SINGER 20U83B Instruction manual

INSTRUCTION MANUAL
FOR
SINGER
MACHINES
20U 73
73B
83
83B
THE SINGER COMPANY
Contents
1. Application RR reee core 1
2. Notes on safety .................eecrererrrerrereree rre ere erre. 1
3. Commissionsing ...............50errecerrerrererer tierra rre reerter ee 1
4. Installing the belt guard .................0..0000000000rreerr reee ere 2
5, Lubrication ..........-..eoe.eeceorecoa0000 re Re ee ere rece e ree rre rerer 2
6. Needle and thread ..............e..ee.esereerrerecoc00 00 RR RRA 3
7. Inserting the needle ....................e0000r00rreci rre ea aa eee eee 4
8. Toremove the bobbin case ............e...vesvrrrriiiere0i eric rice RR RR ID 4
9. Towind the bobbin ..................eere0ríevreeseseoreri ri rr e eee er 00 4
10. Threading the bobbin case .............e...00sre0eceorro ríe ee RR RD 5
11. Toreplace the bobbin Case... cco A 5
12. Threadingtheneedle. ........ooiii iii iii RIA 6
13. Toadjuststitchlength..........oo iii rr ID Cee 6
14. To adjust presser foot pressure ...................eeeerrrreeree correr eee RA 6
15. To adjust needie thread tension ..............00000 00e e ea aa era en aa aa es ee ne RIA 7
16. Regulating the take-up spring ............._.e..eoresresrrererriece rr rerer er eee. 7
17. To adjust bobbin thread tension... iii aa area ae eee ea eee 00e 7
18. Needle position SEIECIOr. «ovo ii RD 7
19. Stitch width regulator RR A 8
20. How to control the width of zigzag stitch ....................000000rescerrirr er RA 8
21. Needle bar frame clamping device. ...... ooo KK annee 8
22. Fittings for straight and zigzag stitcing. ... ooo eo oon A 9
23. Changing the throat plate and feed dog... ses eee cases aa e na nee 9
24. Toamountthread unwinder ............ooiiiiii eee ne eee 9
25. To use the spool cap +. vv KK ee ee ea ea ae a ae nav 10
26. To use the anti-spill sleeve 0000040 a eee era eee A 10
27. Kneelifter.......... eee ee 10
To mMOUNt KNEE TET. «ttt ee ee ee 0 ee ee ee 00 10
Knee operating presserfoot lift... EEK ево вонооное 10
Knee operating for stitch width control. ...................000000 000000 11
28. Fitting for buttanhole stitching (20U73/73B/83/83B) .............0e.000rrereeceerre. 12
29. Fitting for hem sewing (20U73/73B/83/83B)................. TO 12
30. Fitting for zipper and cord sewing (20U73/73B/83/83B)..............eeesesreerereree 12
31. Caringforyourmaching ....... cco eee ea ae ee aa eee 12
32. Troubleshootingchart...................... PT 13
33. Specifications ........... ee 14
1.APPLICATION
This SINGER Artisan Zigzag Machine is for;
-Zigzag and ornamental stitching in a variety of width
and stitch length.
-Perfect straight stitching.
-Superfine control of stitch length insures perfect
satin stitching.
Model 20U73/73B(9mm Bight)
20U83/83B(12mm Bight)
This machine is manufactured for atrisan zigzag sewing
and is suited for sewing light weight and medium
weight materials.
2.NOTES ON SAFETY
The machine must only be commissioned in full
knowledge of the instruction manual and operated by
persons with appropriate training.
Before putting into service, also read the safety notes
and the instruction manual of the motor supplier.
The machine must be used only for the purpose
intended. Use of the machine without the safety
devices belonging to it is not permitted.
When gauge parts are exchanged (e.g.needle,presser
foot, needle plate, feed dog and bobbin),during
threading, when the workplace is left unattended, and
during service work, the machine must be isolated
from the mains by switchingoff the main switch of
disconnecting the main plug.
On mechanically operated clutch motors without start
inhibitor, it is necessary to wait until the motor has
stopped.
General servicing work must be carried ou only by
appropriately trained persons.
Repairs, conversion and special maintenance work
must only be carried out by technicians or persons with
appropriate training.
For service or repair work on pneumatic systems, the
machine must be isolated from the compressed air
supply system. Exceptions to this are only
adjustments and function checks made by
appropriately trained technicians.
