Janome JNH720 Instruction Manual

INSTRUCTION BOOK

Model JP720

IMPORTANT SAFETY INSTRUCTIONS

When using an electrical appliance, basic safety precautions should always be followed, including the followings: Read all instructions before using this appliance.

DANGER— To reduce the risk of electric shock:

1. An appliance should never be left unattended when plugged in. Always unplug this sewing machine from the electric outlet immediately after using and before cleaning.

WARNING— To reduce the risk of burns, fire, electric shock, or injury to persons:

1. Do not allow children to play with the machine. The machine is not intended for use by children or infirmed persons without proper supervision. Do not allow to be used as a toy. Close attention is necessary when this sewing machine is used by or near children.

2. Use this appliance only for its intended use as described in this owner’s manual. Use only attachments recommended by the manufacturer as contained in this instruction book.

3. Never operate this sewing machine if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or dropped into water. Return this sewing machine to the nearest authorized dealer or service center for examination, repair, electrical or mechanical adjustment.

4. Never operate the appliance with any air opening blocked. Keep ventilation openings of this sewing machine and foot controller free from accumulation of lint, dust and loose cloth.

5. Never drop or insert any object into any opening.

6. Do not use outdoors.

7. Do not operate where aerosol (spray) products are being used or where oxygen is being administered.

8. To disconnect, turn all controls to the off (“O”) position, then remove plug from outlet.

9. Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.

10. Keep fingers away from all moving parts. Special care is required around the sewing machine needle.

11. Always use the proper needle plate. The wrong plate can cause the needle to break.

12. Do not use bent needles.

13. Do not pull or push fabric while stitching. It may deflect the needle causing it to break.

14. Switch this sewing machine off (“O”) when making any adjustment in the needle area, such as threading the needle, changing the needle, threading the bobbin or changing the presser foot, and the like.

15. Always unplug this sewing machine from the electrical outlet when removing covers, lubricating, or when making any other adjustments mentioned in this owner’s manual.

SA VE THESE INSTRUCTIONS

The design and specifications are subject to change without a prior notice.

