Hi all, I'm new here, and to old Yamahas, I'm more familiar with old evinrudes. I apologize for a maybe long winded post.
I believe this to be a 1985-1986 Mariner 8M, but built by Yamaha. Parts fiches here list it as an 8B hp. I have a partial serial number (painted over) 677-0153
I got it in...