Work on the electrical equipment must be carried out
only by electricians or appropriately trained persons.
Work on parts and systems under electric current is not
permitted, except as spectified in regulations EN50110.
Conversions or changes to the machine must be made
only on adherence to all safety regulations.
For repairs, only replacement parts approved by us
must be used.
Commissioning of the sewing head is prohibited until
such time as the entire sewing unit is found to comply
with EC regulations.
Meanings of the symbols:
Danger spot!
Items requiring special attention
Danger of injury to operative or
service staff.
Be sure to observe and adhere to
these safety notes!
Earth
A
A
3.COMMISSIONING
To avoid disturbances or damages, it is
absolutely necessary to observe the
following instructions:
Before you put the machine into operation for the first
time, clean it throughly and oil it well (see page 2).
Have the mechanic check whether the motor can be
used with existing mains voltage or not, and that
junction box is correctly connected. Do not start the
machine if the voltage is not correct!
When the machine runs, the balance wheel must rotate
toward the operator. If it does not, have the electrician
change the wires on the motor.
4.INSTALLING THE BELT GUARD
Switch off the machine.
Set sewing head upright again
useing both hands.
Danger of crushing between sewing
head and table top.
Do notrun machine without belt
guard! Danger of accidents!
Above table surface
Align the belt guard so that hand wheel and V-belt move
freely, then screw it down is this position (see Fig.1).
Below table surface
Install belt guard so that motor pulley and V-belt will rotate
freely without interference.
5.LUBRICATION
Fig.2.
A
oil pad à à
e 9
в
0 4
since - Y
0 Grease Fig.3.
/N CAUTION
Switch offthe machine.
Set sewing head upright again using
both hands.
Danger of cruching between sewing
head and table top.
Ö -Rotating hook and area under throat plate.
Turn hand wheel over toward you until oil hole in rotating
hook appearin sight.
Apply one or two drops of oil to the oil hole (see Fig.2)
Loosen and remove screws and remove face plate by
sliding it downward.
Remove screws and lift off arm top cover.
Clean and oil the places indicated.
Apply sufficient oil to all oil felt shown in Fig.3
Apply a small amount of grease to gear teeth indicated
with word ‘Grease’ in Fig.3.
Also apply a drop of oil to all other oiling points shown with
marks 0
Keep oil pad (A) under arm top cover saturated with oil.
CHOICE OF OIL
(1) For (20U73/73B/83/83B) machines
Only use oil with a viscosity of 45.0 mm*/sec.at 38 °C
and a density of 0.888 g/cm? at 15 °C .
We recommend SINGER B-oil.
6.NEEDLE AND THREAD
Selection of the proper needle depends not only on the machine model, but also on the material and thread used. For
selection of proper needle and thread sizes to be used on the various machine models please refer to the table below.
Model 73,73B,83, 83B
For For
For light- medium- | -
Application = aht песне
Wei
of class J Weld savy
| materials materials weight
materials
Max.thread size(Nm)-
120 60 30
Synsthetic*
Needle size
| 10 12-16 18-19
(1/100mm)
( 80-100 ) (110-120)
Needle catalog 1910-05
(Needle system) ( 135x9)
*or an equivalent size of other types of thread
7.INSERTING THE NEEDLE
Switch off the machine.
Do not operate without finger guard.
(2) (See Fig.4)
Danger of injury !
Use needle cat. No. 1910-05 needle system (135X9)
only.
Raise needle bar to its highest position by turning hand
wheel toward you.
Loosen needle set screw (1) (See Fig.4) Insert the needle
in the needle bar and push it up as far as it will go.
Make sure its long groove faces toward the front. Tighten
needle set screw (1) securely.
8.TO REMOVE THE BOBBIN CASE
Switch off the machine.
Do not operate machine with throat
plate left open.
1.Open bed slide.
2.Raise latch (1) (see Fig.5).
3.Lift out bobbin case (2) (see Fig.5).
9.TO WIND THE BOBBIN
Fig.6.
Fig.7.
A /\ CAUTION
Do not guide or hold thread when
winding the bobbin.
1.Stop motion of needle by loosening stop-motion screw
(1), Fig.6. Hold hand wheel with left hand and turn stop-
motion screw toward you with right hand.
2.Place bobbin on bobbin winder spindle (3), Fig.7,
pushing it on as far as it will go.
Pre-tension (1) (see Fig.7).
+...... More tension.
