The first step in removing the balance wheel (the big wheel on the right hand side of the machine) is to remove the little set screw on the “clamp screw” (or what I like to call the shiny knob wheel).
See that little screw near the top of the shiny knob? That has to comes off before you can unscrew and remove the clamp screw (aka – shiny knob).
Here is a photo after the “shiny knob” has been taken off and showing you the “stop motion clamp washer”.
Experience with refurbishing my Singer 15-91 has taught me that this little washer can be a royal pain in the butt if it isn’t put on correctly. If you look closely you will notice that there are 3 little bumps the front of the washer and 2 tabs that tip away from the back. Noticing these things will be handy during reassembly (as will photos).
After removing the washer you can then pull off the balance wheel. See all that ugly brown goop on the wheel and inside the motor gear? That’s 60+ year old grease. Since it is now the consistency of crystalized molasses it will need to be cleaned out before this baby will purr again.
Tomorrow I’ll finish disassembling the balance wheel.