Replacing drive shaft gear
 

Hi all, I’m knew yo this site and would appreciate any advice. The slide hook drive shaft is won’t disengage from the hook drive gear in spite of the set screws being loosened, removed along with the retaining ring. What am I missing?
I’ve included a picture just in case.
Attachment 639355
thanks in advance,
LMG52

Whoops, the machine is a Singer model # 6235.

I would think to get that gear off you would have to remove the belt, at the right in your picture, and slide the shaft from left right which hopefully would let that gear at the left end drop out. All the gears likely have two set screws; you mentioned removing a screw on the left end gear, look for another if you removed only one.