type 4C-345G25 for UK
Type 4C-345G23 for Australia
Before plugging your machine in, make sure the voltage
is the same as indicated on the plate under the machine.
Speci cations vary from country to country.
Connect the foot control/electric power cord to the
socket on the machine.
Plug the power cord plug into the electric outlet.
Push the power switch to “1” to turn on the machine.
Press the foot control to start sewing. Use the foot
control to adjust the sewing speed. The harder you
press, the faster the machine will sew.
On the right side of the foot control is a speed control
slide (A) for selecting full or half maximum speed. If
you press the foot control to the bottom, the machine
runs at the maximum speed set by the speed control
slide. To stop the machine from sewing, remove your
foot from the control.
Note: Your machine is adjusted to provide the best stitch result
at normal room temperature. Extreme hot and cold temperatures
can affect the sewn result.
Push the power switch to “0” to turn off the machine.
Note: When the front cover is open the safety switch is activated
and prevents the machine from sewing, even if the foot control is
pressed.
Setting up the spool stand
Insert the spool stand then push to right as illustrated.
Setting up the telescopic thread stand
Extend the telescopic thread stand to its full height, then
turn until it clicks into place. Place the thread spools over
the cone holders on the spool pin.
If the machine is already threaded, straighten the threads
to prevent tangling.
POLARIZED PLUG INFORMATION
(FOR U.S.A. & CANADA ONLY)
This appliance has a polarized plug (one blade wider
than the other). To reduce the risk of electric shock,
this plug is intended to t in a polarized outlet only
way. If the plug does not t fully in the outlet, reverse
the plug. If it still does not t, contact a quali ed
electrician to install the proper outlet. Do not modify
the plug in any way.
8
1
2
Preparations
Front cover
Open
First push the cover to the right as far as it will go and
then pull it downward toward you.
Close
First pull the cover upward and then slide it to the left
until it locks.
Note: The front cover has a safety switch and the machine will
not sew if the front cover is open.
Attaching the waste tray
Position the machine so the front is nearly aligned with
the edge of the table. Insert the U-shaped hooks of the
waste tray onto the two suction cups on the underside of
the machine. Make sure the trim falls into the bag while
sewing.
Presser foot lift
Raise the presser foot by lowering presser foot lift at the
back of the machine.
Pressing down on the presser foot lift puts the presser foot
in the extra lift position.
Changing the presser foot
Turn off the main power switch and unplug the machine.
Raise the presser foot.
Turn the handwheel toward you until the needles are
at the highest position.
Push the red button on the back of the presser foot
ankle to release the presser foot.
Raise the presser foot to the extra lift position and the
foot will come off.
Place the new foot with the pin right underneath the
groove of the ankle while in the extra lift position.
Lower the presser foot. Push the red button on the back
of the presser foot ankle and the foot will snap into
place.
9
A
B
B
A
B
B
A
B
Preparations
Needle information
This overlock uses a at shank industrial needle that
eliminates the possibility of inserting the needle backwards.
Do not attempt to use a standard household sewing machine
needle of any size or type in this overlock.
Use INSPIRA™ needle EL x 705 sizes 14/90 and 12/80,
supplied with this machine.
Changing the needles
Turn off the main power switch and unplug the machine.
Turn the handwheel toward you until the needles are at
the highest position.
Place a thick piece of fabric under the presser foot. Lower
the needles halfway into the fabric.
Loosen, but do not remove the needle clamp screw with
the allen key while you are holding the needles.
Note: When inserting needles into the A and/or B needle clamps it
is necessary to loosen the needle clamp screws for both A and B.
Remove the selected needle.
Hold the new needle with the at surface to the back.
Insert the needle into the needle clamp as far as it will go.
Note: We recommend using the hole in the needle threader to hold
the needle.
Securely tighten the needle clamp screw using the allen
key.
Note: Do not over-tighten the screw as this may cause the needle
clamp to be damaged.
Movable upper cutter
Disengaging, position B
Turn off the main power switch and unplug the machine.
Turn the handwheel toward you until the upper cutter is
raised to the highest position.
Open the front cover.
Pull the movable cutter knob to the right as far as it will
go.
Turn the knob toward you counter clockwise until the
cutter clicks into the locked position B.
Engaging, position A
Open the front cover and pull the movable cutter knob to
the right as far as it will go.
