62 speeditwin seal

[kodiak62]

I am trying to replace the lower crankcase seal on my 28hp speeditwin and I am not sure where the retainer ring(snap ring) goes. There doesn't seem to be a definite grove to put it in.

Is there a newer seal that I could use to retrofit the motor so I wouldn't need the spring setup?

[boats.net]

We don't have any manuals or parts catalogs on motors older than 1968.