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    Do carbed motors need a thermastat?

    Does a 2003 90hp ELPTO need a thermastat? Without the stat it will just make the engine run cooler wouldn't it?! Does anyone know the negative consequences without one? Thanks
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    Sand in lower unit?!

    I have a 2003 90 HP ELPTO on an 1860 alumacraft tunnel hull. I bought the boat and replaced the water pump housing/impeller in August. I noticed that there was a good amount of sand in the lower unit, but none in the water pump housing/impeller. I cleaned it out and have used it almost every...
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    New boat NEW PROBLEMS

    I have a 2003 90hp Mercury ELPTO saltwater series that idles rough and tries to stall in forward and reverse at low rpms, which is a HUGE pain when loading/unloading boat. I had the carbs cleaned, spark plugs replaced, and even checked to see if the choke was letting extra fuel in at idle (which...
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    15hp Lower unit oil leaks from cast?!

    Hello again, I have a 15hp 1988 yamaha 15sg(I believe). I have replaced the lower and upper seals in the lower unit (among other things) AND IT STILL LEAKS! I bought a "fancy" lower unit oil pump from walmart that I screwed into the fill and maxed the amount of oil. The oil is not leaking from...
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    Drive shaft nut in lower unit removal for yamaha 15hp

    Hello, I have a 1989 15hp yamaha lower unit that I am trying to pull the drive shaft out. I have the bearing carrier and the prop shaft removed, but how do I remove the gear from the drive shaft? I can see a nut, which I can get a wrench on, but I don't know how to grip the drive shaft in order...
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