Singer Quantum 7312 Manual

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• Quantum 7312 Singer Sewing Machine Manual
• Singer Quantum 7312 Manual

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CAUTION!

POLARIZED PLUG FOR NORTH AMERICAN TERRITORIES

To reduce the risk of electric shock, this appliance has a polarized plug (one blade is wider than the other). This plug will 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 change the plug in any way.

IMPORTANT SAFETY INSTRUCTIONS

When using this machine, basic safety precautions should always be followed including the following:

Read all instructions before using this machine.

DANGER.

To reduce the risk of electric shock:
■The machine should never be left unattended when plugged	in.	Always	unplug	the
machine from the electric outlet immediately after using and before cleaning.
■ Always unplug before changing light bulb. Replace bulb with	the	same type rated		12
volts, 5 watts. Be sure to replace the face plate which covers the light			bulb before
operating the machine.

WARNING.

To reduce the risk of burns, fire, electric shock or injury to persons:
■	Be sure that the electrical voltage of the socket outlet	(wall receptacle) Is	the same
as the rated voltage of the motor.
■	Use this machine only for its intended use as described	in this Operator’s Guide. Use
only attachments recommended by the manufacturer as	contained in the	Operator’s
Guide.

■To disconnect, turn all controls to the off ('O') position, then remove plug from outlet.

■Disconnect the power-line plug from the socket outlet or switch the machine off when

making		any adjustments in the needle area, such as	threading	needle, changing nee­
dle, changing needle plate or changing presser foot, etc.
■	Always		unplug the machine from the electrical outlet	when removing covers, lubricat­
ing,	or	when making any other user servicing	adjustments mentioned		in	the
Operator’s Guide.
■	Do	not	attempt to adjust the motor belt. Contact your nearest		Service Center	should
any adjustment be required.
■	Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
■	Handle		the foot controller with care and avoid dropping	it on the	floor. Be sure	not	to

place anything on top of It.

■Always use the proper needle plate. The wrong plate can cause the needle to break.

■Do not use bent needles.

■	When sewing, keep fingers away	from all	moving	parts.	Special care		is required
around the sewing machine needle.
■	Do not pull or push fabric while stitching. This may deflect				the	needle causing it to
break.
■	Before removing the bobbin case, remove plug from the socket outlet.
■For double insulated machines, when		servicing,	use	only identical		Singer	replacement
parts. See instructions for Servicing of Double-insulated Appliances.
■	Never operate the 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

ma­

chine

to

the nearest authorized dealer or Service Center

for

examination, repair,

elec­

I

trical, or mechanical adjustment.

Never operate the machine with

any air openings blocked. Keep

ventilation

openings

of the machine and foot

controller

free from the

accumulation

of

lint,

dust,

and

losse

cloth.

I Never drop or Insert any object into any opening.

I Do not use outdoors.

I

Do

not

operate where aeroslo (spray) products are being

used

or

where oxygen Is be­

I

ing administered.

Do

not

allow to be used as a toy. Close attention is necessary when

the machine is

used by or near children.

¡SERVICING OF DOUBLE-INSULATED PRODUCTS. In a double-insulated product,

two

systems

of insulation are

provided

instead of grounding.

No grounding

means is

pro­

vided

on

a double-insulated product, nor should

a means for

grounding be

added to

the

product.

Servicing

of a double-insulated

product

requires

extreme

care

and

knowledge of

the system,

and should be done only by qualified service

personnel.

Re­

placement parts for a double-insulated product must be identical to those parts in the

product. A double-insulated product' is marked with the words 'DOUBLE­ INSULATION' or 'DOUBLE-INSULATED'.

SAVE THESE INSTRUCTIONS

Servicing should be performed by an authorized service representative.

This product is intended for household use.

FOR EUROPEAN AND SIMILAR TERRITORIES:

This puoduct Is suppressed for radio and television interference with the international Electrotechnical Commission requirements of the CISPR.

