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    Trouble re-mounting lower unit

    I have a 96 Mercruiser 4.3LX Vortec 4BB Alpha one Gen two. I dropped the lower unit and installed a new water pump kit. I've done this a number of times with a gen one and never had any real trouble doing it without help. This is my first gen two. I put it in forward when I dropped it and made...
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    4.3 LX wiring diagram

    I have a 1996 Mercruiser 4.3 LX 4bbl Alpha 1 Gen 1. Trying to find a complete wiring diagram that includes the gauges and engine.
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    What happened now?

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. Put in new plugs, plug wires, dist. cap and rotor. It backfired once starting it but then started and went to a smooth idle. Sounded good. I let it run for 4-5 minutes to loosen up the oil to make it easier to extract through the dip...
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    Trim troubles

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. The up and down trim switch didn't work at all. Tried jumping solinoids and didn't even get a clicking sound. So I replaced the positive wire from the battery and the big fuse on the end of it. Then I replaced both solinoids, made sure...
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    Flames up when starting

    96 Mercruiser 4.3 L 4bb V-6 Vortec with Alpha One outdrive. Boat hadn't been used for about a year. Stored without gas. So two days ago I filled the tank, bought a new battery and it started up. Went to idle for a few minutes with the ears on and I shut it down. Today I cranked it over for about...
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    Stuck in forward?

    Have a 2004 Mercury 50hp 4 stroke EFI. Dropped the LU changed out impeller including base. Thought I had it in forward when putting it back together. Once together it stayed in forward regardless of where the remote was. Wouldn't hit nuetral or reverse. Dropped it again and put it on a stand...
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    Problem removing Water Pump base on 50hp outboard

    Have a 2004 Mercury 50hp 4 stroke EFI. Decided to change the bottom plate as well as the water pump base this year with my routine impeller change. I inserted a screwdriver in each recessed spot at the top of the base and started to pry. I believe it has been in there since day one because it...
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    Shifting problems

    2004 50hp Mercury 4cyl 4stroke EFI on a 17' Alumaweld. I have a side mounted control box. Shifting has never been as smooth as I would like it to be even after I had a shop adjust the cables. According to my manual the adjustment didn't align the cables correctly but I assumed they knew what...
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    Water in the Oil +

    84 Mercruiser 5.7l sterndrive, 4bbl, open cooling system. Last time out it back fired a couple times starting it and seemed normal running just above idle through the no wake zone. Once through I accelerated but didn't have enough power to plane out. Wouldn't go above 15mph. The oil dipstick...
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    2004 Mercury 4 stroke, 50 hp, EFI won't accelerate.

    Motor starts up and idles fine. Put it in gear at idle and it takes off at about 2mph like it always has. No issues until I attempt to accelerate. Then it acts like it wants to go for maybe one second before it starts to bog down and eventually die unless I bring the throttle back to an idle. A...
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    Need help identifying engine

    1984 Mercruiser 5.7L 260HP 350CI Sterndrive Alpha One Gen One. The only tag I've found is from a Quicksilver re-power several years ago. Makes it difficult ordering parts. I brushed off some coorosion today and found the block is stamped between the intake manifold and the fly wheel housing with...
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    Starter starts something spinning in the back of engine only, nothing in the front.

    84 Mercruiser 5.7L, 260 sterndrive, alpha one gen one. Last time out was beginning of March with no issues, ran fine. Expecting the grandkids in a few weeks so I filled up a large tote with water today, lowered the out-drive and went to start it to be sure it was still running fine. The starter...
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    Swapped Thunderbolt IV for Delco EST

    I replaced my thunderbolt IV ignition system with a Delco EST due to a lack of spark. With the tach and the shift interrupter switch disconnected for the first start up attempt it showed the no spark problem was fixed as there were bursts of flames shooting out of my Rochester 4 barrel carb...
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    Did my new coil die after one hour use.

    I have a 1984 Mercruiser 5.7L stern drive. My distributor cap contacts were green and corroded. Rotor contact looked just as bad and was seized to the shaft which was rusted. I had to cut it off. Before installing a new one, I emery clothed all the rust off the shaft. The nuts on the pos. and...
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    part # ?

    Trying to find a water pump kit (impeller and gaskets) for my outboard and no one recognizes the serial number. It's 2004 mercury 50hp four-stroke) elpt efi. Anyone here know?
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    Plug gap and Compression

    Have an older 1984 Mercruiser 5.7L 260hp (repowered 2003) but don't have an owner's manual. Getting 118 -120 psi on the cyl tested so far (six of eight) and all plugs are gapped at 32. Anyone know if these numbers sound right?
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    Replace or Repair, where to start?

    Overheated my 84 Mercruiser 5.7L. Didn't notice until it was badly smoking so I'm sure it's damaged even though it was running as good as usual. After it cooled, I pulled the thermostat and poured in a gallon of anti-freeze, and put it back together. It started right up and I headed for the...
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