Brother 681B-UG User Manual Download Page 18 | Manualshive

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PERFECT STITCHING

Tension of upper and lower threads should
be equal, just sufficiently strong to lock
both threads in material.
Perfect stitching appears flat with no
puckering of material.

INCORRECT STITCH (A)

When the upper thread lies on the surface
of the material by pulling the lower thread
up as shown.
This is caused by tight tension on the upper
thread or loose tension on the lower thread.
To correct this, turn the upper thread tension
dial to a lower number.
If perfect stitching cannot be obtained by
adjusting upper thread tension, adjust bobbin
tension.

INCORRECT STITCH (B)

When the lower thread lies on the under
surface of the material by pulling upper
thread down as shown.
This is caused by loose tension on the upper
thread or tight tension on the lower thread.
To correct this, turn the upper thread tension
dial to a higher number.
If perfect stitching cannot be obtained by
adjusting upper thread tension, adjust bobbin
tension.
NOTE: It is recommended that a test sample

is made before starting to sew.

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Summary of Contents for 681B-UG

Page 1: ...Brother 681B UG ...

Page 2: ...CAUTION WHEN CHANGING NEEDLE BOBBIN OR LIGHT BULB OR WHEN SEWING MACHINE IS NOT IN USE IT IS RECOMMENDED THAT ELECTRICAL SUPPLY IS DISCONNECTED TO AVOID ELECTRICAL HAZARDS ...

Page 3: ...15 Upper thread tension 15 Lower thread tension 15 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...

Page 4: ...utter 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 Bobbi...

Page 5: ...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 3 ...

Page 6: ...les 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 ...

Page 7: ...at 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 contr...

Page 8: ...hrough 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 ...

Page 9: ...er 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 3 Place thread spool on the spool pin and take thread through bobbin winder tension disc 7 ...

Page 10: ...bin into 2 Pull trailing thread into the slot case 3 Pull thread to the left under the tension spring until thread enters into delivery eye 4 Holding case latch with the metal finger of case pointing up fit it into the notch at the top of the shuttle race 5 Release latch and push case to the right making sure the case is in the proper position Close the Shuttle Cover NOTE The thread drawn out of t...

Page 11: ...nder the toes of presser foot and place them to the rear leaving about 10 cm 4 inches Needle HOW TO CHANGE THE NEEDLE 1 Raise needle to its highest position 9 2 Loosen needle clamp screw and remove old needle 3 Insert new needle up into needle clamp hole 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 4 Tigh...

Page 12: ... Velvet Lightweight wool Fine corduroy Suitings 14 Cotton 50 60 Silk A Synthetic Mercerized 50 60 HEAVY Denim Gabardine Tweed Corduroy 16 Cotton 40 50 Mercerized Heavy Duty VERY HEAVY Canvas Overcoatings Upholstery 18 Cotton 30 40 Mercerized Heavy Duty NOTE The same size thread should be used for upper and lower threads Extension Table 10 This sewing machine has an extension table which converts i...

Page 13: ... 2 Make sure to switch off the light and pull out supply plug when you replace the bulb in order to avoid electric hazards Presser Foot To remove the presser foot 1 Raise needle to its highest position 2 Raise presser foot 3 Loosen presser foot thumb screw and remove presser foot 4 To attach the presser foot place grooved side of the foot against the flat of the presser bar 5 Tighten thumb screw 1...

Page 14: ... decrease the stitch length turn dial clockwise to smaller on the dial NOTE 1 The 0 on the dial means that the material is not being fed 2 Always set at 4 when you sew triple stretch stitch See page21 ZIGZAG WIDTH The zigzag width is regulated by operating the zigzag width lever Numerals above the lever represent the width of stitch THE HIGHER THE NUMBER THE WIDER THE STITCH The 0 means straight s...

Page 15: ...wn 1 To regulate the pressure lower presser foot 2 Push outer ring of pressure adjuster down and inner pin will spring up to its highest position In this position pressure is completely released from the presser foot 3 To increase pressure push inner pin down with your finger NOTE You will be able to select the correct combination by referring to the table below 13 ...