Turn the knob clockwise until the cutter clicks into the
cutting position A.
A. Overlock left needle
B. Overlock right needle
10
R
N
N
R
N
R
A
B
Preparations
2-thread overlock converter
Engaging
Turn off the main power switch and unplug the machine.
2-thread overlock stitches are sewn using one needle
thread and the lower looper thread. Before sewing, the
2-thread converter must be attached to the upper looper.
The 3-thread stretch overlock stitch is also sewn with the
2-thread overlock converter engaged.
Open the front cover.
Raise the white handle on the 2-thread converter to
insert the sharp edge (A) of the converter in the eye (B)
of the upper looper.
Disengaging
Turn off the main power switch and unplug the machine.
Lower the white handle on the converter and remove
the sharp edge (A) from the eye (B) of the upper looper.
Stitch nger lever setting
The stitch nger lever should be set to N for all standard
overlock sewing. To sew rolled edge you need to retract
the stitch nger by setting the stitch nger lever to R.
When moving the stitch nger lever, be sure to push the
lever as far as it will go in each direction.
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9
9
Threading
Threading the upper looper (red)
Raise the presser foot to release tension discs.
Pass the thread from back to front through the thread
guide on the thread stand (1).
Thread the top cover thread guide by pulling the
thread towards the right until it slips under the guide.
Then pull the thread along the right side of the button
as illustrated (2).
Lift up the handle and bring the thread under it. While
holding the thread with both hands, pass it between
the tension discs and pull it down to make certain it is
properly placed between the tension discs (3)
Thread the looper area of the machine following the
red color coded thread guides (4-9).
Use the tweezers to thread the hole in the upper looper
from front to back (9).
Pull about 10 cm (4”) of thread through the looper and
place it to the back of the stitch plate.
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10
B
A
C
Threading
Threading the lower looper (yellow)
Raise the presser foot to release tension discs.
Pass the thread from back to front through the thread
guide on the thread stand (1).
Thread the top cover thread guide by pulling the
thread towards the right until it slips under the guide.
Then pull the thread along the right side of the button
as illustrated (2).
Lift up the handle and bring the thread under it. While
holding the thread with both hands, pass it between
the tension discs and pull it down to make certain it is
properly placed between the tension discs (3).
Turn the handwheel toward you until the lower looper
extends out 10 mm (3/8”) from the needle plate edge.
Thread the looper area of the machine following the
yellow color coded thread guides (4-10).
To thread the last thread guide (9), pull about 10 cm
(4”) of thread through the guide (8).
Tip: Moving the stitch nger lever to R makes the threading
easier. Remember to set it back to N before starting to sew.
Thread the looper eye (A) from front to back using
the tweezers. Make sure the thread runs into the “V”
cutouts (B) on threader lever. Firmly hold the thread
tail with left hand and pull the threader lever (C) up
into place and back to snap the thread into thread
guide 9.
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1
2
3
1
Threading
Threading the right needle
(green, B on needle clamp)
Raise the presser foot to release tension discs.
Pass the thread from back to front through the thread
guide on the thread stand (1).
Thread the top cover thread guide by pulling the
thread towards the right until it slips under the guide.
Then pull the thread along the right side of the button
as illustrated (2).
Lift up the handle and bring the thread under it. While
holding the thread with both hands, pass it between
the tension discs and pull it down to make certain it is
properly placed between the tension discs (3).
Continue to thread points (4-8).
Slip the thread into the rear slot on the thread guide (5)
and into the slot on the take-up lever cover (6). Then
slip the thread into the right slot on the thread guides
(7) and (8).
Before threading the eye of the needle, make sure the
thread is behind the thread guide located on the bottom
of the needle clamp.
Thread the eye of the needle (9). Use the needle
threader (see page 16) to make needle eye threading
easier.
Pull about 10 cm (4”) of thread through needle eye to
hang free.
Place the thread to the back, under the presser foot.
15
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2
3
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4
5
6
7
8
9
9
Threading
Threading the left needle
(blue, A on needle clamp)
Raise the presser foot to release tension discs.
Pass the thread from back to front through the thread
guide on the thread stand (1).
Thread the top cover thread guide by pulling the
thread towards the right until it slips under the guide.
Then pull the thread along the right side of the button
as illustrated (2).
