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FLATLOCK SEAM

Using the blind hem presser foot and disengaging the upper blade, you can sew decorative top stitching “Flatlock
Seam” as shown on the sketch.

setting controls

Set the machine controls as below.

Flatlock Seam (Correct thread tension)

Needle

Presser Foot

Right

Blind Hem

Stitch Length

2-3

Upper Blade

Disengage

Needle Plate

Standard

thread tension

Normal

Needle Thread
(Right)

Upper Looper
Thread

Lower Looper
Thread

Set tension dials for normal 3-thread overcasting.

Test Sample

Lower
Looper
Thread

Upper
Looper
Thread

Needle
Thread

1. First sew test sample for

adjusting the thread
tensions.

2. Fold fabric with wrong sides

together.

3. Adjust the plastic guide on

blind hem foot so that the
stitches just overcast the folded edge.

4. Adjust the thread tensions until the needle thread comes to folded

edge and the lower looper thread formes nearly a straight line on
the edge.

sewing

1. Fold fabric with wrong sides together.
2. Adjust the plastic guide so that the stitches hang

halfway over the folded edge.

3. Lower the presser foot and sew.

4. When stitching is completed, pull fabric flat and

press the stitches from the wrong side of fabric.

Decrease

Increase

Содержание A-LINE Lauren BL450A

Страница 1: ......

Страница 2: ...tailer or service center for examination repair electrical or mechanical adjustment 4 Never operate the sewing machine with any air openings blocked Keep ventilation openings of the sewing machine and...

Страница 3: ...THREAD TENSION 11 SETTING STITCH LENGTH 12 ADJUSTING THE DIFFERENTIAL FEED 12 SETTING THE SEAM WIDTH 12 ADJUSTING THE PRESSURE ON FABRIC 13 OVERLOCK SEWING 1 needle 3 thread 13 three thread tension 1...

Страница 4: ...Looper Thread Tension Dial Blue 4 Upper Looper Thread Tension Dial Green 5 Thread Guide and Pretension Disc 6 Right Needle Thread Tension Dial Yellow 7 Left Needle Thread Tension Dial Red 8 Pressure...

Страница 5: ...2 Upper Blade Holder 3 Upper Blade 4 Needle Plate 5 Seam Width Knob 6 Upper Looper 7 Lower Looper 8 Lower Blade 1 To unlock side cover turn lever located on left side of Extension Table towards front...

Страница 6: ...ont of the terminal box To turn power on push the front side of the switch Turning on the power lights up the stitching area The machine will not operate unless the switch is on FOOT CONTROL Model YC...

Страница 7: ...means the fineness of both needle and thread FABRICS LIGHTWEIGHT organdy voile taffeta lawn crepe MEDIUM WEIGHT gingham satin seersucker linen velveteen gabardine broadcloth HEAVY WEIGHT denim tweed c...

Страница 8: ...ar up as far as it will go 2 Rotate the Thread Guide Hanger so that the Thread Guides are right above the spool pins Stopper pegs will snap into position 3 Place the spools or thread cones on spool pi...

Страница 9: ...Bring thread straight down through the slot so that it passes between the tension discs 4 Hook thread from the left side 5 Hook thread from the right side 6 Hook thread from the bottom side and pull...

Страница 10: ...left E Hook thread from the bottom side F Hook thread from the bottom side and pull thread towards left G Turn handwheel toward you until the lower looper is in extreme left side position Pass thread...

Страница 11: ...des with red color marking on machine A C Thread same sequence as threading upper and lower looper thread D Hook thread into front opening of guide and pull thread up E Hook into guide by sliding thre...

Страница 12: ...d you until the upper looper is in the lowest position Pass thread through the looper hole Lower Looper Thread cut the needle threads near needle hole rethread the lower looper rethread the needle nee...

Страница 13: ...en sewing with 80 to 90 polyester spun threads Turning thread tension dial Increase Decrease Medium Weight Correct 4 thread tension Upper Looper Thread Left Needle Thread Right Needle Thread Bottom si...

Страница 14: ...the rear feed dog motion The front feed dog will hold back the fabric enabling the rear feed dog to take it up behind the needle without any puckering fig 12 C When sewing stretch or knit fabrics tur...

Страница 15: ...side of fabric Bottom side of fabric Lower Looper Thread 6 2 mm The pressure on the foot can be adjusted for different weight fabrics The fabric should move along smoothly and evenly without slipping...

Страница 16: ...late off and replace with Rolled Hemming Plate Be sure that thread is not caught under plate 8 Retighten the screw and replace Free Arm Cover 1 Turn power switch off 2 Turn handwheel toward you until...

Страница 17: ...s table is a guide for thread tensions when sewing with 80 to 90 polyester spun threads Needle thread is too loose Upper looper thread is too loose Lower looper thread is too loose Light Medium Fabric...

Страница 18: ...al seam known as the flatlock seam You can flatlock garments ranging from lingerie to fake fur coats When sewing with two threads you can achieve a flat bulk free seam Using it to seam fake fur fabric...

Страница 19: ...per to its lowest position 2 With your finger push back on the subsidiary looper and rotate clockwise up to disengage from the eye of the upper looper 3 Remove subsidiary looper from the upper looper...

Страница 20: ...de is adjusted by turning the screw 3 Raise the presser foot 1 Fold hem up as desired fold it back toward right side of the fabric Leave 1 to 2 cm seam allowance to the right sewing First sew a test s...

Страница 21: ...nd hem presser foot to insure even seam width NOTE When using the blind hem foot always remove the left needle 1 Unplug the machine 2 Open the front cover 3 Turn handwheel toward you until the upper b...

Страница 22: ...Sample Lower Looper Thread Upper Looper Thread Needle Thread 1 First sew test sample for adjusting the thread tensions 2 Fold fabric with wrong sides together 3 Adjust the plastic guide on blind hem f...

Страница 23: ...overlock stitching Try using various types of thread to create attractive combinations experiment with different tension adjustments to produce a variety of decorative effects examples Upper Looper Th...

Страница 24: ...ng line 2 Sew to the end of fabric and stop machine 3 Raise needle and presser foot 4 Pull fabric slightly towards the back and pull out tangled thread from Needle plate 5 Turn fabric and position the...

Страница 25: ...en it becomes dull An extra blade is provided with the accessories 1 Unplug the machine 2 Open the front cover 3 Disengage the upper blade See page 19 4 Loosen the Lower Blade Screw and take out the b...

Страница 26: ...ade Readjust stitch length Readjust differential feed Loosen thread tensions Readjust seam width Check thread tensions Clean the machine Check plug Turn on the switch CAUSE Needle inserted incorrectly...

Страница 27: ...Refer to Page 13 for Tension Adjustment Refer to Page 15 for Tension Adjustment Refer to Page 15 for Tension Adjustment Refer to Page 17 for Tension Adjustment 1 4 mm 1 4 mm 1 4 mm 1 2 mm 1 2 mm 1 4...

Страница 28: ...62180 BL450A B8...

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