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- Baby Lock
- Sewing Machine
- Diana BL480A
- Instruction And Reference Manual
Baby Lock Diana BL480A Instruction And Reference Manual
Summary of Diana BL480A
Page 2: Preface
Thank you for your purchase of this combination overlock, chain stitch and cover stitch machine. This machine, that is intended for household use will provide you with excellent performance in sewing from light to heavy material (lawn to denim). Please refer to this instruction manual for proper use...
Page 3: Warning
2 “important safety instructions” when using overlock machine, basic safety precautions should always be followed, including the following. 1. Do not allow to be used as a toy. Close attention is necessary when the sewing machine is used by or near children. 2. Use this overlock machine only for its...
Page 4
Table of contents 1. ........................................................ Principal parts. 2. .......................................... Accessories................... 3. ................................................. Needle information. 4. ....................................... How to open ...
Page 5
1. Principal parts 1. Thread antenna 2. Handle 3. Left needle thread tension fine tuning (red) 4. Right needle thread tension fine tuning (yellow) 5. Upper looper thread tension fine tuning (green) 6. Lower looper thread tension fine tuning ( ) blue 7. Chain stitch looper thread tension fine tuning ...
Page 6
20. Presser bar lifter and tension release 21. Differential feed adjusting dial 22. Width adjustment dial 23. Foot pressure adjusting dial 5 23 20 21 22 24 26 24. Knife cover 25. Seam guide plate 26. Seam width finger lever r n 26 25.
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1 2 3 4 5 6 7 8 9 13 14 10 6 12 2. Accessories accessories are contained in the accessory case 1. Screw driver (large size) 2. Knife (movable) 3. Spool cap(s) 4. Thread net(s) 5. Oiler 6. Allen wrench (small) 7. Tweezers 8. Needle set 9. Brush 10. Seam guide plate 2-thread converter 11. 3. Needle in...
Page 8
7 on off 2 1 1 2 1 2 3 4 1 2 3 4 1 2 3 4 5 6 7 8 be sure to turn off power switch. Push the cover to the right as far as it will go. Pull cover down toward you. Be sure front cover is closed when sewing. Upper looper moveable upper knife presser foot fixed lower knife lower looper chain/cover looper...
Page 9
8 insert the waste tray under the looper cover. Be sure the left side of clean pocket is mounted near the cutter where the scraps drop. To remove, hold the as shown and waste tray pull it outward. Replacement removal polarized plug information (for u.S.A. & canada only) 7. Removal and replacement of...
Page 10
When using synthetic threads that easily spill off the cone, slip the thread net furnished with the machine over the thread from the bottom of the cone leaving the thread end hanging free at the top as shown on the right. Take out the thread antenna from the top of styrofoam, and insert it as shown ...
Page 11
10 open front cover (page 7). Pull the movable knife holder to the right as far as it will go. Turn the holder counter clockwise until the knife clicks into the locked position. Be sure to turn off power switch. Open cover. Front pull the movable knife holder to the right as far as it will go. Turn ...
Page 12
11 when not threading the upper looper, the 2-thread converter must be engaged into the upper looper eye. Be sure to turn off power switch straddle the square part of the converter over the upper looper and lower the converter till it lightly snaps into position. See illustration. To disengage the 2...
Page 13
R n r n 12 11. Standard overlock and rolled hem stitching to sew rolled hem to sew standard overlock set seam width finger lever n to move seam width finger to standard overedge sewing position. Set seam width finger lever to r to retract the seam width finger and set it for rolled hem. Note: as it ...
Page 14
Attention: left, middle and right cover stitch needle thread b flat surface to the rear b a c e d d overedge left needle overedge right needle cover stitch right needle cover stitch middle needle / chain stitch needle cover stitch left needle right overedge needle thread chain stitch needle thread l...
Page 15
C l c l 1 2 3 4 5 3 2 4 1 4 5 3 2 1 4 2 1 3 chain stitch overlock 14 tension color code: threading diagram sequence: 13. Threading the machine threading diagram sequence: tension color code : a color coded threading diagram is located inside the front cover for quick reference. Thread the machine in...
