Yes, the serial number is the one under the motor. I couldn't quite see the first couple of digits, but it looks like there is one or two digits before what looks to be __X79836. The model would be the numbers before the "X." They are very similar based on my 41 & 43 machines. You didn't say whether you got a manual and attachments with your machine. If you need a manual, there are ones that should work at
https://www.singer.com/support if you put
wrotary in the box next to "View Manuals." That should bring you to page
https://www.singer.com/search/support?title=wrotary I would suggest downloading both of them. One is for the electric and the other is for a treadle. The treadle one has a little clearer pictures for the threading which would be the same.
These types of machines generally have a flat spot on the pulley which makes sewing quite noisy. It is suggested to put something between the machine and the motor to keep the pulley off the hand wheel while not in use. I'm not sure if there are replacement ones available now or not. Someone chose to use a rubber plug to create one at
https://sewwhatman.wordpress.com/201...-drive-wheels/
Here are some other threads about machines near the same. I think one of them, unfortunately, is missing Macybaby's photos. Perhaps they may have some helpful information in them. The first one John did and it has been a while since I have re-read it. The others, I just skimmed through.
White Rotary 41 - Several Interesting Differences
"electric" White Rotary no. 43-18476
White Rotary 43 - Project of the Day
Domestic Rotary 153
Also, since some are older, they may have some broken/bad links.
Something that I was reminded of is that these machines only need oiling with
sewing machine oil -
No grease. Probably, needs a lot of oil to get the old gunk out and new in.
A reminder about these machines is that if turning the hand wheel (like when oiling) that the hand wheel rotates goes in a clockwise direction when you are looking at it from that end.
I don't think you really have to take the machine out of the cabinet, but it might be easier to hit all the spots. If it will rotate the hand wheel a full revolution and the needle moves, then I think if you have a Zoom Spout oiler, you should be able to get to all the spots that need oiling.
Thank you for the pictures. You can make them larger
.
Janey - Neat people never make the exciting discoveries I do.