How do I thread a mylock 434d

A mon avis, si la porte lat?rale de votre surjeteuse Janome MyLock 434-434D ne reste pas ferm?e, il y a quelques choses que vous pouvez essayer pour ajuster cela :
Assurez-vous que la porte lat?rale est correctement align?e : Il est possible que la porte lat?ralement ne se ferme pas correctement car elle n'est pas correctement align?e avec le reste de la machine. Essayez de la r?ajuster en la faisant glisser doucement vers la gauche ou la droite jusqu'? ce qu'elle s'aligne correctement.
Veuillez v?rifier que les charni?res sont bien en place : Les charni?res de la porte lat?rale peuvent se desserrer avec le temps, ce qui peut emp?cher la porte de se fermer correctement. V?rifiez que les charni?res sont bien en place et si ce n'est pas le cas, ajust?z-les avec un tournevis.
V?rifiez aussi que le loquet de verrouillage fonctionne correctement : Le loquet de verrouillage est ce qui comporte la porte lat?rale ferm?e. Si le loquet ne fonctionne pas correctement, cela peut emp?cher la porte de se fermer correctement. essayez de pousser doucement sur le loquet pour voir s'il se verrouille en place. Si ce n'est pas le cas, vous devrez peut-?tre le remplacer.
Bonne chance.

No, it probably means that the old oil has solidified and glued the moving parts together. Your machine needs a thorough cleaning and oiling.

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Never heard of such a problem with this brand. Are you threading in the correct order? Are you threading with the tension off, either by turning the tensions to 0 or by raising the presser foot (I don't know which you need to do in this model) ? Are you using the correct needles, and are they fully seated right way around? Can you provide photos of the serging it's doing now?

For what it's worth, I drive a couple of Jukis -- this is the threading pattern for a 3/4 overlock with one of 'em: http://picturetrail.com/sfx/album/view/24103653 http://picturetrail.com/sfx/album/view/24104540 http://picturetrail.com/sfx/album/view/24104556 http://picturetrail.com/sfx/album/view/24104568 and photos of stitch formation: http://picturetrail.com/sfx/album/view/24107012 http://picturetrail.com/sfx/album/view/24107038

My first bit of advice is to join a general sergers group on the internet, like the yahoo group "sergers":
https://groups.yahoo.com/neo/groups/Sergers/info I think the second bit of advice would be to consider finding a different serger mechanic and/or teacher.

I have this serger, also. A friend (who knows sergers) and I spent 2 hours today trying to get the lower looper threaded--with no success! There is a diagram in the door of my machine, but it is still very confusing! I'm taking mine to the shop on Monday and have them thread it and show me how to do it!

Put 4 colours of thred on the machine , set all tention knobs to 0 stitch and see what colour is not tight, adjust the colour that is not tight. Also use jersey ball point no 80/12 needles it work on all material E-Mail me [email protected] From Willem SA

You have to thread the needles last.

1 - Take the threads out of both needles.
2 - Thread both loopers according to the diagram on your serger.
3 - Thread the needles.

If this fails, you need to bring it to a pro for service.

I scanned my manual for it, and it can be downloaded for free here.

The gist of it, is that you should do the lower looper first, upper looper, right needle, then left needle. From the front of the machine, this is starting with the rightmost holes on the threadguide plate, and finishing with the leftmost holes on the threadguide plate.

This LINK is for the 334D and is essentially the same.......there should also be a small threading diagram inside the door at the front

I scanned my manual and it can be downloaded for free here.

I scanned my Mylock 434 manual and it can be downloaded for free here.