Page 16
15 3 3 2 2 8 6 7 9 5 4 2 3 1 1 thread the top cover thread guide by pulling the thread towards the left until it slips under guide. Then pull thread along the right side of pretension disc as illustrated. While holding thread with fingers, pass it between the tension discs and pull thread down to ma...
Page 17
9 8 9 5 4 8 6 7 10cm (4") 2 2 9 1 6 8 7 3 10 4 5 2 1 c l 16 open the front cover and thread the lower looper as indicated in steps 1 through 10. Thread the balance of the upper looper area of the machine following the green color coded thread guides. Note: use tweezers provided in the accessory case...
Page 18
17 thread the looper eye (a) from front to back. Pull about 10cm (4 inches) of thread and position into v cutout (b) on threader. Firmly hold thread tail with left hand and pull threader lever (c) up to place thread into correct position (d) for sewing. Note: use tweezers provided in the accessory c...
Page 19
Chain and cover stitch looper open the front cover and thread the chain stitch/ cover stitch looper as indicated in steps 1 through 11. 3) threading the (purple) 18 3 l c 1 2 3 4 5 6 7 8 9 10 11 1 2 3 2 while holding thread with finger, pass it between the tension discs and pull thread down to make ...
Page 20
10cm (4") 9 11 9 4 8 10 5 6 7 c b a d 5 8 4 3 2 7 6 1 19 thread the right needle as indicated in steps 1 through 9. Thread the looper area of the machine following the purple color-coded thread guides 4~11. - raise presser foot to release tension discs. Note: use the tweezers provided in the accesso...
Page 21
8 5 7 4 6 9 2 1 3 3 2 20 while holding thread with finger, pass it between the tension discs and pull thread down to make certain it is properly located in between the tension discs. 3 thread the top cover thread guide by pulling the thread towards the left until it slips under guide. Then pull thre...
Page 22
21 thread the eye of the right needle from front to back. Draw about 10cm (4 inches) of thread through needle eye toward the rear of machine and place thread to the back, under the presser foot. Note: use tweezers provided in the accessory case to aid in threading the looper. 5) threading the (red) ...
Page 23
22 thread the eye of the center needle. Note: use of tweezers in the accessory case will make needle threading easy. The position of the thread must be behind the thread guide for overlock stitching. Draw about 10cm (4 inches) of thread through needle eye to hang free. Place the thread to the back, ...
Page 24
2 9 3 1 3 6 7 8 5 4 2 1 3 2 23 (1) threading the ( c on needle clamp) 6) threading the cover stitch needles cover stitch left needle (red) thread the cover stitch left /chain stitch needle as indicated in steps 1 through 9. - raise presser foot to release tension discs. While holding thread with fin...
Page 25
24 note: slide thread into rear slot on thread guide 5 and slot of take-up lever cover 6. Then slip thread into left slots of thread guides 7 and 8. Before threading eye of needle, make sure thread is in front of thread guide located on the bottom of the needle clamp, for cover stitch and for chain ...
Page 26
2 1 3 6 4 9 2 3 8 7 5 25 note: before threading eye of needle, make sure thread is in front of thread guide located on the bottom of the needle clamp for cover stitch and for chain stitch. While holding thread with finger, pass it between the tension discs and pull thread down to make certain it is ...
Page 27
2 1 6 4 5 7 8 3 2 1 10cm (4") 9 2 9 cover stitch right needle (green) 26 (3) threading the (e on needle clamp) thread the eye of the needle. Middle draw about 10cm (4 inches) of thread through needle eye to hang free. Place the thread to the back, and slightly to left under the presser foot. 9 threa...
Page 28
27 note: before threading eye of needle, make sure thread is in front of thread guide located on the bottom of the needle clamp for cover stitch. 3 10cm (4") 9 8 5 7 4 9 3 6 while holding thread with finger, pass it between the tension discs and pull thread down to make certain it is properly locate...
Page 29
28 to easily change thread type or color, clip thread near the spool, and remove old spool of thread. . Place new thread on stand. Square knot. Clip thread tails to 2~3cm (1 inch) length. If clipped too short, threads may come untied. Firmly pull both threads to test knot security. Tie new thread an...
