Reply To: Gearcase leak…where? how?

[Don]

I don’t think so. Like others have said, the low pressure settings test the seals, the higher setting is for orings or the spaghetti seal…
If it were mine, I would leave the drain plugs out for a few days with the gearcase tipped forward so the fill plug is at the lowest point in an effort to drain any left over emulsified gear lube out of there…
Next, I would probe the threaded pockets where the drain/fill screws reside in the gearcase to make sure this isn’t a case of left over gaskets in there…Then use new OEM plug gaskets: 311598. Thread one new gasket/seal/washer onto each drain plug…
Finally, you may want to consider using some of the better OEM lower unit lubes that are made to “absorb” a certain amount of water without losing much lubricating qualities.
I definitely would not pull this thing apart…