Question about Juki MO-644D Mechanical Sewing Machine

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I just bought a new Juki serger MO-644D and I can't figure out the knives and how to release them

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I found the instruction manual for your serger on eBay. It is item # 160454752052

Posted on Jul 26, 2010

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This is a YouTube video for the MO654DE, but it should be pretty similar to your MO644. The instructions for raising (disengaging) the upper knife is located approximately at 4:15.

Posted on Apr 06, 2015

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1 Answer

I need replace thread holder for Juki MO-644D serger


Good luck. I found a replacement part for one of mine on Ebay. Just search for Used Juki Serger for parts. Maybe you'll find a 644D for cheap enough that you can scavenge parts for a few more years.

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Serger motor locked up completely


I suggest taking the machine in to be serviced

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HI, I ve just got my Juki 644D yesterday. Brand new. Today I was using it and tried to adjust the tension. The front cover was open when I tried to do some stiches to see if the tension was ok. ...


take back the machine to the store you bought it from and get another machine.that is if you have warranty.you will have more problem later on.that needle like metal is from under the machine and it broke off the tension feeder. good luck.

Sep 25, 2011 | Juki MO-644D Mechanical Sewing Machine

1 Answer

JUKI MO 134 SERGER


How to Thread Juki MO-134 Serger from watching lady at Lyles. Turn upper blade up. Push in first then turn up.It makes threading easier. Blue Thread upper looper first. Pull thread through tension knob. Don'tjust lay it there. (She thought that is what I must have done) Orange Thread lower looper next. Pull thread through tension knob as inthreading upper looper. Adjust lower looper so it is right nextto upper looper so that their points are almost together and directly belowsewing needles. Lower looper will be in front of upper looper (I believe). With tread from upper looper pulledback, slightly lift lower looper above upper looper and thread. I think this isright. Pull thread back with other thread. Tension is the key. Remember that. Yellow: Thread left needle first.Remember tension. Pull thread through curled wire on left side of needle arm. Green: Thread right needle. Rememberabout tension. Pull thread through curled wire on right side of needle arm. b> Note: Before sewing turn the wheel tomake sure the stitches are going together correctly.

Apr 16, 2010 | Juki MO-644D Mechanical Sewing Machine

1 Answer

How do I thread the Juki MO-644D?


Email me at sewingnz@gmail.com should be able to help.

Jan 19, 2010 | Juki MO-644D Mechanical Sewing Machine

2 Answers

Looking for an online manual for my Juki serger MO-634DE


Herre is a link to the threading diagram: http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Juki_Sewing_machine_threading/Juki_MO_634_Threading_Diagram.htm

Oct 08, 2009 | Juki MO-644D Mechanical Sewing Machine

1 Answer

THREADING FOR JUKI MO 357


Put new needles in it.

Following the colors, thread the upper looper first, then the lower looper. Next thread the needles. Always thread in this order.


Jun 27, 2009 | Juki MO-644D Mechanical Sewing Machine

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