OurWorkbench

The last White I posted, a model 41, was the first White I'd seen up close. Now there is a second White to work on, a White Rotary 11. While the casting and cosmetic aspects of it are different, internally the model 11 seems mostly identical to the White Rotary 41. A picture below shows the machine.

(White Rotary 11 - Front View)
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It is different in one respect. The clutch is a type that I've never worked on before. It doesn't move very well. It feels like it needs cleaning and oiling. The large screw in the middle of the knob does not want to turn. I'm thinking that it is just rusty, needing solvent and a little coaxing, but can anyone confirm that this screw is how one begins disassembly?

(White Rotary 11 - Clutch/Stop Motion)
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Advice from anyone would be very much appreciated.

John