User manual JUKI MO-735 SERVICE MANUAL

[. . . ] Repair and service work may only be done once the machine has been disconnected from the electricity supply by removing the plug from the socket. Timing between upper and lower looper · Engagement of the upper knife with the lower knife · Ingage position, upper knife arm, front cover · 2-needles 4-threads over lock, 2-needles 3-threads, 3-needles 4-threads cover stitch, 1-needle 2-threads chain stitch (Balloon stitch type) (MO-735) 2-needles 4-threads over lock (MO-734DE) 130/705H (HAx1) No. Needle Overedge width (mm) Stitch length (mm) Differential feed ratio Needle bar stroke (mm) Feed dog height (mm) Presser foot height (mm) Light Power switch Motor built in Sewing speed (s. ) Driving system Machine size (mm) Machine weight (kg) Safety device Foot control - First release the two hooks at the top of the cover, by lifting the end up. [. . . ] - Check that the clearance between the needles and the front needle guard is 0. (MO735) - Check that the clearance between the needles and the rear movable needle guard is 0. - Move the rear needle guard (2) to make adjustment (B). - Loosen the setscrews (D) of the front needle guard (3). - Move the front needle guard (3) to make adjustment (A). - Distance from the center of the double-chain looper shaft to the doublechain looper blade point is 62. - Move the double chain looper (1) up or down to make adjustment. 1 mm) - Gauge needle is made of the needle after cutting a SCHMETZ 130/ 705H 15 X 1H Nm80. - Replace the right-hand needle with the gauge needle (3) and check that the blade point of the double-chain looper (1) meets with the bottom end of the left side of the gauge needle (3). (Both ways of going and back) - Move the double-chain looper support arm (D) left or right to make adjustment. - Make a rough clearance adjustment by moving the lower looper support arm (D) back or forth. - Turn the excentric stud (6) left or right to make fine adjustment. - Check that the clearance between the needles and the rear needle guard is 0. - Check that the clearance between the needles and the front needle guard is 0. - Move the rear needle guard (2) to make adjustment (B). - Loosen the setscrews (D) of the front needle guard (3). - Move the front needle guard (3) to make adjustment (A). - Check that the flat part of the double-chain looper thread take-up (1) is in its horizontal position (A) and in center of the double-chain looper thread take-up guide (2) when the needle bar is at the highest position. 1 mm (A), when the flat side of the double-chain looper thread take up (1) is in its vertical position. - Raise the presser foot using the lifting lever and check that the distance between the throat plate surface and the presser foot sole is 6. [. . . ] - Check if the up/down (A) play of the knife arm is less then 0. 2 mm - Pull the release lever (C) to the front, check if the knife arm is moving free up and down (A). - Check if the sideways play (D) of the knife arm is less then 0. - Turn the eccentric stud (2), left or right until there is less then 0. [. . . ]