It's a standard bendix-type gear drive. Very straight forward, unbolt it and off it comes. Franklin gave up on chain-drive starter/generators after the series 9.
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Steve Braverman
Aura Vincit
1932 Franklin Airman Series 16A Sedan (The Driver)
1933 Franklin Olympic Series 18A Convertible Coupe (The Project)
1932 Plymouth PA Sedan (The one with water in it)