Instruction/ maintenance manual of the product MSK-8420BL-18 Reliable
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MSK- 8400 BL- 18 MSK- 8420 BL- 18 Indust rial S ewing M ach ine Instruction Manual.
CONTENTS 1. Brief introduction 1 2. Main specifications 1 3. Machine installation and operation preparation 1 1. Machine installation 1-3 2. Operation preparation and notice before running 3-4 4. Machine operation 5-6 1. Coordination among needle, thread and materials 5 2.
Operation instruction.
MSK-8420BL-18 1 2 MSK-8420BL-18 machine adopts straight double needle and two vertical auto-lubricating hooks for thread looping, sliding lever for thread take up to form two lines of lockstitch seam.
3 5 4 C B A A B C E D A 1.4 Install the presser foot lifting controller (Fig. 3) First connect the chain B with presser foot lift lever C by hooks A, then install the pedal assembly D on the rung of t.
6 20 ~30 A B C D E F G 10~12mm 3 7 8 B A 1.7 Connecting the clutch lever to the pedal (Fig. 6) A. The optimum tilt angle of pedal against floor is approx. 20 30 . . B. Adjust the clutch of motor so that the clutch lever C and draw bar B run in line. .
9 10 4 11 A B. When the machine starts for initial time or reuse after a long time, the proper oil amount should be filled in the sections of machine shown by arrows in Fig. 8,9. When it is in operation, please observe the oil sparking in oil screen to check the oil condition.
13 14 A B A B A B A 12 5 C B A E D F 3. Winding the bobbin thr ead 3.1 The method of winding Insert the bobbin B into winder shaft, threading the thread A to upper and lower holes of pin E, then to th.
6 17 15 C B A 16 3.4 Placing bobbin (Fig. 15) Note: when bobbin is placed into the bobbin case, the thread should be wound properly in the correct direction shown in the figure. . 3.5 Drawing thread from the bobbin (Fig. 16) A. Draw the thread end to bobbin slot shown in the figure, and pull it out down through the inner bobbin stop piece.
7 18 21 19 20 A. If the stitch seam shows as Fig. 17B, indicates that the needle thread tension is too tight or the bobbin thread tension is too loose. Please turn the thread tension nut counter-clockwise to release the needle thread pressure; or turn the bobbin lace adjusting screw with a screwdriver to increase the bobbin thread tension.
8 24 22 23 3.2 How t o reset the safety clutch device (Fig.22) A. While press down the button on the bed surface with left hand, turn the hand wheel slowly with right hand in the direction shown in Fig. 22 (clockwise). B. When the stopper brakes the hand wheel, more strength is needed to turn the balance wheel to reset the safety clutch device.
9 25 26 Oil amount adjusting screw Oil amount adjusting screw Oil amount adjusting screw 3.5 Adjust the vertical stroke of presser foot (Fig. 25) When stitch on the very elastic materials or the thickness of sewing materials changes, the adjustment should be done in the following order: .
Parts manual.
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44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 1 2 2 2 2 1 3 2 2 4 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 Thread tension fixing bracket assembly Thread guide bracket Thread guide pl.
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42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 1 1 1 1 1 1 1 1 Thread tension fixing bracket assembly Thread guide bracket Thread guide plate S.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Right hook saddle Screw Upper bushing Lower bus.
7 8 9 10 12 13 14 2 1 2 3 4 5 6 11 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 24 2 26.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 5 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 2 4 Stitch length adjusting rocking lever Screw Set screw Stitc.
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 16 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 44 28 36 53 54 55 56 57 58 59 Automatic presser foot .
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 2 2 2 2 4 1 1 1 bag 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Parts bag Casting hinge Casting hinge cushion Casting cushion (big) Casting cushion Bobbin Oi.
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