Question about Janome Memory Craft 9000 Computerized Sewing Machine
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Posted on Jan 02, 2017
Hi, Sounds like a bobbin case related problem. Unplug the machine, then remove the needle plate to get access to the black bobbin case. Inspect the underside of it VERY carefully for ANY marks or roughness. You can expect very fine 'scratches', but no chunks or rough bits.Now check the metal rim that the bobbin case sits on is PERFECTLY smooth. particularly look for any tiny burrs on the top or inside edge of the rim, or any sign of a needle hit. Should not be any! If there are, the mechanic shoul fix it at no extra cost cos he missed the problem. Whilst checking the bobbin case, look for ANY marks on the top surface of it. The SLIGHTEST mark WILL upset the sewing. Hope this assists!
Sounds like a bobbin case related problem. Unplug the machine, then remove the needle plate to get access to the black bobbin case. Inspect the underside of it VERY carefully for ANY marks or roughness. You can expect very fine 'scratches', but no chunks or rough bits.Now check the metal rim that the bobbin case sits on is PERFECTLY smooth. particularly look for any tiny burrs on the top or inside edge of the rim, or any sign of a needle hit. Should not be any! If there are, the mechanic shoul fix it at no extra cost cos he missed the problem. Whilst checking the bobbin case, look for ANY marks on the top surface of it. The SLIGHTEST mark WILL upset the sewing.
Hope this assists!
Posted on Oct 22, 2007
The solution that I found last night was the thread tension. I have never touched the dial, only had it set on 'auto." When I started playing with it, I realized the top thread should be really easy to pull through the machine and it wasn't. I started turning the dial (to 3 or 4) and the thread slid through the machine perfectly. No more birds nest! I really thought it was bobbin initially because of the horrible sound it was making.
Posted on Jun 05, 2008
SOURCE: Thread tension?
I own this little gem of a machine. It definitely sews a perfect stitch. I'm assuming you own the green 3/4 size machine as denoted by your product number. The half size blue one pictured is incorrect.
Anyway, this machine sews a perfect stitch, due to the oscillating bobbin. Most sewing machines with rotary (drop in) bobbins don't have an easily accessible bobbin tension screw, which means your fabric is usually slightly puckered. Fiddling with only the upper tension helps very little. This frustrates me to no end for sewing long curtains, clothing side seams, etc. Wrong tension causes them to hang with puckers, making them look awful. With the Hello Kitty 3/4 size Janome, there is a screw on the bobbin case which allows you to adjust for every thread diameter perfectly. Always a perfect stitch, if you take the time to adjust this screw.
To adjust the bobbin for a perfect tension, load the bobbin into the bobbin case and thread it through the guide. Holding only the thread between two or three fingers, let the bobbin case dangle below. This will be slightly difficult, because the bobbin will want to fall out of the case. Don't worry, just don't move it around too much and it will stay in long enough for this test. If the metal bobbin case slowly drops lower, unwinding thread as it goes, the thread is too loose. Tighten the screw on the side of the bobbin case a little (about a quarter turn.)
If the bobbin case seems to be dangling firmly, give the thread a gentle tug, lifting up fairly quickly. If it doesn't release a couple of inches of thread, it's too tight, loosen the screw. You know the tension is perfect when a quick, light tug of the thread releases a couple of inches of thread.
Posted on Aug 16, 2008
SOURCE: won't stitch properly
ever tried adjusting the thread tension control? clean if possible
tighen it more, loose tension adjustment causes loose stitch and tangling of the thread.
Posted on Nov 01, 2008
Remove the needle plate and the bobbin case.
Ensure that the needle is inserted all the way up into the needle clamp.
Set the machine for straight stitch, center needle position.
Slowly turn the handwheel in the normal sewing direction and observe the following hook timing setting:
When the needle reaches it's lowest point and travels up 3.5mm, the point of the hook should be directly behind the needle, or at least within 1 or 2mm.
Another view is as the hook passes the needle, it should pass the needle slightly above the eye of the needle.
If the timing looks good, use some alcohol on a bit of cloth to clean the hook, careful around the tip of the hook as it is very sharp.
If the hook timing is off, you will need to take it to a knowledgeable service person as there are several possible solutions and several other related adjustments which will need to be made.
Posted on Jan 16, 2010
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