Is this a Singer 15-91? I think a connector is missing so im not sure
 

Some pics attached, I want to re-wire it and clean it up. From googling I think its a 15-91 because of the motor on the side and no belt, but all the pics I see they have a connector on the back where mine just has an empty screw hole?

To me it looks like a Singer 15-91. If so I have connector and the plug for it if you want it.

Awesome, I thought so but wasn't sure because of the missing connector. I'd love them if you have them! How much do you think?

I sent you a private message. Check you in-box please.

Also, the big round plugs coming down on each side of the wheel are to take the very bottom lid off and re-grease up in each one. Then put the lid back on. I'm sure you know this. LOL

I just took apart the wheel and started cleaning and saw that! The inside of the wheel is disgusting with gunk, like a hardened grease that I've been slowly working out with a toothbrush lol.

Do you know what kind of grease I can use to put in the big round plugs? The manual says Singer Motor Lubricant, but I imagine something else would work too.

Also is it okay to oil the worm(?) Gear that rotates, I put some in last night while breaking up the gunk on it to get it moving, but then I thought oops is this part of the motor, maybe I shouldn't use sewing oil

Turn your eyes towards Meckey2's words at post 91 and 93 https://www.quiltingboard.com/vintag...t274661-4.html you may have to go thorugh several pares to find them..

Leon, this is a link to #91 https://www.quiltingboard.com/vintag...ml#post8184102
To make a link to a particular post, click on the post#. This changes the URL to that particular post.

Thanks, Nancy.

This is probably the most thorough tutorial for rewiring a 15-91. http://vssmb.blogspot.com/2012/01/co...ted-motor.html . He takes you step by step through it all. Don't use sewing machine oil in the gearworm to break up the old nasty grease. Rubbing alcohol will work great.