Welcome. Did your machine come with a bentwood cover? I'm guessing you need a knee bar to go into the hole in the front. There were two or maybe three different kinds of knee bars for these machines. One looks kind of like a question mark, the other is rather "L" shaped. One has kind of tubular end and the other has a flat end that goes into the base.
Perhaps a few pictures would help (you can only use five pictures
per post). I'm pretty sure if you can get a spoked hand wheel, you could make it into a hand crank machine. However, the cover may not fit if you did that. If your machine has a three pin plug like is shown on page 15 of that manual then you should be able to find a modern foot controller with plug that will work.
We like pictures. In order to post pictures on Quilting Board, you will probably need to reduce or compress the picture to a
file size that is smaller than 2MB. How to post images can be found at
https://www.quiltingboard.com/attach...020-01-17-.pdf
Don't forget to scroll over to the far right to find and click on the "
Upload" button.
I have found that only the big red "Reply" button or "Quote" work to give me the paper clip icon to work for adding pictures.
https://www.quiltingboard.com/attach...p-location.jpg
Some additional info regarding reducing images at post #4 and images for the scroll and upload button can be found at #5 of
quilt block ID?
Or simply - Make sure pictures are smaller than 2MB
Click on red "Reply" button
Click on the paper clip icon
Click browse - choose picture/s. (only 5 allowed per post)
Once they show up as being loaded, Scroll over to the right side and click on "Upload"
After the pictures show up as being attached, you can close that window and go back to the screen to finish posting your post.
A few threads here on QB that may help -
Accessory hardware inBentwood Case Lid
my NEW 1928 Singer 99.13
Help Please..Singer Bentwood
Actually, the last one is for a 128 - not a 99
Janey - Neat people never make the exciting discoveries I do.