Lift up the handle and bring the thread under it. While
holding the thread with both hands, pass it between
the tension discs and pull it down to make certain it is
properly placed between the tension discs (3).
Continue to thread points (4-8).
Slip the thread into the middle slot on the thread guide
(5) and the slot on the take-up lever cover (6). Then slip
the thread into the middle slot on the thread guides (7)
and (8).
Before threading the eye of the needle, make sure the
thread is behind the thread guide located on the bottom
of the needle clamp.
Thread the eye of the needle (9). Use the needle
threader (see page 16) to make needle eye threading
easier.
Pull about 10 cm (4”) of thread through needle eye to
hang free.
Place the thread to the back, under the presser foot.
16 Threading
Needle threader
To make threading the needles easier, use the needle
threader included with the accessories.
Turn the handwheel so the needles are in their highest
position and lower the presser foot. Make sure one
of the rectangular markings of the needle threader is
pointing upwards. Place the thread from right to left in
the notch on the tip of the needle threader.
Hold the needle threader against the needle. Move
the needle threader down to the needle eye and press
gently against the needle, causing a small metal pin
to push the thread through the needle eye and form a
thread loop.
Use the needle threader to pull the thread loop out
behind the needle.
Changing thread
The following is an easy way to change threads:
Cut the thread in use near the spool, behind the guides
on the telescopic thread stand.
Remove the thread spool and place the new thread on
the spool pin.
Tie the end of the new thread to the end of the old
thread. Cut the thread tails to 2-3 cm (1”) in length and
rmly pull both threads to test knot security.
Raise the presser foot to release the tension discs.
Pull the threads through the machine one at a time
until the knots are in front of the needle. If the threads
do not pull easily, check for tangles on thread guides or
looping under thread stand.
Cut the thread behind the knot and thread the needle.
17Stitches & sewing techniques
Stitch ATD N/R A/B Threading path
B G R Y
A A and B 2.5 6.0 1.0 N No A • • • •
4-thread overlock
For all seams where stretch or give is needed, such as neck edges, side seams, sleeves, etc. Specialty techniques can be
done with a 4-thread overlock seam such as gathering, applying piping with the optional piping foot and elastic with
the optional elastic foot.
B A 2.5 6.0 1.0 N No A • •
3-thread overlock, wide
For sewing two layers of stretchy fabric or overcasting a single layer of light to medium fabric. Use heavier threads in
the loopers to create decorative braids. (Hold your hand behind the presser foot and gently and slowly pull the thread
chain as you sew, trying to keep the same tension as it has been sewn onto fabric.)
A B 2.5 6.0 1.0 N No A • • •
3-thread overlock, narrow
For sewing two layers of stretchy fabric or overcasting a single layer of light fabric. Popular for creating decorative
tucks. Use decorative threads in the loopers and regular thread in the needle. Use different colors in the loopers to get
an interesting effect.
Stitch overview
The settings shown in this table are our recommendations based on normal conditions. The correct tension is set
automatically by the use of the Auto Tension Dial (ATD). It may be necessary to adjust the thread tension according to
the stitch, type of fabric and thread you are using. For best results make tension adjustments in small steps of no greater
than half a number at a time. Always test sew on a sample of your fabric before sewing on your garnment.
Different stitches are obtained by combining the ATD with different needle positions, threading methods, and the use
of the 2-thread converter.
Icon explanation:
Needle position Cutting width N/R Stitch nger lever
setting A/B Setting for upper
cutter
Stitch length Differential feed 2-thread converter
18 Stitches & sewing techniques
Stitch ATD N/R A/B Threading path
B G R Y
A B 1.5 6.0 1.0 R No A • • •
3-thread narrow edge*
For edging lightweight fabrics. It gives a nice nish on silky scarves, pillow ruf es and napkins. Thread the upper
looper with a decorative thread, such as 40 weight rayon for a beautiful satin edge. Read more on page 23.
F A 2 6.0 1.0 N No A • •
3-thread atlock, wide
For sewing stretchy fabrics together with a decorative effect either with the atlock side or the ladder stitch side.
Create varying effects by threading the upper looper with decorative thread. Read more on page 22.
F B 2 6.0 1.0 N No A • • •
3-thread atlock, narrow
For sewing stretchy fabrics together with a decorative effect either with the atlock side or the ladder stitch side.
