Question about Juki MO-644D Mechanical Sewing Machine

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My blades won't cut, they seem to be rolling rather than cutting

It was sewing alright, until I was serging a pair of jeans, & it baulked at the tickness of the side seam, now it won't cut. The blades seem to have slipped

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Check bottom blade,it should be flush with needle plate. when you turn hand wheel by hand the top knife should be even along the length of the bottom one .the top knige is held by a 7 or 8 mm screw [looking straight at you] slacken this ,turn wheel till knife come to bdc and push the top blade against the bottom one. however if the edges of the knives are shiny or worn ,it will never cut. you can buy them relativly cheaply [eastman staples huddersfield is main juki agent].

Posted on Jun 24, 2009


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Posted on Jan 02, 2017


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Do I have to have the cutting blades on the machine to serge material? Also, what's rolled hem and whats overlock?

No you do not need the cutting blade to serge but you shouldn't have to remove the blade it you should be able to push the knob at base of blade inward or pull it outward to turn blade downward out of the way.

TUTORIAL - How to do a rolled hem on a serger - StitchCraft - 71k - similar pages Aug 5, 2009 ... One of my favorite uses for my serger is to do rolled hems. A rolled hem is were the machine folds the fabric under a tiny bit and then stitches it.

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Simplicity SW432 Loops big but even

check the tension settings
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if these suggestions don't help, then it's possible that the machine is out
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I have the Janome MO644D. The seam is extending far past the edge of the fabric with really big loops. It almost looks like a tension problem, but I've tried adjusting it, flossing the thread through...

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How do you lower the knife so you don't have to cut through the fabric? I'm trying to serge a waistband in but don't want to cut he fabric.

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From "Serge With Confidence" by Nancy Zieman:

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Use Woolly Nylon in the loopers & regular thread in the needle.

Lock or disengage the cutting blade.

Guide fabric along the right edge of the presser foot.

Stretch and equal amount from fron to back while serging.

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Practice with scraps first.

After serging, gently stretch & release the fabric edge after serging.

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Hi! everyone, i wonder if someone can help me out with my overlock willcox & gibbs 515-e32-451. it won`t cut the fabrics, maybe the blades are in a wrong position, so i need to know how to adjust them...

if it can cut even though it seems to be able to reach the blade may be dull, or they may have been put into a rest position, look for a lever when you open up the machine. I'll bet if you look at you tube you find people showing how to do a rolled hem, and for that you have to disengage the blade so you'll be able to see how it gets moved

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My simplicity serger SW432 wont cut

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Need replacement cutting blades on my simplicity serger easy lock 804 or go to Google, type in: "Replacement blades for a serger". Hope this will help. I have the same serger. --Tricie

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