Brother 681B-UG User Manual
Brother 681B-UG
R
WHEN CHANGING NEEDLE, BOBBIN OR LIGHT BULB, O
WHEN SEWING MACHINE IS NOT IN USE, IT IS
RECOMMENDED THAT ELECTRICAL SUPPLY IS
DISCONNECTED TO AVOID ELECTRICAL HAZARDS.
CAUTION
CONTENTS
1. Knowing Your Sewing
Machine
PRINCIPAL PARTS . . . . . . . . . . . . . . . . . . 2
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . 4
OPERATING YOUR SEWING
MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connecting plug. . . . . . . . . . . . . . . . . 5
Controlling sewing speed. . . . . . . . . . 5
UPPER (NEEDLE) THREAD. . . . . . . . . . . . 6
LOWER (BOBBIN) THREAD. . . . . . . . . . . 7
How to wind bobbin. . . . . . . . . . . . . 7
How to remove bobbin case . . . . . . . 8
How to thread and insert
bobbin case . . . . . . . . . . . . . . . . . . . . 8
How to pull up lower thread . . . . . . . 9
NEEDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
How to change the needle . . . . . . . . . 9
How to check the needle . . . . . . . . . . 9
RELATIVE CHART OF SEWING
MATERIAL, NEEDLE AND THREAD. . . .10
EXTENSION TABLE . . . . . . . . . . . . . . . . . .10
SEW-LIGHT. . . . . . . . . . . . . . . . . . . . . . . . . 11
PRESSER FOOT . . . . . . . . . . . . . . . . . . . . . 11
VARIOUS CONTROLS . . . . . . . . . . . . . . . . 12
Stitch length . . . . . . . . . . . . . . . . . . . .12
Zigzag width . . . . . . . . . . . . . . . . . . . 12
Pressure adjuster . . . . . . . . . . . . . . . . 13
Feed dog . . . . . . . . . . . . . . . . . . . . . . 14
Reverse stitch . . . . . . . . . . . . . . . . . . 14
THREAD TENSIONS . . . . . . . . . . . . . . . . . 15
Upper thread tension. . . . . . . . . . . . . 15
Lower thread tension. . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . . . . .2
2. Straight Stitching . . . . . . . . . . . . . . 17
How to start sewing. . . . . . . . . . . . . . . . . 17
How to change sewing direction. . . . . . . 17
How to finish your sewing
project . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
How to remove final sewing
from machine . . . . . . . . . . . . . . . . . . . . . 18
How to guide and support material. . . . . 18
3. Zigzag Stitching . . . . . . . . . . . . . . . 19
Simple zigzag stitch . . . . . . . . . . . . . . . . .19
Satin stitch . . . . . . . . . . . . . . . . . . . . . . . . 19
Decorative stitches . . . . . . . . . . . . . . . . . 20
4. Using Built-in Patterns . . . . . . . . 21
Triple stretch stitch . . . . . . . . . . . . . . . . . 21
Blind stitch . . . . . . . . . . . . . . . . . . . . . . . 22
Shell stitch . . . . . . . . . . . . . . . . . . . . . . . 22
5. Various Other Stitches. . . . . . . . . 23
Buttonholes . . . . . . . . . . . . . . . . . . . . . . . 23
Mending . . . . . . . . . . . . . . . . . . . . . . . . . 24
Attaching lace . . . . . . . . . . . . . . . . . . . . . 24
Appliquéing . . . . . . . . . . . . . . . . . . . . . . .25
Cording. . . . . . . . . . . . . . . . . . . . . . . . . . 25
Monogramming . . . . . . . . . . . . . . . . . . . . 26
Embroidering . . . . . . . . . . . . . . . . . . . . . 27
Button sewing . . . . . . . . . . . . . . . . . . . . . 28
Darning . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Cloth guide . . . . . . . . . . . . . . . . . . . . . . . 29
Narrow Hemming . . . . . . . . . . . . . . . . . . 30
Zipper insertion . . . . . . . . . . . . . . . . . . . 31
6. Maintenance and Care of
Your Machine
CLEANING . . . . . . . . . . . . . . . . . . . . . . 32
Removing shuttle hook . . . . . . . . . . . 32
Cleaning shuttle race . . . . . . . . . . . . . 33
Cleaning feed dog . . . . . . . . . . . . . . . 33
OILING . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CHECK LIST FOR BETTER SEWING . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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. . . . . . . . . . . . . . . . . 32
1. Knowing Your Sewing Machine
Principal Parts
1. Top Cover
2. Zigzag Width Lever
(See page 12)
3. Upper Thread Guide and Bobbin Winder
Tension Disc
4. Front Thread Guide
5. Pressure Adjuster (See page 13)
6. Face Plate
7. Thread Tension Dial (See page 15)
8. Thread Cutter
9. Presser Foot Screw
10. Presser Foot (Zigzag)
11. Feed Dog (See page 14)
12. Needle Plate
13. Needle Clamp Screw
14. Shuttle Race cover
15. Drop Feed Knob (See page 14)
16. Reverse Sewing Button (See page 14)
17. Stitch Length Dial
By turning this dial, you can control the
length of the stitch.
The higher the number, the longer
the stitch (See page 12)
18. Blind Stitch & Stretch Stitch Lever
19. Spool Pins
20. Bobbin Winder Device
21. Balance Wheel
22. Stop Motion Knob
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23. Motor Belt
24. Motor
25. 3-pin Socket
26. Extension table
27. Presser Foot Lifter
When the presser foot is at the highest
position, the tension on the upper thread
is released.
