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Recent content by deanmcneill

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    3YM30 cuttiing out at sea

    Just bought a C&C34 with a 2009 Yanmar 3YM30 installed. Purrs like a kitten, but we just sailed boat a 30 hour slog through some heavy seas. Decided to motor-sail a bit in some heavy seas and engine, at 2500-2800 rpm, would suddenly lose revs then often quit. Would start up again in a few...
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    Weird water leak on 7.5 hp

    1976, 7.5hp Mercury Engine, starts great, runs fine and smooth, but there's water coming from around the top spark plug (see attached picture for location)! If I pull the plug wire, motor runs rougher so it seems the cylinder is firing. Is there a water jacket around the cylinder that could...
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    Loosening an almost seized part

    "A bushing, part of the steeri "A bushing, part of the steering, of my '79 merc 7.5hp is practically seized. See the pic attached (part colored red for clarity). It moves if I twist it with vice grips but it's too hard to twist to work well in use. The teeth are good so I'm hoping I don't...
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    This part should move right

    "I have a Mercury 7.5hp (1 "I have a Mercury 7.5hp (1979-ish) long shaft that I use on my sailboat. My shifter is seized. I've taken engine apart and attached a picture of the piece (I colored it red) that should move (it's at the top of the shift linkage). merc 7.5 shift linkage picture"">...
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