Singer 20U User manual

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3NIHOVIAI ONIM3S
H3ONIS

Congratulations!
As the owner ofa SINGER*artisanzigzagsewingmachineModel
20U, youare about to enter a wonderful new world of sewing!
From the moment you begin tosewat yourModel 20U, you will
be delighted with its easy dependable operation.
• Perfectstraightstitching.
• Zigzag and ornamental stitching ina variety of width and stitch
lengths.
• Superfinecontrol of stitchlengthinsuresperfectsatinstitching.
• Speeds upto 2,000stitches per minute at maximumzigzagstitch
width (9mm) and 2,500stitches per minute at zigzagstitchwidth
of 5mm or lessdepending on materialbeingsewn and type of
work beingdone.
May we recommend that, before you begin to sew, you discover all
the manyadvantages of yourModel 20Uby goingthroughthis
instruction book step by step while seated at your machine.
SINGER* Service is alwaysclose at hand. If yoursewingmachine
shouldneedservicing,callyourlocalSINGERCENTER tobe sure
of warrantedSINGER*Parts and SINGERService. You will find
the addressunderSINGERCOMPANY inthe classifiedtelephone
directory.
*A Trademark ofTHE SINGERCOMPANY
Copyright ©1987 SINGER SEWINGMACHINECOMPANY
All Rights Reserved Throughout The World

CONTENTS
Page
Principal Parts of Model 20U Machine 2
Fabric, Thread,Needle and StitchLength Table 3
Needles and Thread 4
ToSetthe Needle 4
Threading the Needle 5
To Remove the Bobbin 5
To Wind the Bobbin 6
Threading the BobbinCase 8
To Replace the BobbinCase 9
Raising the BobbinThread 9
To Adjust Stitch Length 10
To AdjustPressure 10
To AdjustThreadTensions 11
Needle Position Selector 12
Stitch Width Regulator 12
How to Control the Width of ZigzagStitch 13
Needle Bar FrameClampingDevice 15
StraightStitching 15
Changing the Throat Plate and Feed Dog16
Lever Positions for StraightStitching 16
How toSewa Seam 17
Page
Satin Stitching 18
ZigzagStitching 19
LingerieSeams 19
Seams in KnitFabrics 19
DecorativeStitches 19
Buttonholes 20
Monograms and Motifs 22
ScriptLettering 22
Applique 24
Hemmer Foot 25
PlainNarrowHems 25
Zipper Foot 26
ZipperInsertion 26
CordedSeams 27
OtherPracticalApplications 28
Caring for YourMachine 30
Assembling the ThreadUnwinder 32
ToUsethe Spool Cap33
ToUsethe Anti-Spill Sleeve 34
Knee Operating Stitch WidthControl 35

PRINCIPAL PARTS OF MODEL 20U MACHINE
Thread Guide
Take-upLeverGuard
Take-upLever
PressureRegulatingThumbScrew
Arm Top Cover
FacePlate
Thread Guard(upper)
Slack ThreadRegulator
Needle Bar FrameClamping
ThumbScrew
Thread Guard(lower) -
Needle Bar
Presser Foot Screw
Presser Foot
ThreadGuideHolder
Spool Pin
BobbinWinder
Bed Slide
ThroatPlate
Stitch WidthRegulating
PlateThumbScrew
HandWheel
FeedRegulatingDial
StitchWidthRegulator
FeedReverseLever
NeedlePositionSelector
Tension(complete)
NeedleClampThumbScrew
-2-

FABRIC, THREAD,NEEDLE AND STITCHLENGTHTABLE
Fabrics
DELICATE — tulle, chiffon, fine
lace, silk, organdy, fine tricot
LIGHTWEIGHT — batiste, or-
gandy, jersey, voile, taffeta,
silk, crepe,, plastic film
MEDIUM WEIGHT —gingham,
percale, pique, linen, chintz,
faille, satin, fine corduroy,
suitings
Thread sizes
FineMercerized
80to 120 Cotton
SyntheticThread
50 Mercerized
60 to80 Cotton
A Silk
SyntheticThread
50 Mercerized
50 to60 Cotton
A Silk
Synthetic Thread
Needle sizes
9 or11
11 or14
Stitches per
inch
15 to 20
Stitch length
setting
1-1/2- 1-1/4
12 to 15 1-3/4- 1-1/2
(8 to10for plastic) (3-1/4 ~ 1-1/21
12 to15
1-3/4- 1-1/2
MEDIUM HEAVY — gabardine,
tweed, sailcloth, denim, coat-
ings, drapery fabrics
Heavy Duty
Mercerized
40to50 Cotton
16 10 to12 2-1/2- 1-3/4
HEAVY — overcoatings, dun-
garee, upholstery fabrics, can-
vas
Heavy Duty
Mercerized
30to40 Cotton
18 6 to10 4-1/2 -2-1/2
-3-

