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  1. J

    1977 Merc 850 - Revived but not quite there

    Greetings all. With a lot of help from folks around here, I sucessfully revived my 1977 Mercury 850. Plugs, carb rebuild, trigger wire repair, switchbox, fuel pump rebuild, and under-cowl fuel lines. I decided to have a marine mechanic handle the impeller change, control cable...
  2. J

    Big old outboard, no power tilt. How would you get it out of the water?

    Hello all... I have not had my current boat in the water yet, so i'm running down all the variables before an early march launch. One of my last concerns is lowering and lifting my non-power tilt motor. It weighs close to 250 lbs. I'm able to move it up and down on my own while it's on...
  3. J

    Using an old outboard on a new hull

    Friends.. I'm pondering using my old Merc 850 on a new deep-v hull. I'm looking at the alumacraft fisherman 160cs. The alumacraft specs state a 40 hp max outboard motor. When i use the coast guard formula, i get closer to 80hp. When rigging a setup like this would you trust the coast...
  4. J

    a few tuning questions

    Evening... So, a few have followed my "back to life" saga with my Merc850. Tonight I hauled the rig out of the garage and fired it up again. My goal - achieve operating temperature and allow to idle for a period of time. I wanted to get about 20 minutes of consistent run time. Why so long...
  5. J

    lower unit gear clash

    Forgive my ignorance on this. I'm pretty new to boating (as my post count and previous questions have exposed). How much gear clash, if any, is normal when engaging the lower unit into forward and reverse? I need to decide if a lower unit rebuilt is in order before putting my boat into the...
  6. J

    My Winter Project

    Well, i've been asking some questions around the Mercury outboard forum, but I haven't shared my actual project. Here it is. It is a 1971 Caravelle CX151 Trihull with an open bow, and walk-through windshield. It has a 1977 85 horse Mercury outboard that I recently brought back to life by...
  7. J

    Gushing carb...

    Evening again. Thanks to all of the suggestions on this forum, i got the carbs put back on my Merc 850 tonight, fuel pump rebuilt, fuel lines installed, and get this.. IT RUNS! After screaming up and down the driveway, i took a closer look.. I think i've botched something. When i prime the...
  8. J

    Old gasket Material

    Gents, I've finished the removal, disassembly, cleaning and rebuild of the two carbs on my '77 Merc 850, and have a quick question before i put them back on. When removing the lower carb, part of the old cardboard/asbestos gasket remained stuck on the intake. I'm not having much luck getting...
  9. J

    Merc 850 cable lock mechanism -

    I have a merc 850 that i'm trying to bring back to life over the winter, and i think I broke the locking mechanism that retains the throttle and shift cables.. I know, smooth move. Does anyone know where i might find a replacement? Are they pretty standard across mercs? I'm going to be...
  10. J

    Non-winterized Merc 850 - Starting Ideas?

    Evening all. New to this forum but I've been browsing for a while. Seems like an extremely knowledgeable group. I recently bought my first boat. A 1971 Caravelle 15' Tri-hull, with a 1977 (i think - haven't verified serial#) Mercury 850. I bought the boat in non-running condition. The...
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