OK the(lock) Nylon taper and steel ring are in place. Under the lock ring on top of the impeller there flat and spring washers, are they in place?
Everything under the flywheel looks great, this isn't an electric start motor/no charging system under there, so can't see any reason the stator would
ALL!!!! Older outboards need gas/oil mix.
Some newer 4 strokes don't.
From the serial# I believe it's a 75hp 1976
Check o-ring in fuel line fittings.------Check fuel pick-up tube in your tank.
Inspect the stuff under the flywheel visually.-------This stuff is very reliable,---------Install a new powerpack and likely the motor will run again.