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    MCM-140 Manifold attachments

    Hi guys, My MCM-140 manifold had a lovely crack in it, and had to be replaced. The new manifold did not come with new end plate & water intake, so I removed them from the old manifold, removed rust, gave'em a nice new coat of paint, and now I'm ready to put them onto the new manifold. The...
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    Prop & RPM Question

    Hi guys. My boat has a Mercruiser 140 3L I/O engine. The maximum RPM for this engine is 4200-4600. I just want to confirm that my understanding is correct: 1. The prop on my boat should be one that produces a max RPM at WOT that falls between these numbers...right? The boat is still...
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    Can I make trailer signals brighter?

    Hi guys. When I tow my boat in daylight, the signals on the trailer are barely visible. When I turn my running lights on, all the lights are clearly visible, but the signals are still low. Using a voltmeter (set at 10V scale), I determined that the connection at my vehicle's plug is dishing...
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    Johnson 9.9 Oil leak

    Hi guys. My '85 Johnson 9.9 has been leaving post-use puddles of milky oil on my driveway. I'm pretty sure I have a seal leak, but in my search for answers, I've read that 2-strokes can have residual motor oil drip out as well, which can be mistaken for a leak. I'm hoping you guys can help...
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