The 900 Nova was once a popular portable, and there's quite a bit of help to be found on the web. It's very much like the 730 and 830, same bobbins and bobbin case.įor the stuck part, turn the hand wheel, inspect all moving parts for anything unusual piece of thread, a broken off needle tip, I'm sure you have cleaned under the feed dogs and bobbin case by now. I think the bobbin case has the BB stamp too. It's not possible to insert the needle any other way on these but make sure you use regular 705 needles, and correct bobbins (flat sides and usually has a BB embossed in the metal some where). The needle goes in flat side toward the back and threads front to back. On the Nova you place the spool in the back and follow the thread route, the top tension is a groove in the top of the machine, then down to the hook shaped thread guide, and up to the take up lever then towards the needle. Threading is very similar on all the vintage Berninas, those I have seen at least.
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