Consew 206rb-5 ripping top thread/skipping stitches

[PistolP]

Hello everyone! I have been reading here for quite some time and finally created an account, great site! 

Down to business,

I recently picked up a consew 206rb-5, I cleaned and oiled the machine and have gone through some adjustments following the manual to a T. My machine is occasionally skipping stitches (maybe 1 in every 10-15 stitches) and the machine occasionally is ripping the top thread as it pulls back up through the material. I am using 69 thread with a size 21 needle. Typically sewing approx 1/4" thick veg tan leather. I would like to get this fixed as I have a family sew servo motor and 6’’ hand wheel on the way from Bob at Toledo industrial

Other info:

Needle bar height is set per manual

Hook timing is set per manual

Hook spacing to needle set per manual

Needle inserted and aligned properly

Feed dog alignment set per manual

Needle alignment with feed dog set per manual

 

Any help is greatly appreciated. 

[Wizcrafts]

Check your check spring threading.

[Wizcrafts]

Is there a reason why you posted this topic 5 times in a row?

[PistolP]

Wiz,

thanks for the reply!

I believe I have the threading correct on the check spring and have the tension on it set properly. I will go take a few pics for confirmation that it is threaded properly

[PistolP]

As to the multiple posts, I am doing this on my IPad, when I typed the thread and hit submit it came back as showing I did not have all required fields filled in. I double checked that they were and submitted again (I tried this a few times tweaking my post each time and it finally went through) this was my first attempt posting here so in the future if it happens again I will wait a few minutes in between before trying again. 

[PistolP]

Thread path

[Wizcrafts]

It is usually unnecessary to feed the thread over the positioning pin on the tension disks. I would only do this if the thread kept popping out of the disks and nothing else worked. That pint is really only there to keep the disks from rotating as the thread feeds around them.

The check spring looks properly threaded. But, make sure you hear a click when you load the thread around it and up. You might try lowering the stop bracket under the check spring so it travels further. Its job is to keep the threat taut until the needle has gone through, or at least into the material.

[kgg]

Some of your problem also be that you are using an oversized needle for your thread size. Try a size 18 needle.

kgg

[Colt W Knight]

I have a 206, and it is super sensitive to needle alignment. 

Also, I have had to take the tension discs apart and clean/polish the inside to make it sew correctly. 

[JLSleather]

I had one of those machines, and when I thread it I always skipped the center hole on that flat bar -- just wasnt' necessary.  And that is a pretty big needle for #69 thread, but I wouldn't think that would cause fraying.  Only post to point out that sometimes the problem is the THREAD you're using.  I'd try a different spool -- if you still have the same issue, you've eliminated one of the possibilities.

 

[PistolP]

Thanks for the replies everyone! 

I took yalls advice, I re-threaded skipping the center hole on the flat bar, made sure my thread didn’t go over the pin on the tension discs, and lowered the stop on the check spring to where it lets off after the needle is in the material. Also I misspoke earlier saying I was using 69 thread I’m actually using 92 thread with a 21 needle. Making these tweaks made my skipped stitches go away, however my top thread is still fraying. After doing inspection of my threadpath per wiz’s instructions I believe I found the issue. My thread guide has a notch worn in it and it is the only thing I can imagine it being. Below are some pics of some stitching,the notch in the guide, and the frayed top thread. 

[PistolP]

Also, I found these two videos on YouTube. Made adjusting all aspects of my machine very easy. Figured I would share with everyone.