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You also should never touch the timing on a 2 strk outboard. It is set mechanically and unless something catastrophic happens they don't go out of time.
Need the serial#. Is the shift on the tiller handle? Is the carb opening all the way? You probably need to do a link and sync. There is no screw to adjust
Use loc-tite 518 to seal between the crankcase halves paint both sides with it and reassemble. Make sure there are no gouges and the crank halves are
You have hit the jackpot on the quench, more than .O40 lessens the effect, the idea is to tolerate more compression. .045 is working backwards. You could
Hopefully maybe someone has had similar issues and can point me in the right dirrection. I have a 1986 merc. 9.9 (2stroke) i've acquired it about a year