KNOW Y OUR MA CHINE

Name of Parts ...........................................................2

Setting the Spool Pin.................................................2

Standard Accessories ............................................... 3

Extension Table.........................................................3

GETTING READY TO SEW

Connecting the Power Supply .................................. 4

Using the start/stop button........................................4

Using the foot control................................................ 4

Controlling Sewing Speed ........................................5

Speed control slider.............................................5

Foot control.......................................................... 5

Function Buttons.......................................................6

Start/stop button...................................................6

Reverse button ....................................................6

Auto-lock button................................................... 6

Needle up/down button........................................ 6

Stitch width adjusting button................................ 7

Stitch length adjusting button ..............................7

Direct pattern selection buttons...........................7

Dropping the Feed Dog ............................................8

Changing the Presser Foot....................................... 8

Detaching and Attaching the Foot Holder.................8

Raising and Lowering the Presser Foot ...................9

Balancing Thread Tension ........................................ 9

Changing Needles .................................................. 10

Needle and Thread Chart........................................10

Winding the Bobbin................................................. 11

Removing the bobbin......................................... 11

Setting the spool ................................................ 11

Threading for bobbin winding ............................ 12

Additional spool pin ........................................... 12

Inserting the bobbin ...........................................13

Threading the Machine ...........................................14

Needle Threader ..................................................... 15

Drawing Up the Bobbin Thread .............................. 16

UTILITY STITCHES

Overcasting with Zigzag Stitch ............................... 22

Multiple Zigzag Stitch (Tricot Stitch) ....................... 22

Buttonholes ............................................................. 23

Square buttonhole ............................................. 23

Altering the buttonhole width ............................. 26

Altering the buttonhole stitch density................. 26

Double layer buttonhole..................................... 26

Corded buttonhole ............................................. 27

Auto buttonhole.................................................. 28

Button Sewing......................................................... 29

Zipper Sewing ......................................................... 30

Blind Hemming........................................................ 32

DECORATIVE SEWING

Applique .................................................................. 33

Patchwork ............................................................... 33

Smocking ................................................................ 34

Correcting Distorted Stretch Patterns..................... 35

CARE AND MAINTENANCE

Cleaning the Hook Race and Feed Dogs............... 36

Replacing the Bobbin Holder.................................. 36

Problems and Warning Signals .............................. 37

Troubleshooting ...................................................... 38

BASIC STITCHES

Straight Stitch ......................................................... 17

Changing sewing direction ................................17

Securing a seam................................................ 17

Altering the stitch length .................................... 18

Altering the needle drop position.......................18

Variety of Straight Stitches

and Recommended Feet ................................... 20

Zigzag Stitch ...........................................................21

Altering the stitch width......................................21

Altering the stitch length .................................... 21

@44

KNOW Y OUR MACHINE

Name of Parts

q Direct pattern selection buttons w Indicator window e Bobbin winder stopper r Bobbin winder spindle t Spool pin (included in accessory bag) y Bobbin winding thread guide u Thread guide i Thread take-up lever o Tension regulating dial !0 Face plate !1 Thread cutter !2 Needle threader !3 Needle plate !4 Extension table (accessory storage) !5 Hook cover plate !6 Hook cover plate release button !7 Speed control slider !8 Stitch width adjusting button !9 Stitch length adjusting button @0 Start/stop button @1 Reverse button @2 Auto-lock button @3 Needle up/down button @4 Foot holder @5 Needle clamp screw @6 Needle @7 Zigzag foot A @8 Carrying handle @9 Hole for additional spool pin #0 Hand wheel #1 Stitch balance adjusting dial #2 Power switch #3 Machine socket #4 Power inlet #5 Drop-feed lever #6 Free arm #7 Buttonhole lever #8 Presser foot lifter

Setting the Spool Pin

Insert the spool pin into the hole as shown. (The spool pin is in the accessory bag.)

q Spool pin w Setting hole

Standard Accessories

qw e

q Needles w Bobbin e Screwdriver r Seam ripper t Spool holder y Spool pin u Additional spool pin i Felt o Satin stitch foot !0 Automatic buttonhole foot !1 Zigzag foot A (set on the machine)

Instruction book

Power supply cord

Foot control

Extension T able

The extension table provides an extended sewing area and can be easily removed for free arm sewing. The accessories can be stored in the table.

Detaching the table:

Pull the table away from the machine, as illustrated.

Attaching the table:

Push the extension table, inserting the tab into the slot until the table snaps into the machine.

q Extension table w Tab e Slot r Accessory storage

Free arm sewing

Free arm sewing is useful for darning socks or mending knees, elbows or areas of wear in children’s clothes.

GETTING READY TO SEW

Connecting the Power Supply

NOTE:

Before connecting to the power supply, make sure the voltage shown on the machine conforms to your electrical power.

Using the start/stop button

Turn off the power switch. Insert the machine plug into the power inlet. Insert the power supply plug into the wall outlet. Turn on the power switch.

q Start/stop button w Power switch e Machine plug r Power inlet t Power supply plug y Wall outlet

Using the foot control

Turn off the power switch. Insert the foot control plug into the machine socket. Insert the machine plug into the machine socket. Insert the power supply plug into the wall outlet. Turn on the power switch.

q Power switch w Foot control plug e Machine socket r Machine plug t Power inlet y Power supply plug u Wall outlet

NOTE:

The start/stop button does not work when the foot control is connected.

NOTE: After turning off the power, wait for 3 seconds to turn it on again.

When the power is turned on, the indicator window will show a test pattern then will indicate 01.

WARNING:

While in operation, always keep your eyes on the sewing area, and do not touch any moving parts such as the thread take-up lever, handwheel or needle. Always turn off the power switch and unplug from the power supply:

- when leaving the machine unattended.

- when attaching or removing parts.

- when cleaning the machine. Do not place anything on the foot control, otherwise the machine will run intermittently.

