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Operation Manual – TEXI 781 SERVO
Operation Manual
Buttonhole machine
781 SERVO

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Summary of Contents for Texi 781 SERVO

  • Page 1 Operation Manual – TEXI 781 SERVO Operation Manual Buttonhole machine 781 SERVO...
  • Page 2: Table Of Contents

    Operation Manual – TEXI 781 SERVO Table of Contents 1. The height of the needle bar 2. The cooperation of the needle and the hook 3. Matching of the baseline adjustment handle 4. The needle bar cooperation 5. The adjustment of the needle drop 6.
  • Page 3: The Cooperation Of The Needle And The Hook

    Operation Manual – TEXI 781 SERVO Adjustment method: (1) Insert the positioning ruler between the needle bar and the needle plate, loosen the needle bar, and tighten the screws to adjust. Note: the needle should fall in the center of the needle plate.
  • Page 4: Matching Of The Baseline Adjustment Handle

    Operation Manual – TEXI 781 SERVO At this time, adjust the gap between the hook positioning hook and the hook to 0.5mm, and loosen the screw of the hook positioning hook to adjust. (Keep the line pass smoothly) The phenomenon when the adjustment value changes: (1) When sewing elastic fabric, slow down the cooperation time of the hook to the needle, and the effect is better.
  • Page 5: The Needle Bar Cooperation

    Operation Manual – TEXI 781 SERVO (4) Adjustment order of amplitude and baseline: 1 change of course amplitude 2 Observation of the distance between the inside of the amplitude of the right course and the falling point of the cutter 3 Adjusting the position of the right baseline 4 Adjusting the amplitude of the...
  • Page 6: The Adjustment Of The Needle Drop

    Operation Manual – TEXI 781 SERVO Loosen the fixing screw of the pinion gear to adjust the above standard adjustment value. Pay attention to the axial movement of the lower shaft when adjusting. Confirmation method after adjustment: pad the paper at the needle drop and turn the pulley by hand to observe whether there...
  • Page 7: The Position Of The Under Feeding Crank

    Operation Manual – TEXI 781 SERVO When the machine is in the parking position (the needle is in the left needle position), loosen the fastening screw on the baseline adjustment handle, push down the needle bar swing fork, so that...
  • Page 8: Front And Rear Position Of The Presser Foot

    Operation Manual – TEXI 781 SERVO Adjustment method: Rotate the main cam with the manual feed handle. When the main cam engraving line is aligned with the center of the roller pin screw of the feeding lower crank, loosen the fastening screw of the lower crank and then loosen the button hole length nut.
  • Page 9: Cutter Falling Time

    Operation Manual – TEXI 781 SERVO If the position of the presser foot is not accurate, the front and rear positions of the presser foot are not accurate, and the opening and closing action of the upper scissors action plate is affected.
  • Page 10: Adjustment Of The Stop Device

    Operation Manual – TEXI 781 SERVO Adjustment method: Use the knife of the drive hook adjustment screw to adjust. The phenomenon when the adjustment value changes: When the cutter does not return or continuously falls, check the gap between the cutter drive lever and the cutter action hook, or change the cutter drive lever tension spring.
  • Page 11: Start The Position Of The Security Hook

    Operation Manual – TEXI 781 SERVO Adjusted confirmation method: The stop frame is adjusted to a high speed running state, and the manual stop handle is rotated, the stop block must release a first gear, enter a low speed state, and then release the second gear to enter a stop state.
  • Page 12: Left And Right Position Of The Upper Knife

    Operation Manual – TEXI 781 SERVO (2) Note: The adjustment of this part is a slight adjustment, please do not adjust excessively The phenomenon when the adjustment value changes: When the amount of front and rear movement is excessively adjusted, the protruding portion of the scissor swing frame will slide out from the groove of the presser roller frame.
  • Page 13: Height Of The Upper Scissors

    Operation Manual – TEXI 781 SERVO Adjustment method: Step on the presser foot pedal. When the upper thread scissors move to the apex, use a hex wrench to loosen the fixing screws of the scissors pendulum and adjust the position of the front, back, left and right.
  • Page 14: The Position Of The Roll Into The Upper Thread At The Start Of Sewing

    Operation Manual – TEXI 781 SERVO Adjustment requirements: Install the scissors as low as possible, but do not touch the presser foot. Adjustment method: Loosen the fixing screws of the upper scissors and adjust them up and down. Confirmation method after adjustment: Place a gasket with a thickness of about 4 mm under the presser foot.
  • Page 15: The Time When The Scissors Are Opened

    Operation Manual – TEXI 781 SERVO Note: There is also a relationship with the position where the upper scissors clamps the wire, so confirm the position of the upper scissors action plate, and then increase or decrease the wire control plate gasket.
  • Page 16: Safety Crank Adjustment

    Operation Manual – TEXI 781 SERVO Adjustment method: Loosen the limit plate fixing screw so that the sewing machine is in a state of low speed start (when the stop block A and the stop lever block B meet) the safety lever is in light contact with the limit plate.
  • Page 17: Fixed Knife Position

    Operation Manual – TEXI 781 SERVO Adjustment method: When the upper thread scissors are loose, move the front of the scissors spring with the hand plate.The front of the upper scissors spring and the scissors mouth are all attached, and the thread can be clamped regardless of where the scissors cut the thread.
  • Page 18: Low Speed Bump Position

    Operation Manual – TEXI 781 SERVO Adjustment requirements: The lifting amount of the presser foot is 12mm Adjustment method: Insert the 12mm pad between the presser foot and the needle plate, loosen the presser foot fixing screw, press the presser foot lifting pedal, and press the presser foot clamp and the presser foot roller frame, then tighten the presser foot fixing screw .
  • Page 19: Belt Adjustment

    Operation Manual – TEXI 781 SERVO The phenomenon when the adjustment value changes: If the gap at the starting ram is too large, it cannot be rotated at a high speed. If it is small, it will cause an inaccurate stop.
  • Page 20: The Adjustment Of Other Parts

    Operation Manual – TEXI 781 SERVO Same as the adjustment method of the head start fork. When the low speed is running, loosen the fixing screw of the speed reduction mechanism fork and adjust the position of the speed reduction mechanism fork.
  • Page 21: Adjustment Of The Tension Opening Time

    Operation Manual – TEXI 781 SERVO Screw in the adjusting screw 4, the reinforcement width will increase, and the screw-out will decrease. The amplitude adjustment link 5, the number shown, indicates the width of the reinforcement amplitude. 2. Adjustment of the tension opening time...
  • Page 22: Lower Thread Tension Spring

    Operation Manual – TEXI 781 SERVO (Action sequence): Upper thread scissors action Lower thread lever action Lower line moving knife action <Upline scissors action>------ Cut section thread <Lower thread lever action>------Pull out the lower thread required for the initial seam and pull in the remaining upper thread <...
  • Page 23 Operation Manual – TEXI 781 SERVO When changing the hook, check if the bobbin is pressed against the bobbin. If it does not match, loosen the bobbin fixing screw to adjust its height. CE DECLARATION OF CONFORMITY Distributor: Strima Sp. z o.o.
  • Page 24 Operation Manual – TEXI 781 SERVO...
  • Page 25 Operation Manual – TEXI 781 SERVO Dealer:...

Table of Contents