Baby Lock BL3-407, Instruction Booklet

Page 1: ...il a...

Page 2: ...adjuster Thread finder Throat Plate Lower looper thread tension adjuster Presser foot Flywheel Lower knife Side cover Base plate Rubber cushion Knife cover Needle bar thread gui For safety remove pow...

Page 3: ...s as two machines both 3 thread and 2 thread overedgers but can sew a wide range of fabrics from the thickest to the thinnest materials This instruction booklet will be your guide to correct operation...

Page 4: ...lt in place at the same time as shown in Figure 3 The bracket fixing screw washer and V belt are enclosed together in the carton Belt tension will be most suitable when the V belt bends slightly under...

Page 5: ...in Figure 5 Then put power inductive plug into the power supply socket The machine runs faster as the controller pedal is pressed down farther and slower as the pedal is let up For safety be sure to...

Page 6: ...d is also available when held by bobbin sup porter as shown in Figure 7 available separately at order 2 How to open knife cover and side cover Figure 8 Pull the knife cover knob to the right and then...

Page 7: ...sses the knot of linked thread smoothly and draw the thread till the knot comes about 10 cm past the presser foot Figure 10 Note Special care must be taken when changing needle thread Cut off the knot...

Page 8: ...ary looper and thread guide switch For 3 thread overedging the subsidiary looper and thread guide switch should be set in the positions shown in Figure 12 and Figure 13 respectivel y Handling guides f...

Page 9: ...e flywheel clockwise to bring the lower looper to the far left Thread through the lower looper thread guide and the lower looper first hole while looking through the thread f inder Then bring the lowe...

Page 10: ...referring to Figure 16 and Figure 17 Then be sure to pass the thread through the needle eye from this side out into the other side hollow side Draw out the thread about 1 0 cm away from the presser fo...

Page 11: ...the upper looper thread tension adjuster as shown in Figure 20 Position of thread tension adjuster knob When you carry out 3 thread overedging the bottom line of each tension adjuster knob should be...

Page 12: ...mes in line with the 2 marked red on the thread take up cover Loosen the needle thread tension by turning the adjuster knob till its bottom line comes up and meets the center of the red strip zone Lik...

Page 13: ...color The switch clicks when its red indicator meets the 3 marked blue on the thread take up cover as shown in Figure 25 4 Set the upper looper thread as shown in Figure 14 Page 7 5 Tighten the needl...

Page 14: ...ads are forming satisfactory blank starting stitches Then set the material to be worked on and start actual sewing lmproper thread tension balance will cause puckering and or skip stitches For good th...

Page 15: ...eedles Page 2Sl examining the seams coming out each time 3 1 Adjustment for 3 thread overedging The bottom line of each thread tension adjuster knob should be ranged within the blue stripzone on the a...

Page 16: ...read tension adjuster knob should be r anged within the red strip zone on the adjuster dial cover Figure 34 First line up the bottom lines of the both ten sion adiuster knobs with the center of the re...

Page 17: ...to normal when you work on materials of normal thickness in the normal way i e when not making cross seams Tightening this screw will dull the work of the cutting kn ives Figure 38 Upper knife holder...

Page 18: ...edle in the hole of the throat plate and then the head of the needle into the needle bar hole all the way to the end a Be sure to line up the hollow of the needle directly with the other side when you...

Page 19: ...the feed regulator dial to select the stitch length feed pitch Stitch length is longer as the number on the dial increases and shorter as it decreases Tighten the feed regulator screw firmly after se...

Page 20: ...ew Figure 46 to re set the throat plate tongue Figure 45 according to the desired new bight width which can be selected freely at any length within the range of 2 5 mm 5 mm The bight width will be gui...

Page 21: ...auxiliary screw and the lower knife clamp screw by using the attached screwdriver 9 2 How to replace the upper knife ln most cases you will not need to replace the upper looper the cutting edge of wh...

Page 22: ...special oil impregnated sintered metal How ever just one or two drops of oil will serve to increase durability if put in the places shown in Figure 52 a nd Figure 53 Figure 53 A light can be used with...

Page 23: ...too strong o lsn t the needle bent r lsn t the needle guard scratched or dam aged in any way ls the presser foot pressure proper in the strength oAre all the threads proper in the kind and thickness o...

Page 24: ...the brush is worn to approximately 3 mm in length as shown in Figure 55 2 How to replace First remove the motor Remove both brush cap screws Figure 55 and replace the old brushes with new ones NOTE U...

Page 25: ...agonal wrench for subsidiary looper Needles Lower knife Tweezers Cleaning brush Oiler capacity 30 cc Heart shaped driver for adjusting stitch length Baby net Ornamental stitch guide is available as an...

Page 26: ...olen poplin etc Spun 80 Cotton 80 Tetron gO sirk ffio DC tt Ordinary Serge garberdine flano etc Spun AO Tetron 80 60 sirk 50 DC tt q Thick Velour camel astrakhen etc Spun 00 Cotton 60 50 Tetron 60 50...

Page 27: ...Thread tension adj ustment Narrow roll overedging is available in two vari eties depending on the balance of the thread tension levels Standard This has the same seam structure as the ordi nary overed...