Operating Instructions:

The symbol "O" of a switch indicates the "off" position of a switch. For appliances with a polarized plug (one blade wider than the other). To reduce the risk of electric shock, this plug is intended to fit in a polarized outlet only one way. If it does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. Do not modify the plug in any way.

Controlling Sewing Speed

Speed control slider

You can limit the maximum sewing speed with the speed control slider according to your sewing needs.

To increase sewing speed, slide it to the right. To decrease sewing speed, slide it to the left.

Foot control

Pressing on the foot control can vary sewing speed. The harder you press the foot control, the faster the machine runs.

NOTES:

The machine runs at the maximum speed set by the speed control slider when the foot control is fully depressed. Keep the foot control free from accumulation of lint, dust and loose cloth. Do not place anything on the foot control.

Operating Instructions:

Foot controller Model 21249 is for use with sewing machine model JP720.

Function Buttons

q Start/stop button

Press this button to start or to stop the machine. The machine will run slowly as long as this button is pressed, and will start running at the speed set by the speed control lever, or stop when the button is released.

NOTE:

The start/stop button does not work when the foot control is connected.

w Reverse button

When sewing the stitch pattern #01, #05 or #09 the machine will sew in reverse as long as the reverse button is pressed. If you press the reverse button when sewing any other stitch, the machine will immediately sew locking stitches and automatically stop.

If you press the reverse button when stitch pattern #01, #05 or #09 has been selected and the foot control is not connected, the machine will start

sewing in reverse as long as the button is pressed and the machine will stop when the button is released.

e Auto-lock button

When stitch pattern #01, #05 or #09 has been selected, the machine will immediately sew locking stitches and automatically stop when the auto-lock button is pressed. When sewing any other stitches, the machine will sew locking stitch at the end of the pattern being sewn and automatically stop.

r Needle up/down button Press this button to bring the needle up or down. The machine will stop with the needle up or down depending on the needle position determined by this button.

t Stitch width adjusting button

When pressing this button,the stitch width of the selected pattern will be indicated and the green light on the top left will light up.

To alter the stitch width, press on the "+" or "–" sign. The stitch width can be altered while stitching .

y Stitch length adjusting button When pressing this button,the stitch length of the selected pattern will be indicated and the green light on the bottom left will light up. To alter the stitch length, press on the "+" or "–" sign. The stitch length can be altered while stitching.

Direct pattern selection buttons

There are 4 buttons for selecting stitch patterns. Press one of the buttons until the pattern number of the desired stitch pattern is indicated.

u Button 01 will select the patterns #01 to #05. i Button 06 will select the patterns #06 to #10. o Button 11 will select the patterns #11 to #15. !0 Button 16 will select the patterns #16 to #20.

NOTE:

When selecting the pattern, raise the needle to its highest position.

Dropping the Feed Dog

The feed dog can be lowered with the drop-feed lever for sewing on buttons etc.

Shift the drop-feed lever to the right to lower the feed dog.

Shift the lever to the left to raise the feed dog, it will return to the up position when the machine is started.

q Up position w Down position e Feed dog r Hand wheel

NOTE:

The feed dog should be in the up position for regular sewing. Turn the handwheel toward you to check if the feed dog comes up after setting the lever in the up position.

Changing the Presser Foot

CAUTION:

Turn OFF the power switch before changing the foot. Always use the proper foot for the selected pattern. The wrong foot can cause the needle to break. Do not push the lever down to prevent it from being broken.

To snap off:

Raise the needle and presser foot. Press the lever on the back of the foot holder and the foot will drop.

q Lever

To snap on:

Place the presser foot so the pin on the foot lies just under the groove of the foot holder. Lower the foot holder to lock the foot in place.

w Groove e Pin

Each foot is marked with a letter for identification.

r Identification Letter

Detaching and Attaching the Foot Holder

WARNING:

Turn OFF the power switch before detaching or attaching the foot holder.

