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  1. C

    Lower Unit Question

    I am redoing the lower unit for a 1970 mercury 50horse 500. The book calls for 210ft lbs (N/M) of torque on the plastic cover nut. That seems like huge amount for a plastic piece. I dont even have a torque wrench that goes that high. I was wondering if someone could give me the right amount, or...
  2. C

    No water coming out? 1970 Mercury 500 50hp

    Engine starts right up...i had the ears on it. and no water came out. i shut it off almost immediately. Thinking that the water pump was bad. Went and bought a whole new replacement. I get it apart and it looks like new. I know i should have prolly taken it apart b4 i bought the new one but i...
  3. C

    Year of mercury?

    i just got a boat and everything i need for it for 250 bucks. its a project boat...well first of i need the year of the motor and i cant seem to figure it out. i was told that if i could post hte serial number here someone should be able to tell me. its a 50hp mercury and the serial number is...
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