JUKI MB-372 Manual, Instruction Book

29, Next, loosen the screw ® @Fig.35 and makeadjustment so that the shank button holding clamp © holds the exact center of the button. To adjust the holding pressure of the shank button holding clamp ®, loosen the thrust collar set screw ®, Fig. 35, and if the thrust collar ® Fig. 35 is rotated, th…

23, 24. CAUSES OF MALFUNCTIONS AND REPAIRING Nature of malfunctions Reasons Repairing Thread breakage Loop positioning motion bad Nipper is holding the thread Needle does not fall in the center of hole Quicken the right and left timing of the loop positioner Adjust with nipper bar block Adjust wit…

31, port plate (§) and the left end of the adapter ® just sufficient to prevent the sewing cloth from pushing out the button, then tighten the set screw Normally, this distance "a" is l-'1.5m/m. C. Cautions on sewing operation a) In order to attach the metal shank buttons secur…

10, 10. THE THREAD TENSION (Fig. 8) The thread tension disc No. Ci) controls the tightness of the button but only a light tension is required. The thread tension disc No. 2 (D regulates the tension of the under sideof the button but a stronger tension than the disc No. 1 is required. To…

22, JUKI MB-372 The clamp holding range is measured by moving the button clamp lifting lever stop up and down but when changing to automatic system from pedal system, make absolutely certain that the button clamp lifting lever stop (J) is pulled way up from the contacting surface of the machine Fig. 25 When c…

16, 15. POSITION OF THE NEEDLE GUARD (Fig. 16) Adjustment should be made so that when the needle bar is at the lowest position, the clearance between the needle and the needle guard @ comes to 0.05~0.1 mm by looseming the screw (u) and moving the needle guard (g) to right or left. 16…