Pfaff hobbylock 2.5 User manual

Owner’s 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:
• 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 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.
• 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 finger 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 flatlock stitch................................................................22
Ornamental flatlock 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 fine 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 specifications.................................................31
Intellectual Property......................................................31

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Introduction
Parts of the machine
1. Telescopic thread stand
2. Handle
3. Left needle thread tension fine tuning lever (blue)
4. Right needle thread tension fine tuning lever (green)
5. Upper looper thread tension fine tuning lever (red)
6. Lower looper thread tension fine 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

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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 finger 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 difficult 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 finish. 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 finish.
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
ruffled edge is a perfect finish for bridal veils, figure 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 flat.) 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.
Specifications 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 fit in a polarized outlet only
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.

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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 flat 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 flat 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

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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 finger lever setting
The stitch finger lever should be set to N for all standard
overlock sewing. To sew rolled edge you need to retract
the stitch finger by setting the stitch finger lever to R.
When moving the stitch finger lever, be sure to push the
lever as far as it will go in each direction.