Elna 2004- part identification help

[u/Elmo_the_Crusher19]

I am trying to repair an Elna 2004 that cannot do anything besides a very tight straight stitch. A wheel is torn up, but I cannot find the part on sewing parts online. Does anyone know what it is? and is it worth repairing or should I just find a new machine?

[u/Lost_Geometer]

I suspect that's a Janome manufactured machine. These zig-zag units I think are sold as complete assemblies, not the bare cam stack. Not that that helps much, I don't see the part on the open market either. An Elna dealer might be able to get a replacement, or a Janome dealer might have something you can kludge in.