Question about Janome 1600P-DB Mechanical Sewing Machine
Try adjusting the top thread tension for the loops
try changing the needle
and see if that help any if not then take the machine back and
tell them what the machine is doing
if the machine was adjusted, then they should have checked the
stitches to make sure that the stitches were normal both forward
Posted on Jan 05, 2013
Testimonial: "thank you for such a speedy reply. I think I will take it back to the dealer instead of trying to adjust it myself. they should have adjusted for backwards as well as forward sewing. thanks again."
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Posted on Jan 02, 2017
SOURCE: bobbin thread bunching
I agree with brodering about the damage to your bobbin case, it should be smooth all over, as the thread travels across the top surface to form a stitch, and the small step on the underside locates it as the hook spins underneath.
Needle strikes often compromise the surface, as will the hook colliding with the under surface... and although it is possible to gently polish off the damage with fine grain wet & dry (black) sand paper (emery paper) there are limits to the success depending on the degree of damage.
While on the subject, ensure the bobbin case and hook race beneath are clean and free of lint or thread.
For a guide as to setting tensions and the rest, look here
Posted on Feb 24, 2008
SOURCE: threading a sewing machine
What do you mean you are unable to pull the bobbin thread through, elaboration would help solve the problem...
I suspect I'm having the same problem with you if it's anything to do with the top thread looping around in the bobbin holder.
Posted on Feb 26, 2008
It sounds as though the thread is jumping out of the tension assembly. The next time this happens, do not raise the presser foot before you do the following.Cut the thread above the needle and pull on it.If it is working properly there will be tension on it.If it is not working properly, the thread will pull through very easily.If the thread is coming out of the tension , either it isn't threaded correctly or you may need to wrap the thread around the bobbin winder guide to keep it from coming out.If you wrap it around the bobbin winder guide reduce the tension to around 2 , 3 or even less.
Hope this helps.
Posted on Jan 17, 2009
First, in order to get the bobbin thread up, you have to turn the wheel backward, not forward. If you try this, and it is not the problem, keep going.
Next you need to check the needle. There is a screw on the right side of the needle carriage right underneath the underside of the top...unscrew this and the needle should come right out. The flat side of the needle shank should go towards the back of the machine. If it isn't, switch it so that it is and try again.
If this doesn't solve your problem, what has happened is that the gears in the machine have gotten out of alignment. There is an easy fix:
Take off the plate that covers the bobbin chase...there are two screws one on each side. Remove these...you need a stub screwdriver, because regular ones will not fit under there.
Remove the bobbin carriage and the bobbin, making careful note of how they fit back in. Take a picture before disassembling it so you have a reference.
The part that carries the thread around the bobbin is still in the machine. Turn the wheel and you will see it rotate. What has happened is that the needle is not going down in the machine at the right point because someone kept sewing after it jammed and one gear kept going while the other one didn't and now it is out of alignment. These machines have plastic gears and the can slip past each other if you aren't careful not to stop immediately when they jam.
To fix it, you are going to have to do some trial and error. Grab the rotating part of the bobbin chase and hold it firmly. Rotate the wheel forward until you hear it click once. Then rotate the wheel backward again and see if it grabs the top thread. If it doesn't, repeat holding the bobbin chase and turning the wheel forward until it does.
Once you have the gears basically aligned, you will need to reassemble everything. Put the face plate back on and put at least one of the screws in all the way. The face plate holds the bobbin chase in correctly and if you don't fasten it it will not work correctly.
Now try sewing. If it starts to jam, stop immediately, cut the threads and look at the back. If it's a loopy mess, you are going to have to dissamble as before and again grasp the bobbin chase and turn the wheel forward one more click, then reassemble and try again. Eventually, you will find exactly the right alignment and the machine will sew perfectly.
I just had to make this fix on my own machine...I didn't want to take it in for repair because the bench fee alone would cost as much as the machine did!
There are some great video's on YouTube for help with threading the machine...look for StampTV and you should find them. Good luck!
Posted on Apr 21, 2010
I was having the same problem(s) and I loosened the tension on the bobbin case and switched to prewound paper bobbins and everything sews beautifully.
Hope that helps!
Posted on Sep 08, 2010
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