HANDBOOK 1-OK MUSKY LULtc fl //c/2?c MODEL 430 4/7 / I V I, 41 I - S —
WIRING INSTRUCTION Only for the Bnt.sh merketl When changing plug wiring should be effected according to the instructIon below. Check the voltage Before connecting the sewing machine to an electrical supply ensure that the voltage marked on the rating label of the machine is the correct voltage for your electrical supply. If it is not, do not use the machine but refer back to your dealer.
Thank you very much for your purchase of an Overlock sewing machine. You have lust purchased an overlock sewing machine for sewing all kinds of fabrics——cotton, wool, rayon, tricot, jersey, knitted goods—thick or thin. You cannot be other than satisfied with its perfect and beautiful stitches and its long operating life. But, however excellent this sewing machine may be, it cannot operate to its fullest capacity unless it is handled correctly.
TABLE OF CONTENTS Names of Parts and Their Functions Direction of revolution Opening and closing the front cover Needle Changing the light bulb Operating Threading Preparation Threading under-looper Threading over-looper Threading needle Test-sewing Chaining-off Ratio chart of Sewing Material, Needle and Thread Thread Tension Correct thread tension Anexemple Sewing Pitch and Size of Bite Sewing pitch (Stitch length) Size of Bite (Stitch width) To adjust the stitch tongue Presser foot pressure Sewing To sta
Names of parts and their functions 3 -
Direction of Revolution *The motor of this machine runs in a Llockwise direction (arrow direc tion), which is the opposite direc tion to the motor of an ordinary home sewing machine. Opening and closing the front cover When threading, you will need to open the front cover. Note: When sewing, be sure to close the front cover. To open the front cover Move the knob on the front cover in the direction of the arrow and pull it open.
Needle 14) can he used with this machine. *TFX 1 (1 1 & 1 4) or DB X 1 (p9, 1 1 1 E X 1 )1 1) is mounted on the machine. To remove the needle (1) Turn the pulley clockwise by hand until the needle is raised to the highest position. (2) Loosen the needle set screw with the screw driver (turn left) and remove the needle. (NOTE) When removing the needle, hold the needle with the tweezers to avoid dropping it.
Operating * If your machine is provided with the light; Screw Changing the light bulb 1 Undo the two upper screws on the back of the machine, remove the cover and screw the light bulb out. Insert the new bulb and screw the cover in place. Use light bulbs designed for 1 5 W as indicated on the lamp holder. \ ‘\ \i \ LqhtswitcN Preparation lnsert the three -pin plug into the socket of the motor and insert the power supply plug into the elec tric outlet.
NOTES ON THE MOTOR -::The normal operating speed of this sewing machine is 1,500 stitches per nunu L, wh ch s quite fast as rompared to the normal operating speed of 300 to $00 stitches per minute of the ordinary foot-operated home sewing mar h inc. It should be noted that the motor of this sewing machine runs in the opposite direction to the motor in an ordinary home sewing machine.
Threading Preparation L Raise the spool pin right up and set it by the positioning stopper at the joint of the upper and lower sections of the pin. Make sure that the thread holders are right above the reel support.
* Incorrect threading makes sewing impossible. So set the threads correctly as shown below. To facilitate threading, there are coloured indication marks inside of this machine.
Make sure that each thread runs between the two pir Is utr I he th rud ten son d sc .
Threading needle 1 in order. Run the thi odd ft cm o 0 o 0 —‘ o 0 Pull the thread about 5 cm from the needle.
Test-sewing *Testsew after threading. (1) Place material for test-sewing well under the presser foot. (2) Hold the needle threads with your left hand, turn the pulley slowly a fcw turns in a clock wise rection with your right hand, and observe how the threads entwine themselves be fore starting sewing. Chaining-off * After test-sewing, hold the foot control depressed slightly for a while (chaining off). The pieces of thread will entwine themselves like the chain and will feed forward automatically.
______ Ratio Chart of Sewing Material, Needle and Thread Sewing Material Stitch length Thread Tension dial Needle --—5 80- 00 : SO 100 3.0- 4.0 mm Nc. 11 Cotton: 60- 100 3.0-4,0mm No. Il No.14 Cotton Fine Silk Medium 1 4 - —,-—— Cotton : 40 60 :40-60 Silk Heavy - No. 14 3.0 4.0 mm - Synthe : 30- 60 tic Cotton: 40 60 : 40 60 Silk Svnihe: 30 (sO tic - - Knit . 3.0 - No, 1] No. 14 4.0 mm - NCF F: The calibration on the tension dial is like he below igure. 2.
