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October 11, 2020 at 9:28 pm
#218343
The dents on the piston make me think it has swallowed something. You’ll know once you finish opening it up.
Be sure to look for pin holes in that aluminum exhaust cover.
Lower unit removal is conventional–disconnect shift rod, unbolt it and drop it down.
Don’t forget the o-ring on top of the water pump when it goes back together, or it’ll drive you crazy.