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    Alpha one gen one trim won't go all the way down

    I always park the boat on the same spot on my driveway so I know how far the skeg is from the concrete, and this year after getting the boat out of storage, the skeg is a good two inches or so higher than usual. Same elevation in the front of the boat on its support. I've calibrated the trim...
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    Shift interrupt moving when increasing throttle

    When I shift into forward, shift interrupt stays put, but when I push the throttle it closes the interrupt. Not sure how it should behave when not running / out of water. I went through the cable adjustment procedure again, and now I have the shift interrupt staying put when I push throttle...
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    Increasing travel of remote shift cable

    Stern drive manual says the length of travel between forward and reverse should be 3", plus/minus 1/8". Mine travels 2.75". Close, but not quite in spec. I don't know of any way to change the distance of travel.
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    Alpha one gen one drive rotation?

    Reading the manual for the stern drive shift cable adjustment and it has two methods one for right hand rotation drive and one for left. What is the Alpha one gen one?
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    Troubleshooting stiff throttle

    Mercruiser 3.0, alpha one gen 1 outdrive. Throttle on the boat has been very stiff since I bought it. Takes a lot of muscle to get the boat up to speed. I've removed the throttle and upper shift cables and they both slide easy with my hand. Shift linkage on the engine moves easily, and the...
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    How often to replace points ignition?

    Just curious how often folks are replacing the distributor components. I'm going to be summerizing my boat soon, and I read the sticky in this forum and it sounds like the author suggests doing it every year. That seems excessive. I was hoping to just hook up the muffs and fire her up. Did...
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    Fuel water separator and fuel filter on 3L

    I put a fuel water separator on my 3L last year. I am about to winterize and was going to replace both the separator and the fuel filter, but that made me wonder, does the water separator also filter particulate like the fuel filter does? Would the separator extend the life of the fuel filter...
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    Looking for service manual #13

    Would anyone be so kind as to post a link to this PDF? Thanks!
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    First start of season, how long for water from impeller?

    I hooked up my hose to the intake hose on the engine and ran water until it came out of the alpha one. Reconnected intake hose and put muffs on and started up on the first try so yay! But my son who was watching the back of the boat said water came out immediately then stopped.. How long does...
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    Fogging oil won't kill engine

    I'm in the process of winterizing my 3.0 and when spraying fogging oil down the carb the engine won't die. It struggles a bit but just keeps going. I sprayed for over twenty seconds. Just wondering why and if it matters. I ended up just killing the engine right after spraying.
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    Is 2000 RPM on muffs okay?

    I need to fine tune my new Faria tach and they said I need to turn the POT screw at idle and also at mid throttle. Is there any risk to running the engine on muffs at 2000 RPM for a few minutes? Just need to check RPMs with my digital tach and then adjust the POT screw to match. It's a 1990 3.0L
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    Visible exhaust after starting

    When I start my 3.0L, I can see visible blackish exhaust for maybe thirty seconds to a minute and then it seems to clear up. What might cause that? Is that normal?
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    Tach RPM increases when I turn on the ignition

    I installed a new Faria tach, the exact model that was in my boat that gives wildly inaccurate readings. Took photos to guarantee I wired up the new one correctly. When I turn on the ignition, before I start the engine, the tach dial begins slowly increasing, and when I turn off the engine it...
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    Lubricating throttle/shift cables

    The throttle control on my boat is pretty stiff and requires a decent amount of force to push it forward. I've seen a few videos where people force lubricant, either a liquid lube for bike cables, or a graphite lube, into the cable body. Or, should I just replace the cable(s)? Then, is it...
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    3.0 engine temp never gets over 160 F

    The dashboard gauge never goes over 160 and most of the time sits around 150 F. Shouldn't the engine run warmer than this? I have tested the temp sender with an ohm meter, and pulled the thermostat and tested that it opens/closes at 140 F. Engine is 1990 3.0L serial number 0D389001 Thoughts?
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    Help understanding vacuum test

    Engine is a 1990 3.0L, serial number 0D389001. In the water, in gear at idle of around 680 RPM I get around 15 hg. The needle bounces around a little bit. I have gone back and forth between idle speed and mixture screw and this is as good as I can get it. The needle is over a section on...
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    Which service manual do I need?

    I have two service manuals.. Number 13, and Number 26. I'm pretty sure 26 is the one I should be referencing but I'm not sure. How can I tell? They're both very similar in content. My engine serial number is 0D389001
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    Temp heat switch wire is connected to my temp sender?

    Engine is Merc 3.0L. Looking over the service manual, it shows that I should have the tan wire running from my sender to the gauge. and the tan/blue wire running from an optional audio warning water temp heat switch. Instead, my engine has both the tan and the tan/blue wires running from the...
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    Where to attach vacuum gauge to 3.0L?

    Engine serial number 0D389001. Basic newbie question. Where do I hook up the gauge?
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    Troubleshooting engine temp

    Next up on my list of things to fix, the temperature gauge, or thermostat? I used an ohm meter to verify the temperature sender is working. My temp gauge on the dash never goes above 100. Used a laser thermometer on the engine body and after ten minutes of idling the hottest spot I can find...
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