Machine

for

Great

Britain and some other

countries having

similar

wiring

standards

are

shipped

from

the factory with a plug

for connection to

the

mains. The

wires in

this mains lead are coloured in accordance with the following code:

Blue.neutral (N) Brown:live (L)

As

the colours of

the wires In the mains lead of this appliance

may

not

correspond

with

the

coloured

markings identifying the terminals in your plug,

proceed as follows:

The

wire

which is

coloured blue must be connected to the terminal

which

is

marked

with the letter N or coloured black. The wire which Is coloured

brown

must

be

con­

nected to the terminal which is marked with

the letter L or coloured

red. If

a

13

Amp.

(BS

1363) plug is

used, a 3 Amp. fuse must be fitted, or If any

other

type

of

plug is

used, a 5 Amp. fuse must be fitted either in the plug or adaptor

or

at

the

distribution

board. Neither cord is to b^ connected to the earth terminal of a three-pin plug.

TABLE OF CONTENT
PERFORMANCE CHECKLIST....................	i
IMPORTANT SAFETY INSTRUCTIONS................	1
PRINCIPAL PARTS........................	2
STANDARD ACCESSORIES INCLUDED WITH MACHINE.........	3
CONNECTING AND RUNNING MACHINE...............	4
WINDING BOBBIN.........................	Scp light containment zone. 5
THREADING MACHINE.......................	6
INSERTING WOUND BOBBIN....................	7
RAISING BOBBIN THREAD.....................	7
SELECTING A PATTERN......................	8
STRAIGHT STITCH........................	8
STITCHING IN REVERSE......................	8
KEEPING SEAMS STRAIGHT....................	8
ADJUSTING NEEDLE POSITION..................	9
TURNING SQUARE CORNERS...................	9
USING SEAM GUIDE........................	9
RECOMMENDED SETTINGS AND APPLICATIONS...........	Mirror for samsung tv mac cracked. 10
ADJUSTING THREAD TENSION...................	12
ADJUSTING STITCH WIDTH....................	12
ADJUSTING STITCH LENGTH...................	12
BALANCING A PATTERN.....................	12
FREE ARM SEWING.......................	12
CHANGING PRESSER FEET....................	13
ATTACHING FEED COVER.....................	13
BLINDSTITCHING........................	14
OVEREDGING AND SEAMING...................	14
SEWING BUTTONHOLES.....................	15
ADJUSTING BUTTONHOLE BALANCE................	16

SEWING ON A BUTTON......................	16
Yor unistaller. DARNING............................	17
FREE MOTION EMBROIDERY...................	17
CHANGING NEEDLE.......................	18
FABRIC, THEREAD AND NEEDLE TABLE..............	18
INSERTING A ZIPPER.......................	19
OPTIONAL ACCESSORIES NOT INCLUDED.............	19
REMOVING AND REPLACING BOBBIN CASE............. Dolby atmos demo clip download.	20
REMOVING AND REPLACING LIGHT BULB.............	21
CLEANING MACHINE.......................	21

Dear Customer:

We recommend that for future reference you record the Serial Number of your Sewing Machine in the space provided.

Refer to illustration

at right for location

Serial No.

of Serial Number on your machine.

Model No.__________

Serial No.

To ensure that you are always provided with the most modern sewing capabilities, the manufacturer reserves the right to change the appearance, design or accessories of this sewing coachine when considered necessary.

A trademark of The Singer Company

SINGER CUSTOMER ASSISTANCE IN THE U.S.A. TOLL-FREE NUMBER:1-800-877-7762

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Bobbin Winder Thread Guide

Stitch Width Lever

Needle Position Selector

Balance Lever

Bobbin Winder

Reverse Lever

Thread Cutter

Stitch Length lever

Sewing Light

Accessory Box

Needle

Hand Wheel
Presser Foot	Presser foot lifter
Needle Plate	Pattern Selector Dial
Bobbin
Bobbin Case	Power and Light Switch
Slide Plate
. Speed Controller

(A)

General purpose needle plate (on machine)

#312777

(B)

General purpose presser foot (on machine)

#313150

(E)

Zipper foot #171480

(F)

Feed cover #313117

(K)

Blindstitch presser foot #381491

(J)

special purpose presser foot #171463

(L)

Buttonhole presser foot #313992

(Q)

Small spool cap

©#507664

J

Spool cap (on machine) #179967

Lint brush #546358

Needle pack

Bobbins

(1 in machine) #172336

Class 66 Drop-in

¡il'”'

CONNECTING-

Push speed controller tube (1) and electrical power cord (2) into receptacle

(4).

