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  1. J

    Alpha 1 Gen 1 Upper Unit Hex Bolt Connecting Halves Broke Off

    Greetings, Working on an alpha 1 gen 1 drive, and when I went to separate the halves, the hex bolt which connects two halves at the stern (hidden by anode) twisted right off. To be clear I'm not describing the captive bolt that connects the anode, but the one that goes up from the bottom to...
  2. J

    Shift Cable Adjustment

    Greetings all, I've got a 3.0LX with a Sterndrive Engineering drive on the back. I have been around the moon trying to get this thing to shift correctly. Just replaced shift bracket (upgraded to the bracket that mounts to the starboard side of the engine due to faulty / obsolete cut out from my...
  3. J

    Alpha 1 Gen 1 Lower Shift Cable Lash Specs?

    Can anyone point me to the Lash Specs for the upper and lower shift cables on an Alpha 1 Gen 1? How much should the cable travel? My Equipment: I've got a pre-alpha transom bracket, with the transom mounted shift assembly and old spring / lever style shift interrupt behind a 3.0 LX motor...
  4. J

    MC-1 - Alpha 1 Gen 1 compatibility

    Hello! Finally got my 3.0 up and running, and we smoked the out drive on the first big fishing trip since putting the motor back in. Opened it up, and it's been on its way out for a while. Rusted bearings, shot gears, the works. Probably my fault, but I digress. Currently running an old...
  5. J

    Valve Cover Breather?

    Got a 3.0 LX here, trying to get the breather connected to the flame arrestor correctly. Any tips? It came with a hose that just blows right off. The outlet is sloped, and there is no barb or anything, doesn't look normal. I bought a 90 degree elbow hoping that was is, but the one I got...
  6. J

    Mercruiser 3.0 Exhaust Riser Leak / Compatibility?

    Hello again, Got my notor running, but have an exhaust leak issue. Have Sierra 18-1966-1 manifold, and sierra 18-1971 riser. This is a 3.0 LX motor, with a MC1 outdrive. Previous owner used the newer riser, and some cast iron sewer pipe to get down to the exhaust out on transom plate (j pipe...
  7. J

    MC-1 Transom Mount Switch ID.

    Hello, about to drop my 3.0LX back in the boat this afternoon. I realized I can't remember which switch does what on the transom. Anybody got an answer? Guessing neutral safety and shift cutout. Any idea which is which?
  8. J

    MC-1 Exhaust Flapper.

    Greetings, I've got my 3.0 in the garage this winter, just finished a total rebuild and wanting to be ready to roll come Halibut season. This has been a year long project, so forgive the mess in the bilge. Just getting things done as I can, and I haven't been back inside the boat since I...
  9. J

    Mercruiser 3.0 oil pan gasket

    Hey Yall, Getting set to get this oil pan swapped on this Mercruiser 3.0LX Pan gets here next week. Looking at gaskets, and somehow these are now running $80 a pop, $100 after shipping. Seems pretty steep for a glorified rubber band. Is there an automotive equivalent available? I've done some...
  10. J

    Mercruiser 3.0 Oil Pan

    Halfway through fishing season, and some oil is showing up in my bilge. Turns out it's time for a new oil pan. My engine is a late model 3.0 LX Alpha One. I'm seeing that there are oil pans for 1 and 2 piece rear main seal. Anyone know which I need? Hoping to get the pan on the way, and...
  11. J

    3.0 Valve Cover Breather Fittings?

    Greetings, Got a late model 3.0LX engine here, with a valve cover breather connection that is beveled? It's conical, with the top smaller in diameter to the bottoms, meaning that the hose connecting to spark arrestor likes to fall off? Is this a common problem? Also, I've got 140 psi in...
  12. J

    1998 Yamaha 9.9ELRX won't rev up past idle?

    Afternoon, Just picked up a new to me 1998 Yamaha T9.9ELRX outboard (along with the rest of the boat.) Looks to have had very gentle use. Engine ran great when I bought the boat last month. Its been sitting since then, as I've been sorting out the Merc outdrive (yikes!). Big motor runs and...
  13. J

    MC-1 Exhaust Bellows Slipping Off.

    Hey Y'all, Got bellows buttoned up, but the exhaust bellows pulled off immediately. Blasted through all the engine stuff today, where I'm more familiar. Rewired the trim switch. Trimmed the drive up, ran the engine, and sure enough the exhaust bellows popped right off on the gimbal housing...
  14. J

    MC-1 New Shift Cable Won't go Through?

    Evening fellers, Welp, I've got this incredibly frustrating bellows job just about knocked off (this is my first time). I've been through every damn thing a guy could go through getting this baby patched up. I've bored and tapped for the new shift cable (was done previously, but brass fitting...
  15. J

    MC-1 Update

    Well Ladies and Gents, I suppose you were correct here. Debating attempting to braze this bellhousing back together, but while cleaning up I found where previous owner had used some sort of epoxy to plug holes in the exhaust chamber. My thrifty side says.... "eh, exhaust is wet anyway. It's...
  16. J

    1973 MC-1 Outdrive

    Well, evening fellers. I got a wild hare and bought a 1973 glasply with a 1973 MC-1 hung on the back. Power is an inline 4 banger. Has an Alpha 1 3.0 LX spark arrestor on it and a rusty data plate so its true identity is currently between it and the lord. Runs good though. Got drive off...
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