ChapinLeather

ok will look at that today and see. thanks

Is it possible to use a liquid wrench on that screw? I can't budge it, and I think I wore off a little bit of the hex wrench at least I hear a snap but the bolt still doesn't move. I'd have to get some I don't think I have any hanging around.

Thanks, I'm about midway down the list and have located the hex wrench... thanks I'll print this out with and attach them to the illustrated manual pages. gonna give it a try.

Thanks Uwe yes I think it is pretty close I did manage to locate the hook driving shaft crank screw and so now I'm looking for the hex wrench size I also have to locate a regular wrench since I have a good bit of arthritis in my hands so it is hard to get much muscle behind the thing. getting there but I believe it will work, hope so.

I think it is needle to shuttle timing like I thought, I have to look at it some more and see if I can figure out where the hook driving shaft crank screw is located and if I have the right set screws, then I guess it will either work or it won't. crossing fingers.

Thanks Guys, I've contacted a couple of people but apparently I'm not able to describe what the problem is. Thanks Uwe, at least I can know what the parts are called, isn't exactly what I thought I was trying to do but I'll try looking at it awhile see if I can understand how to adjust things. A good part of the problem with fixing without illustrations or a video is the lingo, I'm not fluent in machinery, so I don't know how to describe what I'm seeing. I tried to put a video together but it bounced all around so I'm not sure it would be much assistance in determining the problem. I'll keep trying.

Would really appreciate some help in resolving a problem that I've been having with my Cobra 4 stitcher. I know I probably am not using the right words to describe a problem that I'm having but my bobbin hook doesn't line up with my needle as the needle starts to come back up and I'm having a problem with skipped stitches. My hook isn't lined up and I don't know how to move it into the right position. The bar holding the needle is in the right place when it is in full up position, but the hook on the bobbin assembly isn't and I can't move it either... so that is my question how do I line the bobbin hook up so that the timing of the bobbin is correct. I am just trying to get it into proper position to correct the stitching problem Thanks Debbie

Thanks Bob, I spent the afternoon looking at things and orienting myself with all the pieces and I think I understand what you are saying. The belt I think is probably the most challenging aspect for me but I talked via email with Eric this afternoon so I think I'm getting the picture of how to do that. Just remains to be seen if it works afterwards. Think I'll give it a go tomorrow because I'm getting behind on work as well. Thanks Debbie

is there a guide on how to actually replace the motor? ie which screws to unscrew first etc... 12 pounds will pretty much be my limit in holding in place so I would like to NOT drop the motor before it is installed. Thanks

I've had some of the same problems I haven't worked out everything yet, but I did manage to stop breaking needles and ruining leather. Part of my problem seemed to be the type of leather I was using. I do notice that it works very well on vegetable tanned leather and not as well on naked leathers. It does seem to have a problem with making the stitch look both the same on the top and bottom of the stitch although I've tried adjusting it and tweaking it all over. Part of the problem it seemed was that because I worked with other finishes the leather would be sucked down with the needle and as the project grew it seemed to pull needle around. My solution was to loosen the tension a lot! then gradually tighten (although I still haven't been able to match the top and bottom stitch). I added a box to extend table to lighten the pull of the weight of the leather and I also have used hand stitching in those areas where I seemed to have trouble or hand crank lifting the item to relieve the pull. It isn't a perfect solution and I still am having an industrial machine repairman come in and help me make adjustment, a fix a few things for me, if I get a moment of time to stop working on projects, until then I'm just making it work as best I can. I can say this however, the machine goes through a lot of leather, with no problem, and after I did all the above it seems to be starting work with the projects I've been doing. To date I've worked with Buffalo Leather, Mellow tan, and Hair on Calf on this machine. I came here looking for a bobbin winder suggestion so guess I'll get back to that.