28. Sew-light Switch
Turn this knob in any direction to switch
light on and off.
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Accessories
1. Needles
Single Needle No.14 (3 pcs.)
2. Straight Stitch Foot
3. Narrow Hemmer foot
4. Zipper Foot
5. Buttonhole Foot
6. Button Sewing Foot
7. Seam Ripper
8. Bobbin (3 pcs.)
9. Cloth Guide with Screw
10. Screw Drivers (Large & Small)
11. Oiler
-4-
Operating Your Sewing Machine
CONNECTING PLUGS
1. First connect three-prong plug in socket.
2. Then connect electric supply plug into wall.
CAUTION
When changing needle, bobbin or light bulb,
or when sewing machine is not use, it is
recommended that electrical supply plug
is disconnected to avoid electrical hazards.
Place foot on control pedal as shown in
illustration at left.
When foot controller is pushed down lightly,
machine will run at a low speed.
When pressure on foot is increased, sewing
machine will pick up speed.
When foot controller is released the sewing
machine will stop.
NOTE: Care should be taken that nothing is
placed on foot controller when
sewing machine is not in use.
-5-
Upper (Needle) Thread
Before threading, make sure to raise presser
foot and take-up lever to the highest position.
Then place spool of thread on the spool.
1. Pass thread through the upper thread
guide, (rear) and thread guide (front).
2. Now bring thread down and up through
thread tension dial from right to left so
that thread picks up thread check spring.
3. Pass thread into the eyelet of the thread
take-up
lever from right to left. And
bring down again and pass through
the thread guard.
4. Bring down and pass through the thread
guides.
5. Thread needle from left to right and
draw the thread out about 15 cm (6
inches).
NOTE: If the threading order is not correct,
thread breakage, stitch skipping,
wrinkling of fabric will occur.
-6-
Lower (Bobbin) Thread
HOW TO WIND BOBBIN
1. Loosen stop motion knob by turning it
toward you.
3. Place thread spool on the spool pin and take
thread through bobbin winder tension disc.
2. Place an empty bobbin on the bobbin
winder pin.
4. Wind the thread a few times around the
bobbin clockwise and push the bobbin
toward bobbin presser. Start the machine
gently.
5. Bobbin stops winding when full.
6. Push the bobbin to the left and remove it.
Tighten stop motion knob securely.
-7-
HOW TO REMOVE BOBBIN CASE
1. Raise needle to its highest position.
2. Open the shuttle cover.
3. Pull and open the latch of bobbin case.
4. Pull out bobbin case from the shuttle.
HOW TO THREAD AND INSERT BOBBIN CASE
1. Unwind about 8 cm
(3- inches) of thread
from the bobbin. Insert
wound bobbin into
4. Holding case latch
with the metal finger
of case pointing up, fit
it into the notch at the
top of the shuttle race.
2. Pull trailing thread into the slot
case.
5. Release latch and push case to
the right making sure the case
is in the proper position. Close
the Shuttle Cover.
-8-
3. Pull thread to the left
under the tension
spring until thread
enters into delivery
eye.
NOTE: The thread drawn
out of the case is to be
left hanging below the
race. Leave about 15
cm ( 6
inches )
hanging.
HOW TO PULL UP LOWER THREAD
1. Raise needle and presser
foot to the highest point.
With left hand, hold the end
of upper thread and with
right hand, turn balance
wheel toward you until the
needle moves down and up
again to its highest position.
2. Now upper thread catches
the lower thread in a loop.
Pull upper thread toward
you so that lower thread will
come up in a large loop
from the presser foot.
3. Pull both threads under the
toes of presser foot and
place them to the rear
leaving about 10 cm ( 4inches).
Needle
HOW TO CHANGE THE NEEDLE
1. Raise needle to its highest position.
2. Loosen needle clamp screw and remove
3. Insert new needle up into needle clamp hole
4. Tighten needle clamp screw securely.
HOW TO CHECK THE NEEDLE
For smooth sewing, needle must be straight and
sharp.
To check if the needle is bent, place the flat side
of the needle down on slide plate as shown in
illustration.
-9-
old needle.
as far as it will go against the needle stop.
Make sure the flat side of needle faces
toward the right side and the long groove
toward left.
Relative Chart of Sewing Material, Needle and Thread
SEWING MATERIAL
VERY THIN
LIGHT
WEIGHT
MEDIUM
HEAVY Denim, Gabardine, Tweed, Corduroy 16
VERY HEAVY Canvas, Overcoatings, Upholstery 18
Fine tricot, Fine Lace, Thin linen, Silk,
Tulle, Chiffon
Organdy, Jersey, Voile, Taffeta,
Synthetics, Silk
Batiste
Cotton, Gingham, Poplin, Percale,
Pique, Satin,
Velvet, Lightweight wool, Fine
corduroy, Suitings.
NEEDLES
SIZES
9
11
14
THREAD SIZES
Cotton: 80~120
Synthetic
Fine Mercerized
Cotton
Cotton: 60~80
Silk: “A”
Synthetic
Mercerized 50
Cotton: 50~60
Silk: “A”
Synthetic
Mercerized 50~60
Cotton: 40~50
Mercerized Heavy
Duty
Cotton: 30~40
Mercerized Heavy
Duty
NOTE: The same size thread should be
used for upper and lower threads.
Extension Table
This sewing machine has an extension table which
converts it into a flat-bed machine.
To insert the extension table:
1. Slide the extension to the right as shown in
2. To remove extension table, just pull it to the
illustration.
left.
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