Create varying effects by threading the upper looper with decorative thread. Read more on page 22.
G A and B 2 6.0 1.0 N Yes A • •
3-thread stretch overlock
For sewing extra stretchy fabrics. Add additional stretch by using a stretchy type thread in the lower looper. Change
the thread tension accordingly.
* Not recommended for heavyweight woven fabrics or medium to heavyweight stretch fabrics.
19Stitches & sewing techniques
* Not recommended for heavyweight woven fabrics or medium to heavyweight stretch fabrics.
Stitch ATD N/R A/B Threading path
B G R Y
C B 1 6.0 1.0 R No A • • •
3-thread rolled edge*
For edging lightweight fabrics. It gives a nice nish on silky scarves, pillow ruf es and napkins. For a beautiful rolled
edge, thread the upper looper with decorative thread and the needle and lower looper with lightweight regular
thread. Read more on page 23.
E A 2 6.0 1.0 N Yes A • •
2-thread overlock, wide
For overcasting a single layer of light to medium weight fabrics. Converter required.
E B 2 6.0 1.0 N Yes A • •
2-thread overlock, narrow
For overcasting a single layer of light to medium weight fabrics. Converter required.
E B 2 6.0 1.0 R Yes A • •
2-thread narrow edge*
Use for edging lightweight fabrics. Converter required. Read more on page 23.
20 Stitches & sewing techniques
Stitch ATD N/R A/B Threading path
B G R Y
E A 2 6.0 1.0 N Yes A • •
2-thread atlock, wide
For sewing stretchy fabrics together with a decorative effect either with the atlock side or the ladder stitch side.
Create varying effects by threading the lower looper with decorative thread. Converter required. Read more on page
23.
G A 2 6.0 1.0 N Yes A • •
2-thread wrapped overlock, wide
Decorative nish for garments and homedec. Converter required.
D B 2 6.0 1.0 N Yes A • •
2-thread wrapped overlock, narrow
Gives a beautiful nish to lightweight fabrics. Use transparent threads with this stitch to get an almost invisible edge,
this gives a very beautiful look on ner fabrics. Converter required.
B B 1 6.0 1.0 R Yes A • •
2-thread rolled edge*
For edging lightweight fabrics. It gives a nice nish on silky scarves, pillow ruf es and napkins. Thread the lower
looper with a decorative thread, such as 40 weight rayon for a beautiful satin edge. Converter required. Read more on
page 23.
* Not recommended for heavyweight woven fabrics or medium to heavyweight stretch fabrics.
21
5-8 cm
(2-3“)
Stitches & sewing techniques
Start sewing
Pin placement
When securing the fabric pieces using pins, insert straight
pins to the left of the presser foot. The pins will be easy to
remove and are away from the cutters.
Sewing over pins will damage and might destroy the
cutting edge of the cutters.
When the machine is completely threaded, close the
front cover and bring all of the threads over the stitch
plate and slightly to the left under the presser foot.
Ensure that the upper blade moves against the lower
blade correctly by turning the handwheel slowly
toward you. If the blades are not moving correctly,
check if there are any fabric or waste thread stuck
between the blades.
Hold the threads and pull them slightly.
Turn the handwheel toward you two to three complete
turns to start making a thread chain. Check if all
threads wind around the stitch nger of the stitch plate.
If the threads do not wind around the nger, make sure
each thread is threaded correctly.
Continue holding the thread chain while pressing the
foot control. Sew until the chain is 5-8 cm (2-3”) in
length.
Place fabric under the front of the presser foot and sew
a test sample. Guide the fabric slightly with your left
hand while sewing. Do not pull on the fabric as this
may de ect the needle, causing it to break.
Chain off
When you reach the end of the fabric, continue sewing
while drawing the nished fabric gently backwards
and to the left. This is called chaining off. It prevents
the threads from coming undone and prepares for the
next sewing task.
Cut off the thread chain 2-5 cm (1-2”) behind the
presser foot using the thread cutter on the left side of
the machine. Pull the threads around the thread cutter
from the back, then toward you.
Tip: When you have re-threaded the machine, always chain off
and test sew a sample to test thread tension.
Tip: The presser foot on this machine has marks to indicate the
needle position. Use this as a guide when sewing.
