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  1. M

    Low compression on Merc 650

    Hey Guys, I have a 1964 Merc 650 that hasn't run for 6 or 7 years. I used Sea Foam in the cylinders and let it sit a couple of days before trying anything. Bought a new battery and did a compression check today. Not good. #1 125 #2 135 #3 10 It looks like #3 is a dead duck!!! #4 130 I sprayed...
  2. M

    Old 1964 Merc 650

    Hi All, I'm new to the site and enjoy it very much. I just bought a 64 Glasspar with a old merc on it. They say it ran the last time they used it which was 7 years ago. I've greased all the fittings and also changed the oil in the lower unit. I did find water in it and no oil so that's something...
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