Page 16: ...ng such as darning embroidery etc 2 UP is used for general sewing REVERSE STITCH Push the Reverse Sewing Button in as far as it will go to sew in reverse position Release Reverse Sewing Button and you are back to sewing in a forward position Reverse sewing is used for tacking and reinforcement 14 ...

Page 17: ...tension Turn dial to right to larger number To decrease tension Turn dial to left to smaller number NOTE The zigzag stitch requires less upper tension than the straight stitch LOWER THREAD TENSION Although lower thread tension has already been adjusted at the factory when sewing very thin or heavy materials it may have to be readjusted To regulate the lower thread tension turn small screw on the t...

Page 18: ... this turn the upper thread tension dial to a lower number If perfect stitching cannot be obtained by adjusting upper thread tension adjust bobbin tension INCORRECT STITCH B When the lower thread lies on the under surface of the material by pulling upper thread down as shown This is caused by loose tension on the upper thread or tight tension on the lower thread To correct this turn the upper thre...

Page 19: ...used wherever reinforcement is needed 5 Release Reverse Sewing Button and start sewing in forward position NOTE Do not pull the material Let the machine do the work Merely guide the material with your fingers If you pull the material your needle might either bend or break HOW TO CHANGE THE SEWING DIRECTION 1 Stop machine at the turning point while the needle is in the material 2 Raise the presser ...

Page 20: ...ver is in the highest position also 3 Lift presser foot and pull out the material gently to the left side diagonally 4 Cut both threads on the thread cutter 5 Leave 4 inches 10cm of thread between the presser foot loose while the thread take up lever is at highest position You are ready to sew HOW TO GUIDE AND SUPPORT MATERIAL Generally it is enough to guide the material in front of the presser fo...

Page 21: ...idth lever to your desired width and commence to sew 3 Before removing work from machine reset the zigzag lever to O and sew 5 6 stitches for reinforcement NOTE Generally zigzag stitch requires less upper thread tension than the straight stitches SATIN STITCH When the Stitch Length Dial is set to between the SATIN STITCH is produced This is used to make buttonholes and various decorative stitches ...

Page 22: ...DECORATIVE STITCHES SET YOUR SEWING MACHINE AS PER FOLLOWING TABLE Using the SATIN STITCH various decorative stitches are produced by using the zigzag width lever as follows 20 ...

Page 23: ...illustration at left The Triple Stretch Stitch is used for any stretch material such as knitted fabric tricot etc This stitch is three times the strength of a regular stitch and gives elasticity to seams which prevents breakage of thread NOTE With zigzag width lever set at 4 a triple zigzag stitch is produced which can be used as a decorative stitch 21 ...

Page 24: ... C NOTE Thread used should be the same color as material used SHELL STITCH SET YOUR SEWING MACHINE AS PER FOLLOWING TABLE This can be used for sewing a picoted edge on a light material 1 Set the machine as for blind stitch 2 Sew material on bias placing material under the presser foot so that straight stitches are sewn on seam line and zigzag stitches are sewn slightly over seam edge 3 The SHELL S...

Page 25: ...sew 5 to 6 stitches and stop the machine when the needle is in the material at the left side of the row Step C 1 Lift the presser foot slightly and set the feed dog knob to Up 2 Raise the needle and set the zigzag width lever to 2 3 Sew row to predetermined length 4 Stop the machine when the needle is in the material at the left side of row Step D 1 Raise the needle and set the feed dog knob to Do...

Page 26: ...aterial to be repaired 2 Sew both edges of tear together 3 Use satin stitch to strengthen and secure ends of tear as in illustrations ATTACHING LACE SET YOUR SEWING MACHINE AS PER FOLLOWING TABLE 1 Place lace under material edge letting it overlap inch 6 mm 2 Place under presser foot and sew 24 ...

Page 27: ...carefully 3 Cut away the surplus material close to the design 4 Remove basting CORDING SET YOUR SEWING MACHINE AS PER FOLLOWING TABLE 1 In accordance with thickness of cord being used set zigzag width lever 2 Place cord on fabric to be sewn 3 Lower presser foot and sew using zigzag stitch Guide cord by hand to where you desire it 25 ...

