Seiko LSC-8B-I.8BL-1 Operating Instructions Manual Download Page 15 | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Summary of Contents for LSC-8B-I.8BL-1

Page 1: ...LSC 8BV 1 OPERATING INSTRUCTIONS FOR LSC 8BV 1 8BLV 1 LSC 8B I 8BL 1 LSC 8BH I 8BLH I as E K II LSC 8B 1 SEIKO SEWING MACHINE CO LTD TOKYO JAPAN From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...arge Standard Large Stitch Length Max 6 mm 7 mm 6 mm 7 mm 6 mm 7 mm Presser Foot Alternating pressers Presser Lift Up Down Moving Amount 3 6 mm Presser Lift 8 mm by lever Needle Bar Stroke 33 2 mm Thread Take Up Slide motion type Thread Take Up Stroke 57 5 mm 67 mm 57 5 mm 67 mm 57 5 mm 67 mm Diameter of Cylinder Bed 46 mm 50 mm 46 mm 50 mm 46 mm 50 mm Working Space 258 mm x 110 mm Weight 29 kg wi...

Page 3: ...g the lift of the alternating presser feet 9 Instructions for LSC 8BV 1 and 8BLV 1 10 INFORMATION FOR ADJUSTMENT Adjusting the height of the feed dog 11 Adjusting the timing of the needle plate needle and feeder 11 12 Adjusting the height of the needle bar 12 Timing between the needle and the hook 13 Timing between the needle and the feeder 14 Adjusting the height of the presser feet 14 15 Timing ...

Page 4: ... ADJUSTMENT Fig 2 Do not operate the machine even if for testing unless it has been pro perly oiled To fill the oil reservoir on the top of the machine pour oil through the oil filler hole A until oil level reaches to the upper reference line B Oiling is automatically made by the vibration of the machine while sew ing operation through the oiling wicks in the machine and oil flow stops automatical...

Page 5: ...ion and try pre running OIL ADJUSTMENT While operating the machine the lubrications to each spot of the machine are made When the machine is in continuous operation stop oiling for a while at your option In that case turn the dial until two points fit together as per the following picture then the dial comes down and the lubrications are stopped perfectly OIL ADJUSTER From the library of Superior ...

Page 6: ...Loosen the needle set screw 2 and put the needle 3 up into the needle bar as deeply as it will go with the long groove of the needle faces the left 3 Tighten the needle set screw securely THREAD Cotton synthetic or silk thread can be used according to your purpose the thickness of thread is up to 8 Always use left twisted thread for upper thread but you can use either right or left twisted thread ...

Page 7: ...then start the machine 5 The pulley 2 will automatically be free from the belt and stopped after the bobbin is filled with thread THE ABOVE OPERATION CAN BE DONE WHILE SEWING ADJUSTMENT OF THE BOBBIN WINDER Fig 4 IN CASE OF UNEVEN WINDING If the thread does not wind evenly on the bobbin loosen the screw 4 in the tension bracket and move the bracket to the right or left as may be required then tigh...

Page 8: ... slot of the bobbin case and under the tension spring 1 Fig 6 and then the thread guide THREAD WINDING DIRECTION when fitting the bobbin into the bobbin case Check the thread winding direction as shown Fig No 6 5 Draw out about 5 cm of the end of thread pull up the latch 1 Fig 5 keeping the slot of the bobbin case faces upper side And fit the bobbin case into the hook as deeply as it will go and p...

Page 9: ...e needle 2 After the above threading hold the end of thread with I t your left hand and turn the 7 4 1 pulley with your right hand so 0 1 El 1 i that bobbin thread may be pick ed up by needle thread And put their ends of thread on the r i i i ifri i other side bed through under 1 iJ JB the presser foot for starting 9 1 2 operation DETQcrmii Fig 7 REGULATING THE THREAD TENSIONS For ordinary stitchi...

