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9

Adjustment of Foot Pressure

It is not necessary to adjust the presser foot’s
pressure for normal sewing.

When you sew heavy or lightweight fabrics, turn the
adjusting screw:

–– clockwise for heavyweight fabric.
–– counterclockwise for lightweight fabric.

 * For normal sewing, set the adjusting screw so

that it sits 1mm below the top of the machine.

1

To decrease

2

To increase

3

Adjusting screw

4

Top of the machine

Removing the Presser Foot

1. Turn off the power switch and unplug the

machine.

2. Raise the needle and the presser foot.

3. Press the lever located on the back of the foot

holder. The presser foot will drop off.

1

Needle

2

Presser foot lifter

3

Foot holder

4

Lever

Attaching the Presser Foot

1. Turn off the power switch and unplug the

machine.

2. Place the presser foot so that the pin on the foot

lies just under the groove of the foot holder.

3. Lower the foot holder to lock the foot into place.

4. Raise the presser foot lifter to check that the

presser foot is secure.

1

Groove

2

Pin

3

Lever

1 mm

2

1

4

3

3

1

2

2

3

1

2

4

Summary of Contents for 792D

Page 1: ...INSTRUCTION BOOK...

Page 2: ...rasp the plug not the cord 10 Keep fingers away from all moving parts Special care is required around the sewing machine needle and or cutting blade 11 Always use the proper needle plate The wrong pla...

Page 3: ...ding the Lower Looper 15 Threading the Upper Looper 18 Threading the Needle on the Right 20 Threading the Needle on the Left 22 TEST STITCHING Starting Sewing 24 Finishing Sewing 24 Sewing Continuousl...

Page 4: ...17 Pressure adjusting screw 18 Presser foot 19 Needle plate setting knob 20 Thread cutter 21 Presser foot lifter 22 Needle plate 23 Upper knife release knob 24 Cutting width adjusting dial 25 Upper l...

Page 5: ...troller with the presser foot lifter up and practice controlling the speed For Your Safety While in operation always keep your eye on the sewing area and do not touch any moving parts such as the thre...

Page 6: ...ver to the right 1 Side cover Opening and Closing the Looper Cover To open A While pushing with the thumb to the right as far as it will go pull the looper cover toward you To close B Lift the looper...

Page 7: ...ol pull out the spool holder from the spool pin Then place the spool with its slit side up and put the spool holder cap on top of it 2 If the thread slips down from the spool during threading and or s...

Page 8: ...HA 1SP 14 Needle or 11 To attach the needle on the right Insert a new needle into the needle clamp with the flat side to the back until the top of the needle touches the stopper pin then tighten the n...

Page 9: ...ving the Presser Foot 1 Turn off the power switch and unplug the machine 2 Raise the needle and the presser foot 3 Press the lever located on the back of the foot holder The presser foot will drop off...

Page 10: ...ustment of Differential Feed Ratio The differential feed ratio can be altered by turning the dial The number on the dial indicates the ratio between the main and the sub feed motion 1 0 indicates the...

Page 11: ...osition 4 Close the looper cover and side cover 1 Upper knife release knob 2 Stopper pin 3 Upper Knife To Activate the Upper Knife 1 Turn off the power switch and unplug the machine 2 Open both the lo...

Page 12: ...ard setting The cutting width of this model can be adjusted approximately 3 0 to 5 0 mm from the right needle position depending upon your sewing needs or the fabric being used The cutting width shoul...

Page 13: ...Hemming Release the cutting width adjusting dial to the left gently 5 Set the upper knife to up position 6 Close the looper cover and side cover 1 Chaining finger 2 Guide line 3 Cutting width adjustin...

Page 14: ...nots are coming out from under the back of the presser foot 3 However stop drawing the needle threads when the knots reach just before the needle eye Cut the knots and thread the needle eye 4 Before s...

Page 15: ...ead through the right side thread guide from back to front A If the thread is coming out from the thread guide groove pass the thread through the thread guide hole again as shown B 1 Thread guide 2 Pa...

Page 16: ...ead guide 4 6 Lower looper thread guide 2 7 Looper thread take up lever lower 8 Lower looper thread guide 3 9 Lower looper thread guide 4 10 Turn the handwheel toward you until the lower looper comes...

Page 17: ...e thread from the right side of lower looper thread guide 5 with a pair of tweezers And draw the thread through the hole on the lower looper 10 cm 4 or more with a pair of tweezers 11 Lower looper 1 L...

Page 18: ...read guide second from the right from back to front A 1 Thread guide 2 Pass the thread through the holes in the second row from the right of thread guide plate as illustrated 2 Thread guide plate 3 Pa...

Page 19: ...ght Then pull both sides of thread 5 Pass the thread through upper looper thread guide 1 4 Upper looper thread tension dial 5 Upper looper thread guide 1 6 Pass the thread through upper looper thread...

Page 20: ...chine body inside the looper cover 1 Draw the thread through the thread guide second from the left from back to front A 1 Thread guide 2 Pass the thread through the holes in the second row from the le...

