Seiko Cw8B {Techsew2700} Centrifugal Safety Clutch Reset

[shadowryder]

Hi guys,I have recently bought one of these machines here in the UK.{used}

I am slowly getting used to it but havent made anything with it yet.

Any way whilst running some practice pieces of leather yesterday the machine jammed up and stopped,

on investigation I found that a small screw had come loose on the shuttle and jammed up the mechanism,I reved this and screwed it back into where it came from thinking right ok again,

How wrong could I be????

I found that while the machine ran the shaft that runs the shuttle does not turn anymore and following it back it gos into this centrifugal clutch which having read a bit is a safety clutch which kicks in to prevent damage,

Anyhow I downloaded manuals etc I could find on the web but none of them tell me how to re set this clutch,,

SO can anyone on here please Help me,

IN the SIMPLEST terms possible cos I aint a techno head.with pics would be great.

Thankyou in advance.

[Gump]

There should be a button on the arm, press and hold it down while rotating the machine backwards until the button drops down then rotate forward until it clicks and the clutch should be reset.

[Gregg From Keystone Sewing]

...

[shadowryder]

hi guys have tried that its not working "clutch" is just turning round the shaft and shaft not movingclockwise or counter CW is the same.

thanks for your posts.

[Gump]

Flip the machine back and check the belt and clutch assembly. It is possible to break a belt (but unlikely), and it is possible that the little spring that pushes the locking dog in place broke or came out of place. you can also check that the toothed wheel that the button engages is not just spinning free on the shaft.

[shadowryder]

The small wheel on shaft is tight and connecting on button but the shaft is not turning when the clutch turns with the belt.

do you have a diagram of how small spring etc is attached please as i found the spring fipped off in bottom of machine space,

sorry for being a bit dumb on this but I am a bit of a technophobe.

thanks again.

Edited February 28, 2015 by shadowryder

[shadowryder]

OK Guys

thanks to your tips and this video i found {

} I have managed to re set the clutch and basically re set the timing on the machine,

It is now sewing BUT I am now finding that I have to pull the leather thru the machine as even though the top and bottom feet are moving they will not feed the fabric thru on its own forward or reverse,it sews in n out the same hole unless I pull the leather thru by hand,

HELP PLEASE,,

sorry for being a dumb ass but I am trying to learn,,,

thanks again.

[catskin]

I am not familiar with that exact machine but it sounds to me like something is not letting the foot go all the way down to grab the material in order to move it.

Or is it possible you have accidently got the forward/ reverse in the middle so it doesn't move the material?

Edited February 28, 2015 by catskin

[shadowryder]

the top foot is leaving quite a deep impression on the leather when going up n down also I have tried to alter the foot pressure softer and harder without any difference.

I do not think it possible to "neutral the forward reverse on this machine but May be so will try to check it tomorrow.

Thanks

any other suggestions gratefully received

[Constabulary]

Pulling material through makes no sense except you have a darning machine. There actually is a variant of this machine which is made for darning. Is it really sewing when you pull it through or is it just making stitches w/o thread? Maybe you can post some good detailed pictures of your machine and maybe some sees right away what is wrong with it...

ATM I only could imagine thta the stitch lenght adjuster is the problem

[shadowryder]

Well not sure how I did it but I got this working properly again now,

mainly thru fiddling and guess work and youtube but I got there she is now working fine.

Thanks for all help advice.

JJ

[gottaknow]

It's weird reading through a thread and coming to a video, (not remembering having made the video yourself) and then hearing your own voice. Glad it was of some use. It takes some time to become familiar with your machine. Have fun!

Regards. Eric

[shadowryder]

thanks eric, very useful.