Page 28: ...dle and lower presser bar 5 Pull lower thread up through the material at starting position by turning balance wheel and holding both threads 6 Hold the hoop with thumb and forefinger of both hands while pressing the material with middle and third fingers and supporting the outside of hoop with smaller finger 7 Start sewing moving hoop lightly along the lettering with even rate of speed while contr...

Page 29: ...edle and lower presser bar 5 Pull lower thread up through material 6 Stitch outline of design by removing embroidery hoop accordingly 7 To fill in design stitch from outline of design to inside and from inside to edge of outline alternately until design is completely filled in Keep stitching close together NOTE A long stitch is made by removing embroidery hoop rapidly and a short stitch is made by...

Page 30: ...6 Turn zigzag width lever to 0 7 Sew approximately three stitches in one of the holes in the button to secure it 8 Remove work and cut threads BUTTON SEWING WITH THREAD SHANK For heavier material use the following method to sew on buttons 1 Place a needle on the button as shown in illustration and then sew on button as you would regularly see above 2 When removing work from machine leave a long up...

Page 31: ...peat this motion until the portion to be darned is filled with parallel lines of stitching CLOTH GUIDE The cloth guide helps to make straight and parallel stitches follow the edge of the material To attach the cloth guide place it over two holes to the right of the needle plate in the sewing machine bed Place thumb screw through the guide slot adjusting the guide for the desired distance and faste...

Page 32: ...t cut off angel into foot opening 3 Pull material by hand from the back of the presser foot Make sure the needle is positioned over material Lower presser foot 4 Make sure upper and lower threads are placed behind presser foot 5 Sew at medium speed Guide the material by hand through the presser foot opening NOTE With zigzag width lever set a 3 zigzag narrow hemming can be done following the above ...

Page 33: ...n zipper foot by loosening thumb screw and sliding zipper foot to left SET YOUR SEWING MACHINE AS PER FOLLOWING TABLE 1 Lower needle into side notch located on presser foot right or left 2 Tighten thumb screw to lock presser foot into position 3 Fold edge of material inch 2cm and place zipper under folded portion 4 By guiding zipper foot along the zipper teeth you will stitch close to edge of zipp...

Page 34: ...etaining ring 5 Remove hook by grasping center post of hook NOTE When needle is lowered hook cannot be removed CLEANING SHUTTLE RACE 1 Remove accumulated lint and thread from the retaining ring hook driver and race body with brush 2 A cloth dampened with machine oil should be used to wipe shuttle race clean 3 Clean shuttle hook in the same manner as above 4 Reassemble CLEANING FEED DOG 1 Take out ...

Page 35: ...N ONE HOUR PER DAY IF MACHINE IS USED MORE OFTEN OIL EVERY DAY NOTE If machine has not been used for along period of time oil tends to coagulate and operation of machine will not be smooth To ensure best operation in such a case apply a small amount of benzine to oiling points as noted in diagram For motor One or two drops of oil twice a year is recommended 33 ...

Page 36: ...ad is wrong IF MATERIAL SHOULD PUCKER 1 Thread tension is too tight 2 Threading is not correct 3 Thread is caught by something 4 Lower thread is unevenly wound on bobbin IF UPPER THREAD BREAKS 1 Upper threading is not correct 2 Upper thread is too large for needle eye 3 Upper thread tension is too tight 4 Needle is inserted incorrectly IF LOWER THREADS BREAKS 1 Lower thread is entangled in shuttle...

Page 37: ..._________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ___...

Page 38: ..._________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ____________________________________________________ ___...

Page 39: ...eferrals of customers like you Many homes have sewing machines but their manuals became lost or damaged We are here 24 7 on the Internet at http www mastersewusa com We have Instructional manuals service manuals parts lists and instructional videos for many industrial and consumer sewing machines We assist owners of older Singer sewing machines by using their machines serial number and converting ...

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