2000 Less tension.
3.Push latch (2) in the direction indicated by arrow (A),
then start the machine (see Fig.7).
Bobbin winder spindie (3), rotate in the direction
indicated by arrow (B) (see Fig.7).
To adjust the amount of thread on bobbin, loosen
screw (4) on latch (2) and swing the latch (2) away from
you or toward you, as required.
For more thread on bobbin, swing latch (2) away from
you.
For less thread on bobbin, swing latch (2) toward you.
If thread winds unevenly on bobbin, loosen screw (5)
and move pre-tension (1) up or down, as required , and
tighten screw (5).
10.THREADING THE BOBBIN CASE. -
Fig.9.
Fig.10.
Fig.11.
1.Hold bobbin case so that thread unwinds in the
direction shown in Fig.8, and put bobbin in bobbin
case.
2.Pull thread into notch (1), and draw it under tension
spring (2) (see Fig.9).
3.Draw thread out from slot(2) on end of spring (1),
(Fig.10) and pass it through bobbin case thread guide
(1),Fig.11. Allow about 4 inches of thread to hang
freely from bobbin.
NOTE: When straight stitching, a better result can be
obtained if bobbin thread is not threaded
through bobbin case thread guide (1),Fig.11.
11.TO REPLACE THE BOBBIN CASE.
/\ CAUTION
Switch off the machine.
Do not run machine without closing
bed slide. Danger of injury!
Hold bobbin case by latch (1) and place it on spindle of
bobbin case holder (2) so that position finger (3) enters
notch (4) at right of bobbin case holder (see Fig.12).
Release latch and press bobbin case firmly in place to
assure proper position. Close bed slide.
12.THREADING THE NEEDLE 13.TO ADJUST STITCH LENGTH
Ir NES
iy, \
" QU
e
ao
Fig.17.
Regulating the stitch length:
To regulate the stitch length, tum feed regulating dial (1)
Fig.17, toward left or right as required.
+...... 10 lengthen
-......10 shorten
Changing to reverse feed:
Push lever (2),Fig.17.down for reverse feed and release
for forward feed.
To regulate the reverse stitch length, tum thumb screw
(3)Fig.17, toward left or right as required.
+...... To lengthen
-......10 shorten
14.TO ADJUST PRESSER FOOT PRESSURE
Switch off the machine.
Do not operate without thread take-
up guard. |
Do not operate without finger guar
Danger of injury!
1.Lead thread from the thread unwinder through all the Fig.18.
threading points A (Fig,14),B (Fig.15), C (Fig.13),
D (Fig.13),E (Fig.13) and F (Fig.16) in the order shown. To regulate the presser foot pressure, turn knurled
2.Thread the needle from front to back, as shown in thumb screw (1), Fig.18, toward left ro right as required.
Fig.16. +......More pressure
3.Draw about 3 inches of thread through eye of needle. -......Less pressure
. 6.
15.TO ADJUST NEEDLE THREAD TENSION
Fig.19.
Regulate needle thread tension withn tension regulating
knob (1), Fig.19.
+......More tension
-......Less tension
16.REGULATING THE TAKE-UP SPRING
Fig.20.
Using a screwdriver in slot of stud (1), Fig.20, regulate take-
up spring tension by turning stud (1), as required.
+......More tension
-......Less tension
To adjust the amount of take-up spring movement, loosen
screw (2), Fig.20, and set take-up spring height by turning
the entire tension assembly (3) toward left or right, as
required. Securely tighten screw (2).
17.TO ADJUST BOBBIN THREAD TENSION
Fig.21.
Regulate bobbin thread tension with tension regulating
screw (1), Fig.21.
+......More tension
-......Less tension
18.NEEDLE POSITION SELECTOR
Switch off the machine.
Left, Center and Right needle position settings are
available for placement of both straight and zigzag
stitching (see Fig.22).
To position, push lever in and move to desired setting.
Do not make any needle position adjustment while the
needle is in the fabric.
19.STITCH WIDTH REGULATOR
Fig.23.
The width of zigzag stitch is controlled with the spring
biased stitch width regulating lever(1),Fig.23.
Maximum zigzag width;
20U73/73B 0-9 mm
20U83/83B 0-12 mm
Do not make any needie position adjustment while the
needle is in the fabric.
20.HOW TO CONTROL THE WIDTH OF ZIGZAG
STITCH
Fig.24.
To obtain minimum to maximum width (20U73/738:9mm.
