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  1. Zeusdafreak1

    Does my motor have a thermostat

    1983 Mercury 40hp Serial #6141789. Does my motor have a thermostat? The motor in the driveway with ear muffs was peeing warm, then extremely hot, then warm again. I put it in lake and it was very erratic on peeing. Sometimes it would, sometimes it wouldn't. Before dropping the foot I am...
  2. Zeusdafreak1

    My battery isolator doesn't seem to work

    I added a second battery 2 months ago. I used a battery isolator I purchased from Fleebay. The alternator charge wire goes to center post and each side post goes to each battery from the isolator. My ground from my auxilary battery is grounded to my original cranking battery because it was the...
  3. Zeusdafreak1

    2006 4.3 Mercruiser Oil Leak up front

    I have discovered an oil leak. Its leaking from right behind the main pulley from on the botton side. It looks as though it is coming from the timing cover. There is a small sensor(that you can plug in to to service I assume) just above this. I removed the plug and it has a red o-ring on it. I...
  4. Zeusdafreak1

    Thinking of changing to 4-Blade

    I have a Tahoe Q4 Sport 19.5 ft with a 4.3 Mercruiser Sterndrive 190 HP. I currently have a 14.5 x 23P 3-blade aluminum on the boat and it got chewed a bit yesterday(hit concrete landing didn't trim up enough on shallow landing). Anyway I have a brand new second prop in the box but its a 14.5 x...
  5. Zeusdafreak1

    What is my recommended RPM Range?

    I have a 1967 Merc 200 20 HP outboard. How would I find out what my recommended RPM range is. I have 3 different props and a Tiny Tach on its way. I need to know what should I shoot for WOT. Does anyone know this RPM range or max RPM at WOT?
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