This SAE Standard specifies basic tolerances and dimensions for inboard propeller-shaft ends, propeller hubs and keyways for shaft sizes 3/4 in (19 mm) through 8 in (203 mm).
This SAE Recommended Practice covers distributors used on marine engines. NOTE: This includes devices referred to as high voltage switches used for distributing high voltage to the appropriate spark plugs but does not contain any crank position sensing function.