Re: Powerhead removal advice, ’79 OMC 9.9?

[theodore]

My 15 is a 1986. It has cooling system problems that are not fixed by servicing the pump. It’s had a hard life in salt water, so I suspect it has grommet problems. I haven’t investigated to see what kind of "updated grommet design" would be used in mine.

I think I once saw a picture of a grommet "failure" where the walls of the grommet had caved in due to a salt buildup between it and the casting it was inserted in. Maybe try to "glue" the walls of the grommet to the casting, so the salt can’t wick its way in between the two?