20U83/83B:12mm) zigzag stitches, first loosen thumb
screw (2),Fig.24. to permit the stitch width regulator (3),
Fig.24 to return to its zero position (see A, Fig.24) and
retighten thumb screw (2).
Then loosen thumb screw (1),Fig.24. turn stitch width
regulator (3) clockwise as far as it will go and while
holding the regulator (3) in this position (see B,Fig.24),
retighten thumb screw (1).
You can now regulate the stitch width regulator within the
range of zero to maximum.
21.NEEDLE BAR FRAME CLAMPING DEVICE
Release
Switch off the machine.
When straight stitching, a better sewing result can be
obtained by locking the needle bar frame immovable with
the clamping device (see Fig.25).
A: Clamp
B: Release
22.FITTING FOR STRAIGHT AND ZIGZAG
STITCHING
606652(20U73/73B)
606402(20U83/83B)
2
Na
NS A
<=
606688(20U73/73B)
606650(20U73/73B) 606502(20U83/83B)
606651(20U83/83B) Fig.26.
606695
606693 606697
Fig.27.
General Purpose Presser Foot (1). Throat Plate (2) and Feed
Dog (3) as shown in Fig.26, are used for straight and zigazg
stitching.
Straight Stitch Presser Foot (1), Throat Plate (2) and Feed
Dog (3) as shown in Fig.27, are used for straight stitching
only.
23.CHANGINGTHE THROAT PLATE AND FEED DOG
Fig.28.
/\ CAUTION
Switch off the machine.
Za
1.Open bed slide, then remove throat plate. (Use
screwdriver (3) Fig.28, furnished with machine for
removal and replacement of throat plate and feed
dog.)
2.Using a screwdriver (2), remove bed plate (1) and
remove feed dog (4) (see Fig.28).
3.To replace general prupose or straight stitch feed dog,
fasten feed dog to machine temporarily and replace
general purpose or straight stitch throat plate. Set
feed dog correctly in position so that it will not hit the
edges of feed dog slots in the throat plate.
4 Replace bed plate and press it firmly in place.
24.TO MOUNT THREAD UNWINDER
Fig.29.
Fasten thread unwinder (1) to table (2) with wood screws
(3) as shown in Fig.29.
25.TO USE THE SPOOL CAP 27.KNEE LIFTER
TO MOUNT KNEE LIFTER
145mm
/
1
т
Fig.32.
Fasten knee lifter bracket (1) to underside of table (2)
145 mm from table cut-out as shown in Fig.32.
KNEE OPERATING PRESSER FOOT LIFT
Fig.30.
When using a reel type thread spool,fit the spool cap (1)
supplied with the machine onto the thread spool (3)
(see Fig.30).
Set height of spool rest so there is approximately 2 mm
clearance between top end of spool pin and the tip of the
slotted spigot of the spool cap (see Fig.30).
The spool cap should never be fitted on the spool pin (5).
Forcing it onto the spool pin may result in breaking the
slotted spigot of the spool cap (see Fig.30).
26.TO USE THE ANTI-SPILL SLEEVE
Fig.31.
Switch off the machine.
When using synthetic threads that easily spill off the cone Set sewing head upright again
(1), slip the anti-pill sleeve (2) furnished with the machine using both hands.
over the thread from the bottom of cone (1) leaving the Danger of crushing between sewing
thread end to hang free at the top of anti-spill sleeve (2) as head and table top.
shown in Fig.31.
.10.
Bell.cranks (1) and (2) shown in Fig.33 are fastened to the
underside of the bed. Bell crank (1) is used for lifting and
lowering the presser foot with knee, and bell crank (2) is
used for controlling the stitch width (see Fig.33).
To raise or lower the presser foot with knee, loosen
screw (4) holding the knee ligter shaft arm (3) and move
knee lifter shaft arm (3) just under the bell crank (1), and
firmly tighten screw (4) (see Fig.33).
Loosen the lock nut holding screw (7) and turn screw (7)
as required, so that the bent end (6) of knee lifter shaft
arm (3) will be alomost horizontal when knee lifter knee
plate (5) is pushed as far as it will go in the direction
indicated with arrow (A), then firmly tighten the lock nut
(see Fig.33).
With knee lifter shaft arm (3) set in position as described
above, loosen screw (8) and move knee lifter shaft arm (3)
up op down as required, so that height (10) from its bent
end (6) to bracket (9) is 64 mm (see Fig.33).
