You are right in that they are best set by finding the highest idle and backing off a bit. You may also need to put a set of vacuum gauges onto the intake
It is the fuel pump. Managed to find a pic of it on another site. Poor guy did the same thing I did. As it turns out it cannot be replaced and must either
I may be calling it something it's not, like I said it looks like a fuel pump to me, it may be something totally different (not familiar with marine
Medical hiccup...set me back a bit. Won't get to boat till end of May...stay posted.
What kind of motor is it? Evinrude, Merc? Sounds to me like you're missing the plastic key that goes against the flat spot on the drive shaft. When you