This Janome lower looper 784083606 is the most common type. In the sense that it fits the widest range of Janome overlockers. Always take care when fitting a new looper. Make sure the timing hasn’t slipped on the overlocker. The two loopers should not strike each other. And they should not hit the needles.
This Janome Lower Looper will fit Overlocker models,
1200D
134D
204D
234D
304D
434D
634D
6234XL
644D
744D
8002D
9102D
9200D
DM234
