Greetings,

I've never owned an outboard powered boat, but just purchased my first
one with a 40HP Mercury 2-stroke. At idle, the motor seems to idle
quite rough; so rough that my wife asked me if it was going to fall
off the boat!

I know the smaller 2-strokes are notorious for idling roughly, but
just how rough is normal I don't know. The motor has less than 50
hours, and was checked thoroughly before I purchased the boat.

Could the idle speed mixture be off, or should I just resign myself
that this is the way these things idle?

Thanks!