https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1963&hp=10&model=10302E&manufacturer=Evinrude§ion=Fuel+Tank
#17, one ea.
#21, two ea.
#18, two ea.
Above are assuming you are going to fix both pins (you should).
#36 is the oring that goes in the fuel connector.