Trouble Shooting Bag Closer Bag Making Sewing Machines

First level problems are solved by checking Number 1 to 3

1. Check threading Needle
2. Check threading Looper (on double thread machine like the US2200 or Newlong NP3(ii)
3. In case of a problem with the stitch replace the needle first. This will solve most of you problems


  • To keep your machine in shape oil it at least once a day after using it. refer to oiling diagrams
  • Use a Spring balancer for easy working and less damages to your machine.
  • When storing the machine put it back in a plastic bag. The machines are always leaking oil.
  • Use the correct type of oil. If you are not certain which oil please contact us
  • Use the right tools for the project. Tools that do not fit properly can cause extra problems
  • Replace items that wear out (like needles and looper, Feed Dog, Air cilinder etc.) on time

If you have questions on a problem or you need to request a repair please contact us


When a Looper is used for a long time, it’s thread eyelet is worn and a groove is produced due to the repeated passing of the thread. It is also subject to damage due to a bent needle hitting on it. All of these cause thread break. Worn Looper point is a cause of skipping stitches. If the looper shows one of these signs, replace it with a new one. To replace, Losen two set screws.

Caution: Use tweezers to remove thread jams from looper.
Facts about a 2-thread looper.
if the looper is not threaded through both loop holes, then the air-stitch is not made. Your bag or material may unravel it selfs. Air stitch of at least 3 cm should be present to make a strong connection.
when using different thread (thinner or thicker) in some cases it is needed to adjust the looper setting.


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