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  1. G

    Model # help

    Just picked up a 79 1/2 115, s/n 7131394 first run of ADI. Looking for parts, s/n is not recognized. Could somebody provide model # to use for parts lookup. There is no welch plug on powerhead, as block was replaced in 1982. I know unit rated at crank, what is equivalent prop shaft rating...
  2. G

    1983 Merc 115 upper water tube seal replacement s/n7200692

    Is it possible to replace upper water tube seal from below? I wanted to avoid pulling powerhead and exhaust divider if I could. Anyone done it and any tricks? Thanks Gary
  3. G

    83 Merc 115 switchbox failure cause

    83 Merc 115 s/n 7200692 propped for 5500 rpm Had boat out last week, ran like top for two hours, weathered a storm out on the river, when went to throttle up, engine wouldn't break 1200 to 1500 rpm. Got home, checked spark, 2,4,6 dead. DVA testing done. Found lower switchbox toasted. Both...
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