Page 30
29 (3/8") 9.8 mm ne dle e 7.8 mm chain stitch (5/16") left ne dle e (13/64") 7 mm (17/64") 5 mm right ne dle e 3 mm (1/8") 5 mm (3/16") needle 8.8 mm chain stitch (11/32") (10/64") (15/64") left ne dle e right ne dle e 6.0 mm 4.0 mm overlock seam width can be adjusted from narrow (using right needle...
Page 31
30 the presser foot pressure of this machine is pre-adjusted at the factory to suit the sewing of medium weight fabrics. Most of the materials do not require adjustment of presser foot pressure. However, there are some instances where adjustment is necessary, such as when sewing lightweight and heav...
Page 32
31 differential feed is a system which "stretches" or “gathers" the fabric, when the amount of feed of front feed dogs in relation to the rear feed dogs is changed. The differential feed ratio ranges from 1:0.6~1:2.0. Adjustment is made by means of the differential feed adjusting dial pictured at ri...
Page 33
1.5 n 1.5 2.0 0.6 0.8 n 32 to sew a seam, apply gentle tension to the fabric by holding the seam lightly in front and back of the presser foot. Note: if amount of "stretch" is not correctly set in relation to the fabric being sewn, the fabric is apt to shift away from the needle resulting in imprope...
Page 34
33 note: the following instructions do not apply to cover stitch. For instructions on cover stitch, see page 48 "how to sew a cover stitch." when the machine is completely threaded, bring all of the threads across the needle plate and slightly to the left under the presser foot. Hold the threads and...
Page 35
This machine is capable of producing various types of stitches according to the combination of auto tension selected, needle positions, threading methods, and the use of convertible right looper/converter. Stitch type reference page 34 39 40 41 42 43 44 45 atd : auto tension dial selected atd: d atd...
Page 36
Atd : auto tension dial selected atd: i atd: a atd: b atd: k atd: h atd: j atd: c stitch type reference page 35 46 47 50 51 54 47 50 8. 4-thread chain stitch- 2-thread overlock 9. 5-thread chain stitch- 3-thread overlock 10. Cover stitch 11. Triple cover stitch (5.6mm) 12. 3-thread rolled hem (4.0mm...
Page 37
36 depending on the needle positions used, this machine can sew 2-thread and 3-thread standard width 4 mm overedge and a 6 mm wide overedge seams. Also, for overedging heavyweight fabrics, the seam width can be increased still more by turning the overedge seam width adjustment dial. (see page 29) 6....
Page 38
Atd: auto tension dial selection sl: stitch length df: differential feed l / c: upper looper driving clutch position stitch type tension dial selected : as select atd option, the tension dial are set automatically. *when option 2, 3, 6, 8 selected, use converter. *when option 1, 10, and 11 selected,...
Page 39
38 knife cover seam guide plate chain stitch needle see page 10 for instructions on placing upper knife in nonworking position. Turn handwheel till drive shaft is at its most right position. Push clutch button to the left and up for cover stitch / chain stitch. Caution: be sure to turn off the power...
Page 40
39 medium weight fabric blue yellow green red purple tension dial note: these are suggested tension settings only. Tension settings may be effected by: 1) type and thickness of fabric 2) needle size 3) size, type and fiber content of thread stitch length for chain stitch should be set at over 2mm. W...
Page 41
Use 2 ~ 4 n l converter 40 set shown at right auto tension dial to d or g and test sew on a sample of your fabric. Note: these are suggested tension settings only. Tension settings may be effected by : 1) type and thickness of fabric 2) needle size 3) size, type and fiber content of thread when the ...
Page 42
Underside underside lower looper thread needle thread lower looper thread topside needle thread topside set auto tension dial to e and test sew on a sample of your fabric. Shown at right note: these are suggested tension settings only. Tension settings may be effected by : 1) type and thickness of f...
Page 43
N/a needle thread needle thread underside topside underside lower looper thread lower looper thread upper looper thread topside needle thread underside lower looper thread upper looper thread upper looper thread topside needle thread upper looper thread underside topside lower looper thread 42 note:...