To detach:

Raise the presser bar and turn the setscrew counterclockwise to remove the foot holder.

q Setscrew w Foot holder

To attach:

Align the hole in the foot holder with the threaded hole in the presser bar and insert the setscrew through the hole. Tighten the setscrew by turning it clockwise.

e Hole r Threaded hole

Raising and Lowering the Presser Foot

The presser foot lifter raises and lowers the presser foot. You can raise the presser foot about 1/4" (0.6 cm) higher than the normal up position by exerting more pressure when lifting the presser foot lifter. This allows for easy removal of the presser foot and helps you to place thick fabric under the foot.

q Presser foot lifter w Normal up position e Extra lift

Balancing Thread T ension

The thread tension should be adjusted depending on the sewing materials, layers of fabric and sewing method. To adjust the thread tension, turn the tension dial.

q Tension regulating dial w Setting mark

Balanced tension:

The ideal straight stitch has threads locked between two layers of fabric. For an ideal zigzag stitch, the bobbin thread does not show on the right side of the fabric, and the needle thread shows slightly on the wrong side of the fabric.

e Needle thread r Bobbin thread t Right side of the fabric y Wrong side of the fabric

Needle thread tension is too tight:

–if the bobbin thread appears on the right side of the fabric. Loosen the needle thread tension by moving the dial to a lower number.

Needle thread tension is too loose:

–if the needle thread appears on the wrong side of the fabric. Tighten the needle thread tension by moving the dial to a higher number.

Changing Needles

WARNING:

Always make sure to turn the power switch off and disconnect the machine from power supply before changing the needle.

Raise the needle by turning the handwheel and lower the presser foot. Turn off the power switch.

z Loosen the needle clamp screw by turning it

counterclockwise. Remove the needle from the clamp.

q Needle clamp screw

x Insert a new needle into the needle clamp with the

flat side of the needle to the rear. When inserting the needle into the needle clamp, push it up against the stopper pin and tighten the needle clamp screw firmly.

w Stopper pin e Flat side

To check needle straightness, place the flat side of the needle onto something flat (a needle plate, glass etc.) The gap between the needle and the flat surface should be consistent. Never use a blunt needle.

r Gap

Needle and Thread Chart

WEIGHT Very Light

Light

Medium

Heavy

FABRIC Chiffon, Georgette, Fine Lace, Organdy

Net, Tulle Batiste, Voile, Lawn, Pure Silk, Crepe de Chine,

Sheer Crepe, Chambray, Handkerchief Linen, Gingham, Challis, Percale, Wool Crepe, Peau de Soie, Taffeta, Satin, Silk Surah, Satin-backed Crepe, Qiana

Single Knits, Jersey, Swimwear, and Tricot

Leather, Suede

Flannel, V elour , Velvet, Muslin, Velveteen, Poplin, Corduroy, Broadcloth, Linen, Chintz, Gabardine, Felt, Terry, Burlap, Quilted Fabrics

Double Knits, (synthetic and natural) Stretch Velour, Stretch Terry, Sweater Knits

Leather, Vinyl, Suede

Denim, Sailcloth, Ticking Double Faced Wool, Heavy Coating, Fake Fur,

Drapery Fabrics

TYPE of NEEDLE Universal

Ball Point Blue Tipped Needle

Universal

Blue Tipped Needle Ball Point

Wedge Point Leather Needle

Universal

Ball Point

Wedge Point Leather Needle

Denim Needle Universal

NEEDLE SIZE 9 (65)

9 (65) 11 (75)

11 (75) 12 (80)

11 (75) 11 (75)

11 (75)

14 (90)

16 (100) 16 (100)

Very Heavy

Leather, Suede

Canvas, Duck, Upholstery Fabrics Topstitching for Special Finishes

Wedge Point Leather Needle

Universal Topstitching Needle

16 (100) 18 (110)

16 (100) 14 (90)

Winding the Bobbin

Removing the bobbin

Push the hook cover plate release button to the right and remove the cover plate.

q Hook cover plate releasebutton w Hook cover plate

Lift out the bobbin.

e Bobbin

Setting the spool

Place a spool of thread on the spool pin with the thread coming off the spool as illustrated.

q Spool of thread w Spool pin

Press the spool holder firmly against the spool of thread.

e Spool holder

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