Parts for 1034D brother serger

First re-thread the machine starting with the upper looper(3), then lower looper(4), then the needles(2,1). If that doesn't fix it, it may be a matter of loosening the needle tension. Lastly slowly turn the handwheel and see where the loopers cross. The upper looper should come in just behind the scarf of the lower looper without any contact on the forward motion. Otherwise Your needlebar height could be off. Timing a serger is a very precise process and making adjustments could throw it out even further.

Quite possibly the machine is not threaded correctly, the tension setting for that looper is too tight (could be the upper looper tension disk is stuck or dirty causing the thread to hang), or the thread is looped around something like the thread tree.

Replace the needles. Remove all the thread and re-thread from the beginning. Be sure to RAISE the presser foot before threading. Make sure to thread the threads in the correct order.

Serger Troubleshooting For Any Serger Serger Machine Series Ep 4

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Looper Feed Assembly, Brother #X77775-001
Item # X77775-001
Condition: Brand New
No Longer Available http://www.sewingpartsonline.com/brother-1034d-sewing-machine-parts.aspx

The upper/lower looper need realignment, requires a qualified technician to do this.

You may have re-threaded in the wrong order. The correct order is upper looper, lower looper, right needle, left needle. So 3,4,2,1 (if numbering left to right)

Right from Brother at 1-800-276-8437 you can order it. Also, www.sewingpartsonline.com for around $7. I think that your Serger is a 1034D, are you sure that Brother didn't give you one in your accessory bag?

I found that I had to remove the stitch finger to thread the machine properly. Do remember to re-install it before starting to sew. If you are using 3-threads only, then remove and store the stitch finger.
Puzzled that this instruction is not in the threading section of the manual.

I had the same problem with the blue thread- it would sew and inch then pop- mine worked wihtout breaking after I re threaded in this order: green, blue, red then yellow

Find a sew & vac shop near your house they usually have sewing machine parts

call brothers hot line 1-901-373-6256 tell them your problem and part no, if you know it if not they should be able to help you