How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Chester Your Own Question

Chester
Chester, Sewing Machine Repair Expert
Category: General
Satisfied Customers: 790
Experience:  Sewing Machine Repair Expert
69243481
Type Your sewing machine repair Question Here...
Chester is online now
A new question is answered every 9 seconds

I have a Pfaff 4.2 quilt expressions. I am currently free

Customer Question

I have a Pfaff 4.2 quilt expressions. I am currently free motion quilting and it was working great last week when I used it. Today I turned it on and started quilting. At first everything was fine, but then it started skipping stitches (holes punched through the fabric, but bobbin thread not catching) and then a few seconds later the top thread would break (I am using Mettler cotton silk finish thread with a 90/14 universal needle.) I have rethreaded the top several times, changed the needle, cleaned the bobbin case, changed the bobbin thread, but the same problem keeps happening. My machine was last professionally cleaned one year ago (almost exactly), but my local shop (Wellesley Massachusetts) recently closed and I don't know where to find another technician.
Submitted: 4 months ago.
Category: sewing machine repair
Expert:  Chester replied 4 months ago.

Hi and welcome to Just answer.

If you need a local repair shop just give me your location and I will try to recommend you to the nearest repair shop base on my list.

Initially, try this procedure below to possibly fix your machine.

It sounds like you have timing issue. Please refer to my below solution to check/repair your machine.

Remove the bobbin case and bobbin., turn the machine so you can see the needle as it enters
the area where you removed the bobbin case. (for clarity, this area is commonly called
the hook and race area) as you turn the handwheel, you will see a curved or semi-circular
piece turning towards the needle. This part, called the hook will have a point on it
which should pass behind the needle approx. 1.5 to 3.0 mm above the eye of the needle.
If this is not the case then either the needle-bar or the hook are out of timing.
This applies to all sewing machines of any make or model. This can be a simple repair
if the needle-bar is too high or too low, but more difficult if the hook is incorrectly timed.

If the needle bar is out of time you can fix it yourself otherwise, hook timing is definitely a high level repair that needs a professional approach.

For needle bar height, remove the cover (face plate) then you will see the needle bar. There is a screw there that need to loosen in able to adjust higher or lower the the needle bar height.

Please note: Mark the original position of needle bar. If still persist, you have to send your machine to repair shop or dealer for fix the hook timing.

Hope this information will be helpful.

IMPORTANT: RATING IS REQUIRED!! If you are satisfied to my answer please don't forget to rate,,EXCELLENT OR GOOD rating and BONUS are greatly appreciated...