I have a 2019 Merc 60 40 jet and it’s done this from day one at idle. It is the impeller rubbing the wear ring.
I don’t want to have to get over the noise on a new set up with 14 hours.
You can see wear on the ring the lower left 1/3 the rest looks new. I’m taking it back and expecting them...
I have a new 2019 mercury 60 40 and it does the same thing from day one at idle and stops just above. I’m just past breaking in and still does it.
It is the impeller hitting the wear ring. I’ve loosened and centered the ring tightened with shims in place and still does it.
I even went as far...