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    Jetski junkyards?

    This is a long shot... I'm looking for two matching engine/pump assemblies as a donor for a homebuilt jet boat. Is there a source for junk parts that I haven't been able to find? All of the sources I have come up with just seem to have one offs, no multiples of anything. I've even monitored...
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    Shift cable fine tuning vs. interrupt switch adjustment

    Boat shifts fine, passes the clunk test, etc. However, a minor annoyance is when going from reverse to neutral only and only when in the water, I sometimes have to go a blip past the neutral detent to actually get neutral. At first, I was thinking I may need to move the barrel nut a turn or...
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    Leak in transom area

    Oddball thing to check - the trim manifold. I say this because it doesn't look like any water is coming down from above, but rather up from the pocket where the hydraulic lines go down to the manifold. Since the hoses connect from the manifold to the rams, the angle of the rams can impart...
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    DIY Audio Alarm System

    Much more elegant than the one I dreamed up. Mine has an alarm horn silence switch, but it's just momentary and pointless unless you sit there and hold it while starting one handed. I "devised" a latching relay circuit that would silence the alarm horn when the switch was depressed, but as...
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    Fuel Line

    Yeah, don't use that. You want this one: https://www.napaonline.com/en/p/NBHH197 Part number NBH H197 Tip for shopping for "non-standard" (includes marine parts and anything that can't be found via year/make/model) stuff at NAPA: order online. If your local store doesn't have it, they...
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    Going from surge brakes to no brakes

    Bear in mind that most all (that I've seen) manufacturers require trailer brakes at lower weights than required by law... In this case, for a 2016 F150, Ford has this to say: Source: Owner's manual download link, page 277 of the document or page 280 of the PDF Is this "regulatory"? I guess...
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    Mercruiser MC1 drive (Pre-alpha) Rebuild

    The gear lube hose goes to the hole behind the screw where you pointed, which is normally the vent. Take the plug out and install. There's a bracket bolted to the top two studs on the left side of the drive; that's supposed to support the hose, but it looks like yours is broken. When you...
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    Boat swamped, let's see if we can get it running...

    In that case the one I posted is a bit overkill, lol Any of these work? IP65, 3A DC: https://www.digikey.com/en/products/detail/moujen/M22S-T22SF02-Y/16362337 IP66, 8A DC, but it's 3 position (off/off/on)...
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    Boat swamped, let's see if we can get it running...

    I'm guessing you're working with 240V and 10 amps. I'd go for an industrial style disconnect switch that's NEMA 4 rated. Visit an electrical supply house, a lot of these switches and contacts are customizable and mix and match, they can help you configure exactly what you need. Here's an...
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    Lower shift cable.....

    Hopefully someone will validate my reply for you, but I believe that Quicksilver 8M0176524 (formerly 865436A03) solves all shift cable replacements since the beginning of time. (Well, 1978 and up, although it comes up as a suitable replacement for my 1975 and a similar style with the brass nut...
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    What sealent for trim distribution block?

    I just replaced mine (1975 MC-1) which uses Sierra gasket 18-0342. I think 1982 and later use Sierra 18-0388. Either way, it’s called the trim manifold gasket and it’s located on the gimbal housing parts diagrams. Buy 2 because they’re easy to damage when you’re fiddling around with getting...
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    MC-1 bellows clamp preferred locations

    Not sure what procedure you’re using, but I put the u joint bellows on the bell housing, the exhaust bellows, shift bellows and water hose on the transom. Push the shift cable through the bellows, then hook the water hose up to the bell housing and tighten the clamp, push the u joint bellows...
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    Alternative to drilling your alignment tool to install gimbal bearings

    That's right. I cut it long expecting to hit the pipe with a hammer, but given that the pipe itself weighs about 5 lbs that's a decent enough hammer on its own. Even schedule 40 would weigh about 4 lbs which is still better than the 3 lb drilling hammer I had handy.
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    Alternative to drilling your alignment tool to install gimbal bearings

    Maybe someone has already figured this out, but it was one of those "eureka" moments and I was too excited at it actually working to not share. If you have one of the engine alignment tools that requires drilling a 3/8" hole through the alignment tool to use the gimbal bearing driver (such as...
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    FWC Merc 165 riser gasket?

    Heeey... that's it! To clarify, it is a six (250 CID) and that appears to be the correct part, although my dimensions are off by 1/16 (LOL) Thank you!!! I was beginning to think that this was either a "custom" job or had parts provided by San Juan Engineering (the HX manufacturer) and I was...
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    FWC Merc 165 riser gasket?

    I have a Merc 165 with aftermarket fresh water cooling; this includes the exhaust manifold, which means the manifold water jacket does not communicate with the riser. The original installation had a grafoil type gasket that covered the holes in the water jacket, and there was no block off...
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    1975 Formula F18

    No reason to suspect an issue, but I was installing new hoses and a fuel sending unit and I got to thinking about the condition of the fuel tank where I couldn't see (and that was pretty much 98% of it since it's permanently installed, which I hate) so I decided to pressure test. I only pumped...
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    1975 Formula F18

    Yeah, a tear out would give me an opportunity to get rid of the hideous upholstery, regardless of the fact that it's in great condition. I did some more investigation, and I believe the worst extends a few inches forward of the aft tank bulkhead, leaving about a 2' long punky area. Since it's...
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    1975 Formula F18

    Been boatless for a decade now. Started perusing classified ads last fall and found this old formula in great shape. It was a little older than I was looking for. It had two fewer cylinders than I was looking for. Had an interior way uglier than I was looking for. But damn was it cool, and...
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    Epoxy for "over drill and fill" for exterior screws

    Thanks everyone, just wanted to make sure. Slapping "marine" on something doesn't really mean much except to the profit margin.
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