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    Going To Replace Shift Shaft Seals on MC-1 Today...

    Hey all, So per the suggestions here in this forum, I'm going to replace the old shift shaft seal on my MC-1 with the newer design. The screw on the lever is seized and I saw a youtube where the guy states to just whack the lever w/ a cold chisel and split it. Since I have the new lever (bought...
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    Ready to Install Outdrive, However...

    OK, so I've replaced the impeller, water pocket cover, oil seal, flow tested both upper and lower housings...now I'm ready to install the outdrive back onto the bellhousing. Before I do, I've noticed this on the bellows(?) and it has me concerned. I mean, when I reinstall the outdrive, won't...
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    MC-1 Water Blockage?

    Hey folks, So if any of you are familiar with my other post, you know that I have some sort of blockage condition. Well, anyway...per Eric's suggestion, I pulled the outdrive off, stuck a hose to the water inlet, fired it up and a nice flow of water came flowing out of the Exhaust/Water exit...
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    MC-1 Back Together, Temp 175 Fahrenheit?

    First things first...Let me take a moment and thank you all for the advice and direction. I certainly couldn't have done it without you all. So, the impeller has been replaced, the upper/lower housings back together. Shifting is working just fine, so I slap the muffs on her and fired her up. Of...
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    Damaged Shift Washer?

    After doing some reading on this forum, I've come to realize that there are two washers that fit over the shift shaft on the MC-1, yes? A rubber one and a SS one. Well, I only have one and it appears to me as if it "malformed". Before I put the sterndrive back together, I feel I should probably...
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    Joining Upper and Lower Housings, Can't Turn Driveshaft...

    Pretty much says it all. Before I replaced the impeller, I'm pretty sure I was able to turn the driveshaft by turning the propshaft. Now, when attempting to join the upper and lower housings, the driveshaft seems as if it's locked. The propshaft spins clockwise and counterclockwise freely, but...
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    MC-1 Lower Housing Part ID...

    Hey all, Gonna be replacing the impeller now and reassembling. Before I do...just curious...what is this part? TIA
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    Impeller Badly Damaged...

    Hey all, Hope everyone is having a nice 3 day weekend. Me, I'm trying to get our new/used boat ready for at least a few trips out on the Sound before winter. So after doing my reading on this forum, I figured it was prudent to replace the impeller considering I don't know when it was last...
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    Will Any 4" 470 Heat Exchanger Fit?

    Hey folks, So I'm ready to upgrade my '78 Mercruiser 470 with a 4" heat exchanger. Question is...Will any 4" Mercruiser 470 heat exchanger work? Judging by the pics I see online, it appears as if they do but I'd like to be sure. TIA.
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    Draining The Oil On My 470?

    Hey all... So, I'm trying to get my recently purchased 1978 Fiberform Cuddy Cabin out on the water this weekend, but before I do I want to change the oil, right? So I bought a Quicksilver pump that screws over the dipstick tube as I see the thread on the tube. The problem I ran into was the...
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    Change Trans Fluid on a 1978 470 MerCruiser

    Howdy everybody, First post but it certainly won't be the last as I'm unfamiliar with motorboats. My wife and I just purchased a 21' 1978 Cuddy Cabin that has a 3.7 MerCruiser engine. Now I know my way around automobiles (all sorts of repairs and swaps), but I am unfamiliar with marine engines...
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