Thread Tension — Upper thread* rensron chat I Lower thread tension dial (for over Iooper( Lower /N thread (for under tooper( -- * Tic h cad tcn’r rn d this mach roe carl he adjusted h three thread tension ad usling knobs t the needle thread, under moper thr cad and over-looper thread. tabric, thickness of thread, The correct thread tension ariec with the kind equired in each particular case. By turning etc.
An example It the needle thread tension is weak I tens tl h ii I irren, (rk Rii If the over looper thread tension is strong or if the under looper thread tension is weak: IU’t1 ihrrd itiiei I Uni1 ‘i orr or t irhten the loss ci thread lesion (br Iifldi. looper), If the over looper thread tension is weak or if the under looper thread tension is strong: Under rhrid ooper S ;n uq ‘\_.
Sewing Pitch and Size of Bite Sewing Pitch (Stich Length) • When VoLt change the sewing pitch, ipun the cloth plate ciseF Lu scn the adjusting sco w and set the lever to the pr pur position, then tighten the adjust ng screw. Yin pitch can adjust the t nt ninimurn ti IflJ\ifltUfll ‘es ng 2 mm ntm. Size of Bite (Stitch Width) *The size of bite can be adjusted as follows: To adjust cutting width by knife: Upper blade 0% j blade After adjusting cutting width check stitch tongue.
To adjust the stitch tongue: Stitch tongue screw JJI / Presser foot S (1) Loosen the set screw for movable stitch tongue. (2) Move the stitch tongue to the left or to the right in accordance with the cutting width of the knives. If the stitch tongue is moved to the left, the size of bite narrows and, on the contrary, if moved to the right, it wid ens. * You can adjust the size of bite from 3 mm to 5 mm. (3) Return the upper knife to the original position and test-sew.
K the bight size is wider than the cutting width the S t i,us Ve stt lIe I. stew the stitch tongue and mose stitch tongue to right, Ihen, adjust the bight ize and the cutting width.
Sewing To start sewing * Put the ce th well underneath the pesse foot hetoe stu I rig to U ppe blade frist seW. o\5\ Se h\ a tew stitches turnuig the pulley by hand. The cloth will he ted autom ib c illy. ‘IOU need onl gLade t in the equired dii ection. To remove the work the soI k has been sevvn When to its end keep the machine run ning at low speed until 5 cm of chaining-off is abtained. Then cut the stitches ntit a oont close to th woi k.
To sew thick material *Put the material underneath the presser foot until it touches with the front of upper blade. Then, start sewing. *Do not lift the presser foot while sewing. To sew fine material (I) Adjust the pressure to stop the material from puckering and to facilitate sewing curves. (2) The standard bite for the overlock machine is 3.5 mm, but when you sew fine material, select a bite size smaller to avoid edges rolling. (Refer to page 16.
___________ _____ Fault-finding This sewing machine is designed for trouble-free operation. However, the follow ing chart indicates faults which may develop in the absence of basic adjustments. Trouble 1. Won’t feed. Cause Presser foot pressure too weak, 2. Needles break. 1. Needles bend, or needle tip blunt. 2. Needles incorrectly fitted 3. Material pulled forcibly. 3. Threads break. 1. Threaded wrong way. — 2. Thread caught up in something. — 4. Stitches skip. 3. Thread tension too tight. 4.
Replacing the blades If the blades get blunt, it will cause the material to pucker cloth and unclear stitches. * If one strand of thread can be cut off in front of or of the rear of the blade, the blade is sharp enough. *When the blades are blunt, replace them with new ones in the manner men tioned below, but be sure to unplug the power cord before doing so. Replacing the upper blade (1) To remove, loosen the up per blade set screw and pull up the upper blade.
Oiling For smooth and silent operation the moving parts of the machine should be oiled periodically. (See diagram below.) REMARKS: 1 2. 3. 4. Be sure to oil your sewing machine before use. Oil 1 to 2 drops at the oiling points. OIL ONCE OR TWICE A MONTH IF MACHINE IS USED NORMALLY. IF MACHINE IS USED MORE OFTEN, OIL ONCE A WEEK. After oiling, run the machine withoUt thread and the presser foot up. Wipe off an excess oil with a scrap of material to avoid oil stains. Machine Specification Model No.
H uskylock M430 193531-O17 Printed n Japan
