Hi My name is Karyn my email [email protected]
I can help you thread the Elna over locker. Write to me at my email. Once threaded with 4 dirfferent colours find a scrap of medium weight fabric and sew few inches/ 10 cm or so, it is then easy to see which threads appear loose and which appear tight. For the actual overlocked edge the two threads ought to weave together and meet eachother on the cut edge of the fabric.tighten on colour and loosed the other until they meet on the edge. with the outside needle and the (under) 'arm' below which make the 'chain' seem you will also see using diffrerent coloured threads, if the chain is loose tighten the tension for that thread - usually the 'arm' tension. For any further help email me as I may not find my way back to this site.
If you can help me I'm currently looking for a Blade for an Elna MO 104 over locker.