NEEDLES AND THREAD
This machineusesneedleCatalog1910-05,available
in sizes 9,11,14,16and18.
The needle youuse should be straight,with a sharppoint,
to ensure perfect stitchformation and needlepenetrationthrough
the fabric. The needleshouldalso be fine enough to prevent the
fabric frombeingmarredwithlargepunctures, yet heavyenough
to pierce the fabric without being bent or deflected.Remember,
too,that theeyeofthe needlemust be largeenough forthe thread
to pass through it freely; too fine a needlewillcause the thread to
fray.
Be sure touse likethreads for bothneedle and bobbin.
TOSETTHE NEEDLE
1. Raiseneedle bartoits highestposition by turninghandwheel
towardyou.
2. Loosen the needleclampscrew and insertneedleintoclamp
as far as it will go, with the long groovetoward you. Then
tighten the needleclampscrew.
LONG GROOVE
TOWARD YOU
-4 -

THREADING THE NEEDLE
1. Turnhandwheeltoward youto raisetake-uplever
to its highestposition.
2. Raise the presser foot.
3- Leadthreadfrom the thread unwinder through allthe
threading points shown. Thread the needlefromfront
to back.
4. Draw about 3 inches of thread through eyeof needle.
TO REMOVE THE BOBBIN
1. Turnhandwheeltoward you until needle isatits
highest position.
2. Open bed slide.
3. Reach up from under the table with lefthand,open
bobbincaselatch A,and lift out bobbincase B.
4. Release latch and removebobbinfrombobbincase.
B \ 5-

TO WIND THE BOBBIN
1. Stopmotion of needle by looseningstop-motionscrew A. Holdhand
wheel with left hand and turnstop-motionscrewtoward you with
right hand.
2. Placebobbin on bobbinwinderspindle B, pushing it on as far as it
will go.
3. Placethreadspool on spool pinand pass the threadthroughthread
guide G! , betweentension discs D and throughthreadguide C2 andto
the bobbin. Wind endof threadaround the bobbin a few times and
press latch E againstbobbin, then start the machine.
4. Allow the tensiondiscs to control flow of thread. Donot guide or
holdthreadwhenwinding the bobbin.
5. Winding willstopautomaticallywhen bobbin is fully wound.
6. Removebobbin from spindle and tightenstop-motionscrew A by
turning it away from you withrighthandwhileholding the hand
wheel withyourlefthand.
-6-

TO WIND THE BOBBIN (cont'd)
Bobbins canbe woundwhile the machine is stiching. To windbobbins
while the machine is stiching,follow the precedinginstructionsonly do
not loosen the stop-motion screw.
To adjust the amount of thread onthe bobbin,loosenscrew F on latch
E and whileholdingstud G with a screwdriver,swing latch E away from
you or toward you, as required.
•For morethread on bobbin,swinglatch E awayfromyou.
•For lessthread on bobbin,swing latch E towardyou.
• Tightenscrew F
if threadwindsunevenly on bobbin,loosenscrew H and movetension
bracket I upor down, as required,then tighten screw H.
G F

THREADING THE BOBBIN CASE
1. Holdbobbin so thatthreadunwinds inthe direc-
tion shown, andput bobbin in bobbincase.
2. Pull thread into notch A and draw it undertension
spring B.
3. Drawthread out from slot onendof spring and
pass it throughbobbincasethreadguard C. Allow
about 4 inches of thread to hang freely from
bobbin.
NOTE: When straight stitching, a betterresult can
be obtained if bobbin-thread isnot threadedthrough
bobbincasethreadguard C.