77” OPERATiNG iNSTRUCTION
CONTENTS A. Parts names B. Preparation for the sewing a. Preparation b. Fitting the foot controller c. How to adjust the foot controller d. Turning on / off the lamp e. Labrication f. Opening and closing looper cover and side cover g. Threading procedure C. Operating the machine a. Test sewing b. Thread tension adjustment (Normal hemming) c. Dial chart for thread tension adjustment d. Relation chart for fabrics and thread stitch length e. Correct thread tension 1.
A.
• Accessories • Specifications Maximum speed Overlock seam width Stitch length Accessories case Presser foot Presser foot lift Needle Number of threads Lubrication Dimentions Net weight 1 300 s.p.m. 35mm (standard) 5.0mm 1.0 Hinged 5mm 130/705H No.75— No.90 4 Manual 278(W) x 264(D) 7Kg >< 310(H) Screw driver Screw driver (For needle) Brush for dusting Roll hemming presser foot Tweezers Upper knife Thread stripping discs (4 pcs.
B Preparation for the sewing a. Preparation This machine must be used on a flat and horizontal surface or purpose-built sewing machine table. b. Fitting the foot controller First, insert the controller connector into the connector socket on the machine as shown in the illustration, then connect the plug to a power source. c. How to adjust the foot controller Place the tip of your foot lightly on the pedal.
e. Lubrication The bushings and other important parts are made from special materials and only require lubrication once or twice a month. When oiling always be sure to use a good quality sewing machine oil. Apply just one or two drops of oil to the areas indicated.
f. Opening and closing looper cover and side cover 1. To open the side cover, push it to the direc tion of the arrow. To close side cover, push it to the right until it locks. 2. To open the looper cover, slide the looper cover to the right, swing it down towards you. 3. To close the looper cover, push the looper cover upwards lightly towards the machine until it clicks and it will close securely. g. Threading procedure 1. Ensure that the telescopic thread guide bar is at maximum vertical height. 2.
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3. Next thread the right neecile surplus thread about 5 cm (about 2”) needle eyes. 4. Lastly thread the left needle Leave surplus thread about 5 cm (about 2”) beyond needle eyes. It would be helpful in the initial stage, (before commencing to sew) that different coloured threads are used. Similar to those illustrated on the Tension Dial Diagram (4), this will identify the threads being used with respective needle and looper.
C. OPerating the machine a. Test sewing After threading, be sure to make a test sewing before actual operation. Procedure 1. Hold the 4 threads by your left hand and turn the pulley 2 or 3 turns slowly towards you with your right hand. Checking the threads being interlocked. 2. Insert the cloth under the presser foot up to the edge of the upper cutter and start sewing slowly. b.
d. Relation chart for fadrica and thread stitch length Fabrics Normal h.nimlng Thr.ad Light Organdy, light-knit fabric, Taffeta, silk,lining materials Mdlum Cotton, tricot, linen, dress materials H.avy Tweed, suit materials, denim, heavy cloth KnIt tadrica Roll george tte m g c Cotton Silk Synthetic thread Cotton Silk Synthetic thread Cotton Silk Polyester thread Polyester thread Synthetic thread Woolly_nylon Polyester thread Synthetic thread Woolly nylon Stitch l.ngth No.80—100 No.80—100 No.
f. Incorrect thread tension and how to adjust 1. The sketch shows the left needle thread tension is too loose. 2. The sketch shows the right needle thread tension is too loose. 3. The sketch shows the right looper thread tension is too loose. 4. The sketch shows the left looper thread tension is too loose.
g. Roll hemming • Roll hemming foot • Normal hemming foot N Remove the left needle first. For the roll hemm ing (narrow / foldover hemming) replace the normal stitch foot by the roll hemming foot. By following this instruction, very good sewing results can be achieved. • How to replace the presser foot 1 Raice the presser foot and then push up the small lever. The foot for normal sewing can then be taken off. . 2.
h. Points to observe during sewing • Place the fabric under the cutter and lower the foot before commencing to sew. • Then slowly sew the first few stitches, the fabric will feed automatically and genUy guide by hand. • Do not push or pull the material so as to avoid the possibility of breaking the needles. Caution pushing or pulling of fabric can result in needle breakage and cause further damage to needle plate, and looper mechanism.
i. 3 thread overedge seam Three-thread sewing is possible by using either right or left hand needles. Threading procedure is as usuaJ. For wide seam sewing. 1. Remove the right hand needle. 2. Use the left hand needle thread and right & left looper thread. 3. Seam width can be changed from 5 mm to 7 mm. (Standard seam width is 5.5 mm). For narrow seam sewing. 1. Remove the left hand needle. 2. Use the right hand needle thread and right & left looper thread. 3. Seam width can be changed from 3 mm to 5 mm.
D. Some adjustments / Maintenance a. Adjusting the seam width Standard seam width is 3.5 mm. It can be adjusted from 3.0mm to 5.0mm when using the different materials. 1. Open the side cover and looper cover. Push the upper knife control knob firmly to the right and, whilst maintaining pressure, turn the knob and knife towards you downwards, releasing the pressure as the knife is lowered. To raise the knife, simply reverse the oper ations above. 2. Adjust the required seam width by turning the dial.
c.Replacing needle (S) DURING THIS OPERATION DISCONNECT THE MAINS PLUG FROM THE POWER SOURCE. 1 Removing needle (s) Turn the pulley wheel towards you by hand, (in the direction of the arrow), raising the needle (s) to the highest position. Using a screwdriver, loosen the needle clamp screw and remove the needle(s). If necessary, use the tweezers supplied. 2.
d. Replacing the upper knife DURING THIS OPERATION DISCONNECT THE PLUG FROM THE MAINS OUTLET. 1. To remove the upper knife. Push into the right, and turn down anti-clockwise towards you, the upper knife release knob, until the knife is held in position by the carrier stopper (approximately horizontal to you). Then loosen the retaining screw and take off the knife, taking care not to touch the blade. 2.
e. Replacing the lower knife DURING THIS OPERATION DISCONNECT THE PLUG FROM ThE MAINS OUTLET 1. To remove the lower knife. First push into the right the upper knile release knob turning it anti-clockwise to release the upper knife (as described on page 1 7) Loosen the lower knife screw and remove the lower knife, taking care not to touch the blade. 2.
f. Replacing the light bulb FIRST DISCONNECT THE MAINS PLUG FROM THE POWER SOURCE • Loosen the screw of the rear of the machine body and remove the lamp cover. • Turn the bulb in direction (1) and remove it. Insert the new bulb by pushing upward, turning it in the direction (2). Replace cover. Caution: Use a maximum 1 5 watt bulb only.
E. Sewing problems and solutions Used correctly, your machine should operate efficiently and without difficulty. However you my from time to time encounter the occasional problem which usually results from not carrying uiit various adjustments in the recommended manner. Listed below are the more common problems, together with their simple solution which shouki overcome most of these difficulties. Problem Cause Needle breakage Needle is bent or point damaged Insert new needle.