23
A
B
Stitches & sewing techniques
Rolled edge sewing
The rolled edge stitch is appropriate for lightweight fabrics such as lawn, voil, organdy, crepe, etc. The rolled edge is
achieved by adjusting the thread tension to make the fabric edge roll under the fabric while overlocking. Adjust the
thread tension to change the degree of rolling. To sew a rolled edge you need to set the stitch nger lever to R. (See
page 10)
Tip: For a beautiful rolled edge, thread the upper looper with a decorative thread and the needle and lower looper with lightweight
regular thread.
Note: Make a thread chain and test sew on a sample of your fabric before sewing on your garment. Hold the thread chain before
sewing to keep it from curling into the seam.
Note: The minimum overlock stitch width that can be obtained for rolled edging is approximately 1.5 mm.
Sewing hints
Pintuck sewing
Sew decorative pintucks on the fabric before cutting out
the garment. Use overlock right needle and set the ATD
to A for a 3-thread overlock, narrow.
Note: The rolled edge stitch can also be used for this technique.
Disengage the movable upper cutter. (See page 9)
Mark the fabric with the desired number of pintucks
using a water-soluble fabric marker.
Fold the fabric with the wrong sides together and sew.
Press the pintucks in the same direction.
Sew in circles
(only suitable for heavy and medium weight fabrics)
The extension table (optional accessory, part number
416384201) has 13 holes in it, used to sew in circles.
Sew circles with the movable upper cutter engaged (A
position, see page 9) to get a beautiful edge, or disengage
the movable upper cutter (B position, see page 9) and sew
circle embellishments.
Mark a dot in the center of the area that will be the
circle and place stabilizer under the fabric.
Pierce the fabric at the mark with the sharp end of the
push pin (A). Place the pin into the selected
hole on the extension table. Push the pin
and its bottom plate (B) together.
Lower the presser foot and sew. The fabric
will feed in a circle around the push pin.
When the circle is complete, overlap the
seam for a few centimetres (an inch). Thread the
threads into a large eyed, hand sewing needle and pull
them to the wrong side of the fabric and secure.
Securing the thread chain
Thread the chain into a large eyed, hand sewing needle.
Insert the needle into the end of the seam and pull the
chain into the seam to secure the threads.
Sewing with heavy decorative threads in the
loopers
Heavy decorative threads need less thread tension than
regular threads to give the best sewing result. When
threading a heavy decorative thread, place the thread
through the hole in the top cover looper thread guide
and let it pass above the guide as illustrated below. Then
continue threading as described in the threading section.
Note: When using
decorative threads, place
the thread unreeling
disc as shown to
prevent the thread from
getting caught on the
edge of the spool.
Braiding by chaining off
1. Disengage the movable upper cutter. (See page 9)
2. Insert ller cord such as yarn or twill tape through the
hole in the front of the foot.
3. Position the ller cord under the foot and chain off the
desired length.
4. Chained off braids can be used individually or woven
into 3 or 4 ply braids.
24
6 mm 4 mm
Stitch adjustments
Stitch width adjustment
The stitch width can be increased or decreased by
changing the needle position or with the cutting width
dial.
Width adjustment by changing needle position
A) When only the left needle, or when both needles are
used the stitch width is 6 mm.
B) When only the right needle is used the stitch width is
4 mm.
Width adjustment with the cutting width dial
By ne tuning the cutting width using the cutting width
dial further adjustments are possible within the range
shown below.
When only the left needle is used: 5 - 7 mm
When only the right needle is used: 3 - 5 mm
Turn the dial to adjust the desired seam width. For
standard setting the dial should be set to 6.0.
Presser foot pressure adjustment
The presser foot pressure for sewing based on normal
conditions should be set to 2.5. Adjustments in some
instances may be necessary. Increase or decrease the
pressure until you are satis ed with the result. Always
test sew on a sample of your fabric before sewing on your
garment.
Less pressure: Decrease the pressure by turning the
adjustment dial in counter-clockwise direction to a value
between 2.5 and 1.
More pressure: Increase the pressure by turning the
adjustment dial in clockwise direction to a value between
2.5 and 5.
Back to standard setting: Turn the adjustment dial until
the mark on the knob is set to 2.5.
Stitch length adjustment
The stitch length dial should be set to 2.5 for most sewing
conditions.
Adjust the stitch length to 4 mm when sewing on
heavyweight fabrics.
