Sounds like you had a bad day.
I think you are doing the right things for your motor. Here are the
instructions from the manual for my Mercury 2.2 (aka Tohatsu, Nissan, etc).
I'm sure this is copyrighted material and I hope they don't mind my sharing
it, given the circumstances.
Attention required following a complete submersion:
1. Wash the entire motor with clean, fresh water to remove mud, silt, weeds.
salt. etc.
2. Remove the spark plug and purge the engine and carburetor of as much
water as possible ("crank" engine with the spark plug hole facing downward).
3. If compressed air is available, "blow dry" the the engine internally and
externally.
4. Pour a liberal amount of Quicksilver Engine Cleaner of Quicksilver Formula
50-D 2 cycle outboard lubricant in to the engine via the carburetor and the
spark plug hole.
5. Manually "crank" engine to distribute the lubricant withing the engine,
then drain excess lubricant from engine.
6. Re-install spark plug and spark plug lead.
IMPORTANT: If it appears that the engine DID NOT take in any foreign material
(mud, sand, weeds) and "cranks" freely, the engine should be started. If
there is evidence that foreign material had entered the engine, the engine
should be disassembled and cleaned.
7. Start engine and operate at a low RPM for a minimum of 5 minutes, then run
at varied throttle settings for an additional 15-20 minutes. (Normal
operation will continue the drying process, displacing remaining moisture and
providing internal lubrication .
8. If engine performance still indicates engine trouble, take motor to an
Authorized Dealer for further service.
As I, like most, live in fear of capsize, I'd be interested in learning more
about what happened to you and how you think it might have been prevented.
Only if you feel like talking about it, of course.
Best regards,
Dave Kautz