Page 44
N/a 43 5) 3-thread flatlock needle thread upper looper thread needle thread upper looper thread topside underside lower looper thread topside underside needle thread lower looper thread needle thread needle thread topside upper looper thread lower looper thread needle thread underside upper looper t...
Page 45
Left needle thread right needdle thread topside lower looper thread underside left needle thread right needdle thread topside lower looper thread underside left needle thread right needdle thread topside lower looper thread underside 44 set auto tension dial to g test sew on a sample of your fabric....
Page 46
Topside 45 when the right needle thread tension is too loose; fine tuning lever toward the “+”. -turn the right needle thread tension (yellow) how to balance 7) 4-thread mock safety stitch overlock left needle thread right needle thread upper looper thread topside lower looper thread underside left ...
Page 47
46 converter 8) 4-thread chain stitch-2-thread overlock overedge needle thread chain stitch needle thread lower looper thread topside chain stitch looper thread underside overedge needle thread chain stitch needle thread lower looper thread topside chain stitch looper thread underside overedge needl...
Page 48
47 when the chain stitch needle thread tension is too loose; -turn the chain stitch needle thread tension fine tuning lever (red) toward the “+”. -or, turn the chain stitch looper thread tension fine tuning lever (purple) toward the “-”. 9) 5-thread chain stitch 3-thread overlock overedge needle thr...
Page 49
C e d a b cover stitch middle needle (d) 1 ( ) 1" 25mm 2 3 4 2 6 5 48 this machine can produce a 3-thread 5.6 mm wide bottom cover stitch. The cover stitch can be used for covering, binding or top-stitching necklines and for hemming the bottom, of t-shirts and sweat suits, etc. In addition to flat j...
Page 50
49 additional information about cover stitch at start of sewing at end of sewing raise presser feet. Turns the handwheel toward you one circle (counter clockwise) ,then turns handwheel one circle back. (clockwise) pull out the fabric lightly to rear of machine and cut the threads to take out the fab...
Page 51
Looper thread underside cover stitch left needle thread topside looper thread cover stitch underside underside cover stitch right needle thread cover stitch right needle thread underside looper thread cover stitch cover stitch right needle thread cover stitch topside topside cover stitch left needle...
Page 52
N~4 r c n/a cover stitch underside cover stitch middle needle thread looper thread underside cover stitch left needle thread topside cover stitch right needle thread left needle thread topside cover stitch cover stitch looper thread middle needle thread cover stitch middle needle thread cover stitch...
Page 53
Securing the seam end 52 since the seams formed by cover stitch unravel when the looper thread is pulled out at the end of sewing, secure the seam end in the following manner. When sewing through to the edge of fabric, among the threads coming out of the fabric edge, knot the needle threads (2 or 3 ...
Page 54
R n r 53 rolled hemming is done by rolling and overedging the fabric edge. Light weight fabrics such as lawn, voile, organdy, crepe, etc. Perform the best. Rolled hemming is not suited for heavy or stiff fabrics. Note: rolled hemming can only be performed with the right needle. Remove the left needl...
Page 55
R 1~2 l n/a upper looper thread lower looper thread needle thread topside underside upper looper thread lower looper thread needle thread needle thread topside underside 54 set auto tension dial to a shown at right and test sew on a sample of your fabric. Note: with wooly nylon and the needle and lo...
Page 56
R 1~2 l use converter r 1~2 l use converter converter lower looper thread needle thread topside underside 55 set auto tension dial to e shown at right and test sew on a sample of your fabric. Note: with wooly nylon and the needle with lightweight regular thread. For a beautiful rolled hem, thread th...
Page 57
To secure the rolled hem thread chain additional information about rolled hemming 56 hold the thread chain when you begin sewing to keep it from curling into the seam. Apply a small drop of liquid seam sealant to the end of the seam. Allow to dry, then cut the chain close to the stitches. Note: test...
