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Hi Debbie; The #9 machine was made from 1887 - 1895. Th3 D-9 replaced it in 1895, but all D-9s have 7 digit serial numbers, which start around 2,200,000 & go up to just short of 3,000,000. Most #9 machines will have a last patent date on the right slide plate of March 25, '90. With that low SN, your machine "may" be pre-1890 & have only earlier patent dates. I have done nothing to my machines other than clean them. I have had pretty good luck using a soft micro-fiber cloth wet with sewing machine oil. Go softly over any remaining decals as they are quite fragile. For whatever reason? W&W decals seem to be particularly notorious for having bad decals. The proper needle for the #9 is a 126x1 (Singer designation) or a Boye #27.? This is a round shank needle, The Boye #18 is the same needle with a flat on the shank to make it self- setting. Some #9 machines will clamp the needle with flat but some won't. I have 3 #9s and of these only one will clamp the needle with a flat. I do use the DBx1 needle in my #9s. This is a round shank needle but is 5mm (0.197") shorter than the original. It has to have the eye aligned & then be pulled down in the clamp around 3/16" & then will just sew up a storm. I was fortunate to get with my machines enough bobbins I can get by. Would like a few more but they are getting a lot higher priced any more. They are a round bobbin having a bagel shape. The #9 & the D-9 use similar bobbins of the same diameter, but the D-9 bobbin is a bit thicker giving it more thread capacity. They can be told apart as the #9 bobbin has completely smooth sides while the D-9 one has a single hole in each side down near the hub. I put up pictures of all the bobbins & cases for all the W&W family machines in our photo section here;
Also in the files section I have a write-up on these bobbins giving dimensions here; And one on the needles here; I hope this is of help to you, but do feel free to ask any questions you may have, that is what we are here for. Miller/TN ?
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