Janey how do you tell that it is at 1:00 o'clock. Are you looking at the right or left of the release clip (would that be the right name?)
This could be from a 237 as I have the manual and some other parts for one that I picked up at a yard sale. I have tried to find info on a 237 and it doesn't even seem like the machine exists. I looked at 18 pages today of parts numbers and these ones don't show up there either.