service bulletins

Discussion in 'Outboards' started by starville, May 18, 2008.

  1. starville
    Joined: May 2008
    Posts: 21
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Pearl Beach MI

    starville Junior Member

    Does anybody have access to service bulletins for Mercury MerCarb for 1976 20 hp? (or any merc stuff at all, I own 3 of them. The 20 is the only problem child lately) Thank you
     
  2. powerabout
    Joined: Nov 2007
    Posts: 2,931
    Likes: 66, Points: 48, Legacy Rep: 719
    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    I dont think there was any service informations of 76 20's...
    I'd be guessing but I owned one when I was an apprentice and dont remember re working anything.
    Not a bad engine as long as you keep it in fresh water.
     
  3. starville
    Joined: May 2008
    Posts: 21
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Pearl Beach MI

    starville Junior Member

    Yes, this one is in Michigan fresh water. I did find a pile of bulletins online, but nothing pertinent to the 20 hp, as you said. After all the necessary repairs I did to this one, I finally had the prop reconditioned. It had no obvious damage, but that was the only thing left. Wish I could have put a tach on it much earlier. Either the hub was slipping to some extent, or the blades were bent and not pumping solid water, allowing the engine to over-rev and the fuel pump apparently was not keeping up. No more fuel starvation at full throttle with the new prop.
     

  4. Jango
    Joined: Aug 2005
    Posts: 519
    Likes: 7, Points: 0, Legacy Rep: 63
    Location: Mid Atlantic

    Jango Senior Enthusiast

    I have a 1975 Merc, 20HP. Absolutely Trouble Free. Bought it new and used quite often up to 10 years ago when I started using a larger Boat/Motor.
     
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