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    Quick question regarding Backdraft Jet sizing

    Just wondering if the same rule as changing main jets applies to the backdraft jet size. -0.02 for each 2000' you go up or so. If I have a 0.86 now at sea level at 6000 I would need a 0.80. Thanks all!
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    Help with finding jetting specs for high altitude

    Hello ladies and gentlemen, Wondering if you could possibly help me in finding some information about jetting for a Mercury 150hp, 6 cyl. 2-stroke. S/N 0G605507. I have the SELOC manual, and it provides zero reference about jetting at high altitude, or specifically, the size and which jets to...
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    Mercury 150 High Altitude Jetting - Maybe...

    Hello everyone, Had what I thought was a relatively simple procedure here that is blowing up in my face. Here is my engine: 1998 Mercury 150L (2-Cycle, 6-Cyl, Oil Injected, 3 Carb) S/N 0G605507 I bought a Seloc manual, and in the manual, it states NOTHING about jetting for high altitude. It...
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    Uhhh, what motor do I have?

    Can anyone answer this question? I just bought a ProCraft fish & ski, and it has a Mercury 150hp, built in 1997, engine year 1998. I would really like to pickup a manual for this engine, but I'm gettting mixed info in my own research. Serial # 0G605507 I'm seeing everything from it being a...
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    Old boat, New captain - Could use some advice

    Good afternoon everyone... I could use a bit of advice for a boat restoration project I've been working on. This is my 1st boat, so do your best to bear with me. My problem is that from what I have read, and my manual states that my engine should be operating in the 4800-5500 rpm range. Right...
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