Plug power cord (3) into electric outlet.

RUNNING-

Power on - press 'I' side of switch

Power off - press 'O' side.

Press sepped controller	When not using machine, rewind
to run machine.	air hose around speed controller
for storage, as shown.

Quantum 7312 Singer Sewing Machine Manual

Note:

INSTRUCTION SYMBOLS

To simplify understanding, the following

symbols are used throughout the operator’s	gl Lower presser foot.
manual.		Press speed controller

Turn power off.	Use hand wheel to	Raise presser foot.
raise needle.

1 yfflNDlNG BOBBIN

Push indent on hand	Place thread and cap onto spool	Snap thread into thread guide.	Wind thread around bobbin	Thread bobbin and
wheel.	pin.	winder thread guide.	place on spindle.

For best sewing performance use proper spool cap.

Slide spool cap firmly over the rim of the spool to prevent thread tangling.

-5-

0

Push bobbin to the right.

Hold thread end.

Step on speed controller.

Push bobbin to the left.

Cut thread.

Press side opposite indent.

(’hr-

Place thread and cap onto spool Snap thread into Thread guide.

following arrows, guide thread

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This part of the sewing machine is also known as the balance wheel, and it plays a vital role in controlling the movement of the needle as well as the take-up lever. The handwheel is available in both manual and electric sewing machines and one has to be aware of the various dynamics that surround the availability and usability of this part of the device.

Singer Quantum 7312 Manual

A crucial factor to note is that; when wounding the bobbin in older models; the handwheel should be released to prevent the needle from moving in the absence of a fabric to be sewn. This is done by holding the outer wheel and turning the inner one.

When using the sewing machine, the primary rule of engagement with the handwheel is to ensure that its motion is initiated in anticlockwise movement. Any attempt to spin it in anticlockwise will lead to various damages within the sewing machine that will end up being costly.

Turning the handwheel in clockwise motion is allowed when unjamming the bobbin, but it has to be slight. On certain occasions, one might experience difficulty in turning the handwheel. During such times, one should avoid the use of force as it may cause further damage.

The handwheel may be hard to turn due to certain factors that one can efficiently resolve on their own, or the damage may be extensive and require the services of an expert technician. The steps to follow when the handwheel is hard to turn are as discussed below.

1. Adjust the Handwheel’s inner Knob

Most old models of sewing machines if not all are designed with a knob inside the handwheel that may be locked, making it hard to turn the handwheel. It is vital for one to check this part and disengage it as it is done when threading the bobbin then turn the handwheel. This is the first step that one should take to ensure that the handwheel is not being jammed by the positioning of the smaller wheel inside it when using an old model device.

2. Re-thread the Sewing Machine

The first step advised is threading the sewing machine again to ease up any tension that may have been caused by tangling of the thread, hence making it hard to turn the handwheel. Once this has been done, one can try to move the handwheel, and if it is still hard to turn the next step is necessary.

3. Remove the Bobbin Case

If re-threading does not offer the solution to a jammed handwheel, the next step is to remove the bobbin case and clean up the surrounding areas. This should be done using a brush to remove any lint build-up that may have affected the motion of the handwheel. When cleaning, the race and bobbin thread sensor are two parts that one should pay keen attention on to achieve the desired results. After cleaning, one should check if the handwheel moves with ease before putting back the bobbin case.

Final Remarks

If the handwheel moves freely with the bobbin case removed, the next step is to insert it to see if it works or not. If the handwheel does not move freely with the case removed, it is time to take it in for servicing. Alternatively, one can ring sewing machine technicians within their locality to see if they do home visits.