Page 10: ...ft 2 TENSION OF THE BOBBIN THREAD To increase the tension turn the screw 2 Fig 6 to the right and to decrease it turn the screw to the left by a screw driver Fig 9 ADJUSTMENT OF THE PRESSURE ON GOODS Fig 10 The pressure of the presser feet is regulated by the adjusting screw 1 To increase the pressure turn the screw to the right To decrease it turn the screw to the left 1 i S From the library of S...

Page 11: ... FEET Fig 12 The thickness of the material sewn should control the height of the lift of the alternating presser feet It should normally be just high enough for clearance of the material With normal adjustment both feet lift to equal height To adjust the lift loosen the wing nut 1 move up the nut to raise the lift and push down this nut to lower the lift When altering the lift of the lifting press...

Page 12: ...ape the wrong side up 4 Then close the plate 2 ADJUSTING THE BINDER Fig 13 The setting position of the binder depends on the shape of the binder tape width and thickness of goods Accordingly it is determined through actual sewing test To adjust this loosen the nut 1 move the binder to the right or left to get proper position Then tighten the nut AVAILABLE various kinds of binder Binders two fold t...

Page 13: ...ine head toward the other side and check that the screw 2 Fig 16 is securely tightened on the V ditch 1 Fig 16 2 Adjust the feed motion to the maximum and loosen the screw 2 Fig 19 with a hexagon wrench standard accessories 3 Set the position of the feeder so that both clearances between feeder and needle plate are equal before starting feed motion and after finishing 4 Securely tighten the screw ...

Page 14: ...e bar rock frame 1 Fig 18 move it as may be required to get the correct position to the feeder 5 Tighten the screw and close the cover Fig 17 Fig 18 ADJUSTING THE HEIGHT OF THE NEEDLE BAR When the needle bar is at its lowest point normally the measurement between the surface of the needle plate and the upper end of the needle eye is 12 6 mm LSC BBV l 12 8 mm LSC 8B 1 13 1 mm LSC 8BLV 1 and 13 3 mm...

Page 15: ...he needleand the measurement between the hook point and the upper end of the needle eyeshould be 2 mm further the clearance between the hook point and the needle hollow should be about 0 05 to 0 1 mm TIMING AND THE CLEARANCE ADJUSTMENT Fig 19 1 Loosen the two screws 1 2 Adjust the timing If require earlier turn the hook toward the direction of its revolution 3 Also adjust the clearance by means of...

Page 16: ...ever 4 Fig 11 up and down turn the cam 2 Fig 21 and set at the point both the needle and the feeder rest 3 Tighten the screws securely and close the top cover Fig 21 LSC 8BV 1 8BLV 1 8BH 1 8BLH 1 Fig 21 LSC 8B 1 8BL 1 ADJUSTING THE HEIGHT OF THE PRESSER FEET ADJUSTMENT BY THE PRESSER BAR LIFTER 1 Loosen the screw 1 Fig 10 sufficiently 2 Raise the presser bar lifter and loosen the set screw 1 Fig 2...

Page 17: ...when turn the hand wheel toward you after lowering the presser bar lifter the vibrating presser foot should reach the feeder earlier than the needle eye comes to and when the needle raises the vibrating presser foot should leave the feeder after the needle eye has left the feeder This is due to the reason that the vibrating presser foot must tightly hold the goods while the needle is passing the g...

Page 18: ...ction on the thread 1 Loosen the stop screw 3 Fig 9 2 Move the stop 4 Fig 9 to the right For less action move it to the left 3 Tighten the screw HOW TO ADJUST THE TENSION OF THE SPRING 1 Loosen the serrated nut 5 Fig 9 slightly 2 Loosen the screw 4 Fig 18 slightly 3 Turn the tension stud 6 Fig 9 slightly to the left to strengthen the tension to lighten the tension turn to the right with a screw dr...

Page 19: ...O LTD 11 3 Imado 1 chome Taito ku Tokyo 111 8534 Japan TEL 81 3 3872 6173 4 Overseas group FAX 81 3 3873 6596 E Mail seikOOOl tctv ne jp www tctv ne jp selk0001 00093000 E From the library of Superior Sewing Machine Supply LLC ...

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