I have a 95 mercury 150 and when i go forward into gear its fine but from forward to reverse it makes an awful grinding noise then goes into gear... also happens from reverse to forward.
Re: 95 Mercury 150 grinding when getting into gear
It's dog clutches. They'll clatter if you shift them slowly. If you shift it right, you'll get a little klunk. If your idle is too high, you'll get a resounding klunk, and maybe some clatter.