Raise presser foot (12) with presser foot lifter (11).Then
loosen the lock nut holding screw (14) and turn screw (14)
as required, so that knee lifter knee plate (5) when pushed
in the direction indicated with arrow (B), will stop at a point
(presser foot (12) raised approx.9 mm from throat plate
(13) surface ) where presser bar lifter (11) will drop down
from its raised position when presser bat is lifted a little
higher than its normal up position. Then firmly tighten the
lock nut (see Fig.33).
When knee lifter knee plate (5) is pushed in the dirction
indicated with arrow (B), the presser foot (12) will rise and
when knee plate (5) is released, presser foot (12) will be
lowered (see Fig.33).
KNEE OPERATING STITCH WIDTH CONTROL
11
12
C11.
AA CAUTION
Switch off the machine.
Set sewing head upright again using
both hands.
Danger of crushing between sewing
head and table top.
Bell cranks (1) and (2) shown in Fig.34 are fastened to the
underside of the bed. Bell crank (1) is used for lifting and
lowering the presser foot with knee and bell crank (2) is
used for controlling the stitch width.
To control the stitch width with knee, loosen screw (4)
holding the knee figter shaft arm (3) and move knee lifter
shaft arm (3) just under the bell crank (2) and firmly tighten
screw (4) (see Fig.34).
Loosen the lock nut holding screw (7) and turn screw(7) as
required, so that the bent end (6) of knee lifter shaft arm (3)
will be almost horizontal when knee lifter knee plate (5) is
pushed as far as it will go in the direction indicated with
arrow (A). Then firmly tighten the lock nut (see Fig.34).
With knee lifter shaft arm (3) set in position as described
above, loosen screw (8) and move knee lifter shaft arm (3)
up or uown as required, so that geight (10) from its bent
end (6) to bracket is 67 mm (see Fig.34).
Loosen stitch width regulating plate thumb screws (11)
and (12) so that stitch width regulator (13) can be moved
from zero to maximum stitch width.(20U73/73B:9mm,
20U83/83B: 12mm) (see Fig.34). Loosen the lock nut
holding screw (14) and tum screw (14) as required, so that
knee lifter knee plate (5) when pushed in the direction
indicated with arrow (B), will stop at the maximum stitch
width position of stitch sidth regulator (13). Then firmly
tighten the lock niut (see Fig.34).
Stitch width will become wider when knee lifter knee plate
(5) is pushed in the direction indicated with arrow (B) and
will become smaller when knee plate is released (see
Fig.34).
28.FITTINGS FOR BUTTONHOLE STITCHING
606652(20U73/73B)
606402(20U83/83B)
3
606688(20U73/738) __
606502(20u83/838) Fig. 35.
606692(20U73/73B/83/83B)
/N CAUTION
Switch off the machine.
Buttonhole Foot (1),General Purpose Throat Plate (2) and
Feed Dog (3) as shown in Fig.35 are used for buttonhole
stitching.
29.FITTING FOR HEM SEWING
410192 543979
541937-452
2
Switch off the machine.
Hemmer Foot (1), Straight Stitch Troat Plate (2) and Feed
Dog (3) as shown in Fig.36 are used for hem sewing.
30. FITTINGS FOR ZIPPER AND CORD SEWING
606652(20U7373B) 606688(20U73/73B)
606402(20U8383B) 606502(20U83/83B)
2 4
NN >
606695 606697
3
5
= À
606691
—— |
Fig.37
Switch off the machine.
Zipper Foot (1), General Purpose (2) or Straight Stitch (3)
Thorat Plate and General Purpose (4) or Stright Stitch (5)
Feed Dog as shown in Fig.37 are used for zipper and cord
sewing.
12.
31.CARING FOR YOUR MACHINE
N
Ds
?
ñ
J
TUN
p2
-)
Switch off the machine.
Set sewing head upright again using
both hands.
Danger of crushing between sewing
head and table top.
Your SINGER machine will serve you perfectly for many
years if you take a few moments of your time to keep it
clean. How often you will need to clean and lubricate the
machine will depend on how often you will use it.
When in regular use, the machine should be cleaned
periodically to remove lint and fluff which may have
accumulated around the working parts. A machine in
continuous use should be oiled frequently, especially when
the machine is operated at maximum recommended
speed. |
With a soft cloth, clean; (See Fig.38)
Thread retainer
Take-up lever
Thread guard
Tension discs
Needle bar
Presser bar
Machine arm and bed
With a lint brush, clean; (See Fig.38)
(9)Feed dog
(10)Rotating hook and area under throat plate.
