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    Lower unit Questions

    1979 Mercury 200 (20hp) thunderbolt. Ok, The engine is now running great. Thought I would drain and refill the lower unit and the oil came out looking like chocolate milk. So, I know that there is a leak somewhere. First Question is; on the lower unit there is a vent screw and in front of it...
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    Spark advance lever

    I have a 1979 Merc 20 thunderbolt and I think that I am having a sync issue. I pulled the carb on Friday because it would not run. Gave it a good cleaning and it started right up and idled perfectly. Great, problem solved? not so fast. Launched it Saturday morning-started right up, idled...
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    1979 merc 20 recoil spring

    Hi The starter rope broke on the above mentioned outboard. I have managed to replace the rope but I am not able to figure out how to re-tension the spring. Does anyone know the procedure? Thanks, Weiss Man
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    1979 Mercury 20 Idle screw

    Hi Guy's I recently purchaser a jon boat with a 1979 merc 20 and I have a general question then a diagnostic question. General question; The stearing arm has an idle screw on the end of it, and I would like to know how to set it. Any tips or tricks? I have been starting with an initial...
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    Mercruiser cooling system

    I have a 2000 Bayliner Capri 185 with the 3.0, 135 hp engine mated to an Alpha one out drive. I hooked it up to the hose yesterday and noticed something and I'm not sure if it means anything. The housing that mates everything up to the transom (on exterior of boat) has two ports at the bottom...
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