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  1. GarySequim

    Missing 3.7L Alpha One Gen 1 Water Shutter Valve

    I pulled my boat out to run it in the driveway for the first time this year. It started fine and water was exiting the stern drive as it should. And then a giant white cloud blew out of the exhaust, unaccompanied by water. Steam, I hope. I quickly shut it down and pushed the boat back into...
  2. GarySequim

    Merc 170 3.7L Cooling System Question and Water Pump Repair

    Attached is a manual I made for my 3.7l Alpha One Gen One, based on a number of good sources. Mine is reorganized so the impeller replacement work explained in a more logical order than the books I found.
  3. GarySequim

    The art of Alpha One Gen One Maintenance

    I'm replying Okay, here, I hope, is my final revision of the how-to guide. This time it is based on having done the job, not just reading about it. And yes, the boat runs fine and hasn't sunk yet ... and I'm a 75-year-old first-time power boat owner.
  4. GarySequim

    The art of Alpha One Gen One Maintenance

    I can't figure out how to delete the file attachments in posts 1 and 9, but here's the 4-20-21 updated version. As you can tell, the how-to document is a work in progress.
  5. GarySequim

    The art of Alpha One Gen One Maintenance

    It's clear that Clymer's manuals are not held in high regard on this forum, a warning I take to heart. For that reason, I have now double-checked my material carefully against the Merc #6 manual. I even re-watched some of the videos I'd already seen. I did not find anything wrong with what...
  6. GarySequim

    The art of Alpha One Gen One Maintenance

    Thank you. I'll start a new thread if my next attempt at diagnosing the water leak fails. I have a new checklist to work through this week, part of which entails leaving the engine cover at home. I'll put the boat in the water and have a friend drive while I try to thoroughly inspect the...
  7. GarySequim

    The art of Alpha One Gen One Maintenance

    Thank you. I've read a bunch of your posts and watched a lot of videos. I appreciate all you've shared, past and present. The problem for someone who hasn't done much work on an Alpha One yet -- save for water pump and impeller replacement -- is to distinguish the good on-line info from the...
  8. GarySequim

    The art of Alpha One Gen One Maintenance

    Thank you. The specs are from Manual #6, unless I missed something when rechecking them.
  9. GarySequim

    The art of Alpha One Gen One Maintenance

    Greetings. I am a new boater who is learning the art of Alpha One Gen One maintenance at the ripe young age of 75 (If 75 is the new 55, what does that make a 50-year-old?). I have the Clymer and Mercruiser #6 manuals. I've watched videos and read forum threads. I just haven't yet done...
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