Juki MF-7200D Series User's Manual and User Guide - Second Edition (English)
Summary
The MF-7200D series is a high-speed, semi-dry head coverstitch machine designed for professional hemming and covering of knitted fabrics. This comprehensive manual serves as an essential technical guide, providing detailed, step-by-step instructions for setup, maintenance, and calibration. It covers everything from initial accessory installation (air regulators, lifters) to precise adjustment procedures for the thread trimmers, looper mechanism, and air-blow wipers. Ideal for technicians, maintenance personnel, and industrial sewing operators who require expert knowledge to maximize machine efficiency and reliability in knitwear manufacturing.
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MF-7200D/UT42,45 INSTRUCTION MANUAL
Page Summary Contents For Juki MF-7200D Series User's Manual and User Guide - Second Edition (English)
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MF-7200D/UT42,45 INSTRUCTION MANUAL
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CONTENTS I. SPECIFICATIONS ...........................................................................................................1 II. AT THE BEGINNING ..............................................
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I. SPECIFICATIONS Model name Semi-dry head high-speed, small cylinder-bed coverstitch machine Model MF-7200D series Stitch type ISO standard 406, 407, 602, and 605 Example of application Hemming and c...
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III. INSTALLING THE ACCESSORIES WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaini...
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3. Installing the presser lifting solenoid (UT42) 1) Screw solenoid bracket pin ❶ supplied as accesso- ries in the tap located on the left side of the solenoid installing section. 2) Adjust solenoid b...
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4. Installation and setting SC-921 (1) Table-mount type * The instructions apply to the case the control box is installed on the table of the MF-7200D. To use any other machine head, install the contr...
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(3) Connecting the cords 2) Loosen screw B in cover ❷ with a screwdriver to open the cover. 1) Pass cords ❶ of the thread trimming solenoid, reverse-stitching solenoid, etc. and the cord from the moto...
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(4) Setting procedure of the machine head (Caution) For the operation panel other than CP-18, refer to the Instruction Manual for the operation panel to be used for the setting procedure of the machin...
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(5) Setting the lower stop position of the needle bar Call function setting No. 122. Check to be sure that the lower stop position of the nee- dle bar is as shown in Fig. 1. If not, adjust the lower s...
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(6) Setting of the auto lifter function WARNING : When the solenoid is used with the air drive setting, the solenoid may be burned out. So, do not mistake the setting. When the auto-lifter device (AK)...
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IV. AIR PIPING DRAWING (UT45) WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining...
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2. Piping drawing for air blow. 2. Adjusting the air regulator 1) Insert the air hose to air regulator ❶ 2) Use the air pressure at 0.4 to 0.5 MPa (4 to 5 kgf/ cm2). 3) Draw up regulator knob ❷ , turn...
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V. THREADING THE MACHINE HEAD WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining...
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VI. ADJUSTING THE LOOPER THREAD TRIMMER MECHANISM WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power ...
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2) After adjusting the stroke, loosen screw ❺ from the lower side, and move collar ❹ to the left and right to adjust so that the stroke becomes 18 mm, same as that of the looper thread trimming soleno...
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3. Adjusting the Lower knife 1) Set lower knife ❹ and lower knife holder ❺ with setscrews ❻ at the position of the illustration. 4. Engaging the knives and adjusting the clamp spring 1) Loosen screws ...
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7. Initial position of the lower thread trimmer mechanism When looper thread trimmer ❹ is located at its left- most position, the top end of the looper thread trim- mer has to be spaced 22 ± 1 mm from...
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10. Adjusting the longitudinal position of the blade point of lower knife Blade point of lower knife is in the center of thickness of 1) Bring the needle bar to its highest position. looper. 2) Adjust...
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VII. ADJUSTING THE THREAD RELEASE MECHANISM WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off an...
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VIII. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM (UT45) WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after tur...
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4. Adjusting the speed of moving knife Stroke of air cylinder ❶ is 20 mm. Speed of the moving knife can be changed with speed controllers ❷ and ❸ 1) When you desire to change the protruding speed of m...
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IX. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM (UT42) WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turni...
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X. ADJUSTING THE AIR-BLOW WIPER (UT45) WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and asc...
Manual Details
| Brand | Juki |
|---|---|
| Pages | 23 |
| File Size | 866.26 KB |
| Published | May 24, 2026 |
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Frequently Asked Questions
What is the recommended procedure for servicing the air-blow wiper?
Turn power off, ensure the motor is at rest, cut the air supply from the compressor, and protect against personal injury.
What range of stitches can this machine handle?
The stitch length can be adjusted between 1.4 mm and 3.2 mm, with a potential maximum adjustment up to 4.2 mm.
When adjusting the top covering thread trimmer mechanism, how is it positioned?
Use three screws: one for lateral position, one for angle, and one for adjusting the vertical knife position.