Question about Janome Memory Craft 9000 Computerized Sewing Machine

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Re: possible solution for the 9000 errors.

Although I have noted your sound advice in your response, I didn't tell you about the recent regular service that hadn't remedied its error. You pointed towards bobbins and cleaning which did remedy the fault. So my current theory is clean under the bobbin holder more regularly and use only "pucker' Janome bobbins. Thanks very for your help.

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  • Anonymous Nov 26, 2008

    don't know how to insert janome sewing machine needle



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  • 1,388 Answers

Ohhhhhhh yes,

Clean under and around the bobbin case wife has a small brush to hand, and does it at every bobbin change.

The quilters of the world need to be especially vigilant, as the wadding and layers generate lint at a remarkable pace.

As to bobbins, they do vary from brand to brand, diameter and height, so this can be an annoying apparently "intermittent" problem if you happen to have a few different brands kicking around.........I had one customer who had me on 3 house calls before I realised that she had been collecting blinkin' bobbins where and whenever !!

Another thing with the brown magnetic donut in the middle of your white hook to use Janome plastic bobbins to avoid any other troubles, rather than the older metal bobbins.

Glad it all went well.



Posted on Jun 10, 2008

  • Hassy
    Hassy Jun 10, 2008

    As a further tutorial on getting the balances right in the future, this generic tension setting guide will walk you through attaining the correct balance of tension for any machine.


    Ensure that all is clean and free of lint for tension troubleshooting .......

    solution is for tension problems...if you cannot form any sort of
    stitch, the issue is quite different, so please let me know if you need
    a different problem solved.....

    It is quite long, but just work through each section in order.
    "knotting up" can reveal a lot. If you have loose threads on one side
    or the other, the tension on the opposite side will be the culprit.

    Ensure sharp new needle,
    Thread guides and Bobbin are Clean & Clear of lint
    Set Top Tesion to 4 ....then....
    Balance Bobbin to suit.

    the looping threads are on the underside as you sew, it is the top
    tension. Top tension ought to be between 4 & 6 (this variation to
    allow for the different weights of fabric in your

    If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !

    sure that when you thread the machine the presser foot is up so the
    thread goes between the discs and not to one side, top tension between
    4 and 6, and that you have threaded through all the guides, including
    the last one, usually on the needle arm, just above the needle clamp.

    may be there is lint trapped between the discs, this will keep them
    slightly apart and reduce the actual tension, sometimes dramatically.

    tensions appear correct, and the thread is definitely in the channel
    between the discs, but still too loose and looping, try raising presser
    foot and remove your thread.

    Now, with a 2" (50mm) wide strip
    piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or
    denatured spirit, gently insert the fabric strip and clean between the
    discs with
    a see saw / to and fro action.

    In the worst
    cases, gentle use of a needle to pick & remove the jam may be
    necessary, but be very gentle and make sure the tension is set at Zero
    and the presser foot is raised, (to
    disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.

    less common, but if the loose threads are on the top, it is bobbin
    tension that is loose, it too may have lint in the spring and be giving
    a "false" tension.

    I would not recommend fiddling with bobbin
    tension without good reason, it may end up with missing small screws
    and spring pieces, however, you can take the needle plate off to clean
    the hook race area (where bobbin case sits)

    ...this is just good housekeeping, my wife does this every time she replaces the bobbin....

    take it out and clean the bobbin case and the fixed metal hook race
    with a small brush to remove lint. If there is a significant amount of
    lint, use a vacuum and small brush to get the worst.

    Then wipe
    all this area with a cloth or cotton bud (Q tip) moistened (not soaked)
    with methylated spirit, especially if there appears to be fine dirty
    deposits....oil and lint combine to conspire against you.

    If it
    seems likely that you ......really .....actually .....need adjust the bobbin case, first check there is no lint trapped in
    the metal spring where the thread is tensioned.

    Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....

    ...the other screw at one end is holding it all together, so is not a tragedy to undo the whole lot and clean it, but
    very gingerly and lay the bits out in sequence and orientation, or you
    risk tearing your hair out !

    ....this is a
    bobbin case from a front loading machine and works in a very similar
    fashion to the top loader with drop in bobbin, again, if you dismantle
    it, take care so you can put it all
    back properly.
    you are certain there's no trapped lint in top tension or bobbin, set
    the top tension to 4 and the bobbin tension to a point where you just
    begin to feel resistance.

    Try using good quality thread of contrasting colours so you can more easily spot the changes.

    your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5
    etc) and sew a sample for a few inches and check the result.... adjust
    the bobbin tension screw very little at
    a time, perhaps 1/16 of a turn.

    may find you are playing with this balance for some little while and if
    you are putting the needleplate on and off each time begin to think it
    cannot be correct to do is,
    and eventually, you
    do get a "feel" for the correct tension and then it happens quite a user you won't be doing it very often unless there is
    lint built up (or are there small hands at work around the house !?!?!)

    you live near the ocean as we do, salt air can play havoc with
    metalwork inside and out, so to help minimise this, keep a few small
    packets of dessicant (silica gel) in your machine case ? then make some sort of cover !

    Same applies in any damp or humid environment, keep your machine dry and dust free.

    for a proper full service every couple of years (more often if heavily
    used) and if you don't use your machine for a few years, be aware that
    old oil will dry out and combining with
    dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)

    it is worth spending the time, energy and money on making something
    that you would like to give lasting enjoyment......use quality thread, may seem to cost a little more at the
    time, but the
    results, ease of use and added longevity will be worth the extra, and
    as a bonus, your tension troubles may be fewer and further between,
    because there is a more consistant diameter with good thread, and less
    compensating to be done by your tension plates and less thread breaks !



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When was your car last serviced ?

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