Page 58
Lower looper thread needle thread underside upper looper thread topside needle thread a flatlock stitch is achieved by adjusting the tension of the 2-thread or 3-thread overlock stitch, sewing the seam, and then pulling the fabric apart to flatten the seam. The flatlock stitch can be used as a const...
Page 59
2 1 58 place the movable upper knife in the nonworking position (page 10). The fabric is not trimmed on this stitch. Fold fabric wrong sides together. Position the fabric so the seam is sewn with part of the stitch extending off the fabric. Pull on opposite sides of the stitch to flatten. The tensio...
Page 60
1 2 59 4 3 how to sew an overlock blind hem the excess fabric is trimmed and the hem is sewn and the raw edges are overlocked in one operation. The overlock blind hem is best suited for sewing knit wear. It provides a durable finish that is almost invisible. Use right needle and adjust machine for a...
Page 61
Turning square corners 60 cut out approximately 2cm (51/64 inch) from the corner, in line with the overedge seam edge. Sew one stitch beyond point (a) and stop. Raise needle and presser foot. Pull the fabric to the rear of the machine just enough to release the thread caught on the finger of the thr...
Page 62
61 insert pins to the left of the presser foot. The pins will be easy to remove and are away from the cutting action of the knives. Thread a large eye, hand sewing needle (such as a tapestry needle) with the thread chain. Insert the needle into the end of the seam to secure thread. Note: to secure a...
Page 63
62 inserting twill tape while overedge sewing will stabilize the seam. Insert the tape through the hole in the front of the foot. Position the tape under the foot to the back of the machine and sew the garment seam. The tape is attached as the seam is sewn. Place the movable upper knife in nonworkin...
Page 64
63 clean the lint from the looper and knife area often with a dry lint brush. Danger: before cleaning your machine, disconnect power line plug from the wall receptacle. The oiling points shown in the diagram, should be oiled periodically. Note: use only sewing machine oil. Do not use any other oil o...
Page 65
B c b a 64 the knife should be changed when it moveable becomes dull. The knife can be replaced according to moveable the directions provided, however if there are any difficulties experienced, consult your dealer to make the replacement. Be sure that the power line plug is disconnected from the ele...
Page 66
Light cover screw replace remove replace remove 65 light bulb is available at your local retailer. Take old bulb to the retailer and ask for same bulb. If voltage indicated on the electrical rating plate of your machine is 120v, ask for light bulb conforming to following specification. - bayonet typ...
Page 67
A c 66 the following optional presser feet specially prepared for this machine are available at your local retailer. Note: do not use presser feet made for other machines. Use of such presser feet may result in interference with the needle and knife and can be hazardous. The snap-on type presser foo...
Page 68
67 this foot is used for attaching elastic tape to the garment while the amount of strech can be adjusted and remain uniform. This foot is for sewing cuffs on knit fabrics, skirt and trouser seams where seam should not be visible. This foot is most suited for gathering when sewing tiered skirts, yok...
Page 69
31. Troubleshooting chart 68 problem fabric does not feed well needle breaks thread breaks stitch skip irregular stitches fabric puckers irregular trimming fabric jams machine does not operate page 29 30 30 13 33 13 13 14~27 28 13 6 69 32~48 6 13 13 13 14~27 30 69 39~48 28 14~27 39~51 28 69 29 30 64...
Page 70
Type of fabric hax1 / elx705 woven lightweight cotton: #100 crepe, etc. Spun: #80 ~ #90 polyester: #80 ~ #100 medium weight cotton: #60 ~ #80 gabardine, broadcloth, etc spun: #60 ~ #80 polyester: #60 ~ #80 heavy weight cotton: #40 ~ #60 oxford, denim, tweed, serge,corduroy polyester: #50 ~ #80 knit ...
Page 71
Item sewing speed 1~4 mm (standard: rolled hemming 1-2, ordinary overedge n=2.5) differential feed ratio rolled hemming 1.5 mm, ordinary overedge 3.0 ~ 9.8 mm (standard 4 mm) two needles: 2.8 mm (narrow), 5.6 mm (wide) triple needles: 5.6 mm 27 mm 4.5 mm hax1 (130/705h) or elx705 ( #14 or #11) 2~5 m...