Adjust the stitch length to 2 mm when sewing on
lightweight fabrics.
A) Left needle B) Right needle
25Stitch adjustments
Fabric Differential feed 1.0 Adjustment Result
Stretch fabric
(Knit, jersey)
1.0 - 2.0
Non-stretch fabric
(Chino, denim)
1.0
Lightweight fabric
(Silk, silky knit-
wear)
0.6 - 1.0
Differential feed adjustment
The differential feed system consists of two sets of feed
teeth arranged one behind the other. Both feed teeth work
independently of each other to give perfect results when
sewing on speciality fabrics. When the amount of feed by
the front feed teeth is changed in relation to the feed by
the rear feed teeth it will “stretch” or “gather” the fabric.
Use the differential feed to prevent stretching of knit
fabrics and puckering of lightweight fabrics.
For overlock stitching on normal fabric, set the
differential feed adjusting dial to 1.0.
Gathered overlock (stretch, knit fabrics)
When overedging stretch fabric, such as knits and jersey,
adjust the differential feed to a value between 1.0 and 2.0.
The setting depends on the material being sewn as well as
the desired amount of gathering. Test sew with different
settings before sewing on your garment.
Stretch overlock (lightweight fabrics)
When overedging light woven or loosely knit fabrics, such as silk and silky knitwear, adjust the differential feed to a
value between 0.6 and 1.0. When sewing, apply gentle tension to the fabric by holding the seam lightly in front and
back of the presser foot. The setting depends on the material being sewn as well as the desired amount of stretching.
Test sew with different settings before sewing on your garment.
26 Stitch adjustments
Thread tension ne tuning
Thread tension is automatically set when selecting a stitch type with the Auto Tension Dial (ATD), but it may have to
be ne tuned with the ne tuning levers depending on:
Type and thickness of the fabric
Needle size
Size, type and bre content of the thread
2-thread overlock
When the lower looper thread lies on the underside of the
fabric
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the needle thread tension ne tuning lever (blue
or green) toward a lower position.
When the needle thread tension is too loose Move the needle thread tension ne tuning lever (blue or
green) toward a higher position.
Or, move the lower looper thread tension ne tuning lever
(yellow) toward a lower position.
2-thread overlock, wrap
When the lower looper thread tension is too tight or needle
thread tension is too loose
Move the lower looper thread tension ne tuning lever
(yellow) toward a lower position.
Or, move the needle thread tension ne tuning lever (blue
or green) toward a higher position.
When the lower looper thread tension is too loose Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
3-thread atlock stitch
When the lower looper thread tension is too loose Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the needle thread tension ne tuning lever (blue
or green) toward a lower position.
When the upper looper thread tension is too loose Move the upper looper thread tension ne tuning lever
(red) toward a higher position.
Or, move the needle thread tension ne tuning lever (blue
or green) toward a lower position.
When the needle thread tension is too loose Move the needle thread tension ne tuning lever (blue or
green) toward a higher position.
Or, move the upper looper thread tension ne tuning lever
(red) toward a lower position.
27Stitch adjustments
3-thread overlock
When the upper looper thread lies on the underside of the
fabric
Move the upper looper thread tension ne tuning lever
(red) to a higher position.
Or, move the lower looper thread tension ne tuning lever
(yellow) to a lower position.
When the lower looper thread appears on the top of the
fabric
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the upper looper thread tension ne tuning lever
(red) to a lower position.
When the needle thread is too loose Move the needle tension ne tuning lever (blue or green) to
a higher position.
4-thread overlock
When the upper looper thread lies on the underside of the
fabric
Move the upper looper thread tension lever (red) toward a
higher position.
Or, move lower looper thread tension ne tuning lever
(yellow) toward a lower position.
When the lower looper thread appears on the top of the
fabric
Move the lower looper thread tension ne tuning lever
(yellow) toward a higher position.
Or, move the upper looper thread tension ne tuning lever
(red) toward a lower position.
When the left needle thread tension is too loose Move the needle thread tension ne tuning lever (blue)
toward a higher position.
When the right needle thread tension is too loose Move the right needle thread tension ne tuning lever
(green) toward a higher position.


Produktspecifikationer

Varumärke: Pfaff
Kategori: Symaskin
Modell: Hobbylock 2.5

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