Threading a Bernette four thread overlocker / serger.
Covers model 134DL and similar models.
This video includes a timed speed run of threading to compare this more traditional serger threading with the Babylock Jet-Air threading system.
0:00 - Introduction.
0:15 - Thread stand and mast alignment.
2:10 - Installing threads and threading mast.
2:58 - Threading top thread guide bar.
4:30 - Upper looper threading.
8:49 - Lower looper threading.
14:16 - Needle threading.
16:58 - Closing covers and preparing for test sewing.
17:57 - Threading speed run.
23:50 - Conclusion.
Start by making sure the thread mast is positioned properly. Thread the upper looper, then the lower looper and then the needles.
This model can be used as either a four or three thread overlocker / serger.
To use the machine in three thread mode, just remove one needle and its thread.
Tools required - Tweezers and scissors or snips.
Troubleshooting:
Make sure to have good needles installed. If you're unsure, replace them with brand new ones.
Check the blades are cutting well. Use several strands of thread and put them under the top blade and turn the hand wheel until the blade comes down and the threads should be cut cleanly. If not, the blades will need sharpening.
Double check the treading and check the tensions.
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