Page 21: ...ad guide and the thread take up lever cover 4 Right needle thread guide 5 Thread take up lever cover 5 Pass the thread through the needle thread guide sliding the thread from left to right 6 Pass it t...

Page 22: ...ed on the machine body inside the looper cover 1 Draw the thread through the thread guide on the left from back to front A 1 Thread guide 2 Pass the thread through the holes on the left of thread guid...

Page 23: ...e thread from right to left 6 Pass it through the needle bar thread guide from left to right 7 Thread the left needle from front to back and pull the thread about 10 cm 4 from the eye of the needle to...

Page 24: ...s illustrated leaving about 5 cm 2 thread chain from the end of the fabric 1 Thread cutter The thread cutter becomes blunt as loose threads build up Remove the loose threads collected in the thread cu...

Page 25: ...the needle 2 Put your fabric on the machine Then serge a few stitches and stop 3 Raise the presser foot and bring the thread chain to the left around and under the presser foot 4 Place the thread cha...

Page 26: ...ead tension with the tension balance dial 7 Thread tension dial 8 Setting mark 9 Loosen 10 Tighten Left needle thread tension is too loose The illustration shows sewing results when the left needle th...

Page 27: ...Upper looper thread tension dial 14 Lower looper thread tension dial Looper thread tension is out of balance 2 The illustration shows sewing results when the upper looper thread tension is too tight...

Page 28: ...needle clamp screw on the left to prevent losing the screw 1 Needle on the right 2 Needle clamp screw on the left Using the needle on the left only for wide three thread serging Turn off the power sw...

Page 29: ...t needle thread tension dial Looper thread tension is out of balance 1 The illustration shows sewing results when the lower looper thread tension is too tight and or upper looper thread tension is too...

Page 30: ...rt Organdy Georgette Lawn Crepe de chine Lining Lightweight Heavy weight Knitte dfabric Knits Tweed Coating Denim Doeskin Thick fabric Cotton No 60 80 Synthetic No 60 90 Woolly nylon For looper thread...

Page 31: ...abric Lower looper thread Upper looper thread Right side of fabric Needle thread Needle thread tension L Needle thread tension R Upper looper thread tension Lower looper thread tension Wrong side of f...

Page 32: ...y Tighten the right needle thread tension 6 Right needle thread tension dial Upper looper thread tension is too loose The illustration shows the sewing results when the upper looper thread tension is...

Page 33: ...icot edging Pull the fabric lightly to the back while sewing 1 Fabric For narrow hemming Correct tension The illustration at left shows sewing results with correct tension settings 1 Wrong side of fab...

Page 34: ...hetic No 60 80 Silk No 50 80 Buttonhole twist Light weight wool yarn Synthetic No 60 80 Silk No 50 80 Thread Machine Setting 1 Needle plate setting knob GATHERING Refer to pages 26 27 29 for thread te...

Page 35: ...Synthetic No 60 80 Silk No 50 80 Synthetic No 60 100 Silk No 50 100 Thread Machine Setting 1 Remove the needle on the left hand side 2 Needle plate setting knob Sewing Remove the needle on the left ha...

Page 36: ...Loosen the hexagonal bolt and adjust the position of the upper knife so that the edge of the upper knife overlaps 0 8 to 1 5 mm 3 64 from the edge of lower knife as illustrated Then tighten the hexag...

Page 37: ...presser foot 4 Remove the needle plate set screw and remove the needle plate 1 Needle plate 2 Needle plate set screw 5 Brush out the lint around the feed dogs to the front by using the lint brush or u...

Page 38: ...s indicated with arrows It is recommended to apply oil once a week in normal use once in ten hours in continuous use Open the side cover and apply oil Open the looper cover and apply oil Carrying the...

Page 39: ...not correctly adjusted 2 The machine is not correctly threaded 3 The needle and or the thread are not suitable for the fabric being sewn 4 The thread is not between the tension discs 1 The needle or l...

Page 40: ...from between the fabric Then slowly sew 2 or 3 stitches 2 Turn the hand wheel until the needle pierces the fabric Raise the presser foot 3 Set the differential feed dial to 1 5 2 25 Insert the arm be...

Page 41: ...the tape will become greater If you turn the thumb screw counterclockwise the elasticity of the tape will be reduced 5 Now you can adjust the lateral position of the elastic tape by loosening the atta...

Page 42: ...d attach the blind stitch foot 2 Adjust the feed dial to 4 5 Adjust according to the kind of cloth 3 Fold the cloth as in Fig 1 and iron lightly 4 Set the position of the cloth guide turning the adjus...

Page 43: ...ert some cord into the guide on the cording foot Then attach the foot to the machine and pull a little cord behind the foot 3 You must choose either the blanket stitch or the rolled hem stitch when se...

Page 44: ...t or the cording foot Use to sew decorative cording Use for decorating cloth wide cord decoration cording etc Use to help you create a constant width seam allow ance and when doing flat lock and pintu...

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Page 48: ...792 800 989 E Printed in Taiwan...

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