boat was idling a little low this season and would sometimes stall kicking into gear. Sooo I adjusted the idle screw in gear to just under 800rpm and I adjusted fuel mixture screw and it runs very good and starts very easy now. One problem, when in neutral it idles around 1100rpm but once in...
Soooo I found this site while trying to fix my boat. I have a 1999 3.0L Merc, freshwater only. Last season I was getting an overheat at high RPM 200+ degrees. I have a 160 thermostat. I assumed it was the impeller so I had that changed (housing as well) and I changed the thermostat myself...
