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  1. J

    1973 mercruiser 120 I/O lower unit: Water leaks normal or indicate trouble?

    I have recently swapped out lower units on my out drive. When putting it on muffs, there are a couple of areas i have water coming out of that i do not recall seeing on my old unit. One is a steady stream coming out from the small hole on the forward starboad side of the prop shaft torpedo. One...
  2. J

    1973 mercruiser 120 I/O power trim non operational

    Could use some help with diagnostics: My power trim was working normally yesterday with the following exception: my upper trim limit is not connected, i use the top 2 buttons for up and the bottom button for in. Today, while raising the drive, the pitch and speedthe of the hydraulics seemed like...
  3. J

    1973 mercruiser 120/140 lower unit replacement interchange

    Hello All, I recently acquired a 1973 VIP 17' tri hull with a 120 Mercruiser (Engine S/N 3580172) (Sterndrive S/N 3645229)I/O that has been in my family for years. To my chagrin, first time out as the newest owner, i struck a submerged rock....hard. I have inspected the hull and hydraulics and...
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