Jump to content
VG2013

Cobra 4 Feet Rubbing Together

Recommended Posts

Recently got a Cobra 4 machine, and slowly figuring out how to work with it. Today, I ran into an issue.

The machine came pre-fitted with a left toe presser foot, which sat a little bit far from the center presser foot, but it didn't bother me. Today I tried fitting the right toe presser foot, and the double toe presser foot, and both of them rub against the right side of the center toe presser foot. The rubbing is pretty severe, enough "lock up" the machine when the screw holding the presser foot is tightened all the way.

From the looks of it, I'd say that for some reason all presser feet are angled a little, causing the left side to sit far from central presser foot, while the right side is flush (and pressing against) the central foot.

I think, by filing down the presser feet point of attachment a little I'll be able to even out this issue, but it would take quite a bit of filing (at least a millimeter or two of metal will need to be removed to shift the whole thing a little to the right. And before I do that, I wanted to check if there's any other way to solve this, perhaps with an adjustment somewhere?

Thanks!

Share this post


Link to post
Share on other sites

Share this post


Link to post
Share on other sites

  1. Remove the top thread completely.
  2. Remove the front face plate by loosening the two large screws holding it to the body (upper right, lower left).
  3. Raise the presser feet with the hand lift lever.
  4. Locate the presser foot bar (to which the outer feet are connected.
  5. Using the hand wheel, position the presser bar so that you can access the screws that secure it in position.
  6. Use a screwdriver or hex wrench as needed to loosen the screw or screws that clamp the presser bar.
  7. When they are hand loose, without raising or lowering it, rotate the bar slightly until the toe or toes are facing straight ahead. Test this by installing the double toe foot.
  8. With the toes facing true forward, lock down the screw or screws on the presser bar.
  9. It is also possible that the inside foot is screwed on at an angle. If this appears to be the case, loosen its screws (slotted screw or Allen screws) and turn it until it faces straight ahead, then lock it down.
  10. Using a precision oiler, place a drop of oil into every little oil hole you can find on both ends of each moving shaft and crank inside the face area. Do this internal oiling once a month.
  11. Carefully replace the faceplate, making sure you get the black lever with the slot cut in the end directly over the pin on the back of the head. That pin is connected to the foot lifter shaft and causes the lever to move up and separate the top tension disks.
  12. Tighten the faceplate bolts and thread the machine. The feet should all face straight ahead now.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...