How to fix my CB 4500 needle issue?

[brmax]

Is there anymore results here on the needle position. Paticularly in and through the hole and feed dog, as you know it should be centered. Im curious of the above when the needle is not in a bind below. 

Those tips on checking the shuttle and shim area for debris is a great check, keep us posted. Its your lucky day with all these tips being posted, and before any above references to look at.

 

Good day

Floyd

 

ps:   Item of reference pg. 3 items 30 & 31

  http://leatherworker.net/forum/applications/core/interface/file/attachment.php?id=103092

Edited September 4, 2018 by brmax

[koreric75]

22 hours ago, Pib said:

Hello 

I need your help to fix my issue on my CB 4500

The needle touch this part (behind red arrow) and cut my treat.

I have followed the awesome Uwe video and check the hook timing.  It seems to be ok, but no way to know how the adjust this small part

Any idea?

Thank for this

David from France

Have you checked these two screws (extra red arrows)  there should be springs behind them and not torqued down tight...the cb3200 likes them just backed out enough to see the first coil of the spring between the plate and screw head.  also it's hard to tell from your pic if the hook is in the correct position, but if that is needle bottom dead center the thread cast off area? i think looks advanced, attached a link to another vid, if you notice the screw heads are backed out and you can just see the first coil of the spring behind...

 

[JLSleather]

2 hours ago, koreric75 said:

i think looks advanced, attached a link to another vid,

See, that's what I was thinking, but he said he "did" the timing. In this video, the position of the bobbin / shuttle is clearly not the same as the OP's pic. Compare position of the shuttle ...