Fuel pump kits may still be available. Some workarounds are to replace with
a common modern design or get membrane material and improvise. Later motors
are not my strong point so better advice should be sought. When you attend
a meeting of like minded folk the interchange of ideas and suggestions expands
options and makes the murky clear. If a person is interested in seeing one old
outboard back to work chances are there will be others. More than a few old
outboards are out there looking for new and more welcoming homes.
Beware: collections can become addictions...the test is would you sell one
you have restored or intend to restore.
Louis