Turn hand wheel over toward you until oil hole in
rotating hook appears in sight.
Apply one or two drops of oil to the oil hole.
IST
Correction
PAGE FROM — TO
410192 — [606694
P12. 541937-452 606695
Fig.36.
606697
543979
32.TROUBLESHOOTING CHART
Whenever sewing difficulty is encountered, check and make adjustments as follows.
4.1s needle bent or have a blunt point?
5.1s needle inserted correctly?
6.15 needle the correct size for thread and fabric?
7.1s thread free of slubs and knots?
Problem Cause Solution
1.1s machine properly threaded? 1.Correct needle threading
2.Are thread guides or tension disc area lint-free? { 2.Remove lint and fluff in bobbin case and
hook
Needle thread | 3:18 needle-thread tension too tight? 3.Adjust needle thread tension
breaks 4.Insert new needle
5.Insert needle correctly
6.Select proper needle size and thread
7.Remove slubs and knots
Bobbin thread
breaks
8.ls bobbin threading correct?
9.ls thread tangled or caught?
10.1s thread tension correct?
11.Does bobbin rotate smoothly?
8.correct boobin threading
9.Untangle thread from bobbin case and
hook
10.Adjust needle and bobbin case thread
tension
11.Check whether bobbin thread is wound
correctly
Stitches skip
12.Is needle inserted correctly?
13.1s needle bent or have biunt needle point?
14.1s size of needle and thread suitable for fabric?
15.1s threading correct?
12.Insert needle correctly
13.Insert new needle
14.Select proper needle size and thread
15.Correct needle threading
Needle breaks
16.1s needle properly inserted?
17.1s needle bent?
18.15 needle the correct size for the fabric?
19.15 needle clamping screw loose?
20.1s the fabric pulled while sewing?
16.Insert needle correctly
17.Insert new needle
18.Select proper needle and thread for fabric |
19.Tighten needle set screw
20.Do not pull fabric while sewing
Fabric fails to
feed
21.1s feed regulating dial properly adjusted?
22.Is presser foot pressure adjusted properly?
21.Lengthen stitch length by feed regulating
dial
22.Adjust correct presser foot pressure
Fabric puckers
23.1s needle threading correct?
24 1s needle point blunt?
25.15 thread tension too tight?
23.Correct needie threading
24.Insert new needle
25.Adjust needle tension properly
Rotating heavy
Noisy
26.1s there any lint or fluff on feed dog?
27.1s there any lint in rotating hook?
26.Remove lint and fluff from feed dog
27.Remove lint and fluff from rotating hook
Machine fails to
start
28.Are electrical plugs properly eonnected?
29.1s power and light switch turned on?
28. Turn on power switch
29.Connect plug to power source
If you still have difficulty in sewing even after making adjustments, contact your nearest Service Center.
‚ 13.
33.SPECIFICATIONS
Machine class 73/73B 83/83B
For sewing Light to medium
Stitch type 301 (lock stitch), 304 (Zigzag lock stitch)
Max. speed* 2,500 r.p.m. 2,000 r.p.m.
Max.stitch bight 9.0mm 12.0mm
Max.stitch length 5.0mm 5.0mm
Needle bar stroke 34.8mm
Presser bar lift (manual) 6.35mm
Presser bar lift
9.0mm
(knee lifter)
Needle catalo
9 CAT.1910-05 (135X9)
(needle system)
Needle size See page 3 table “NEEDLE AND THREAD”
Machine pulley 74mm effective dia. for V-belt
Oil SINGER “B” Oil
Workispace width 211mm
Workspace height 130mm
Bedplate dimensions 399mmX178mm
Net weight (head only) 19.5Kg 20.0Kg
Gross weight 21Ko 21.5Kg
(with accessories)
Noise”* n=1,600 r.p.m. <76 dBA
* Mzximum speed will vary depending on fabric, threads and sewing condition.
** Noise mesurment according to DIN 4563-45-A-1.
Relationship between zigzag bight and maximum speed
Machine class 73/73B 83/83B
Zigzag bright Omm-5mM Smm-9mm Omm-5mm 5mm- 12mm
Max. speed 2,500 r.p.m 2,000 r.p.m 2,000 r.p.m 1,800 r.p.m
Part No.606625(1100)
Printed in China
14.