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  1. M

    1968 Mercury Thunderbolt 650 65hp outboard problems (PLEASE HELP!)

    I have since had the boat out and all of my gears have been working just fine (fwd, neutral, rev.). I have always suspected there has been water getting into my lower unit, so I frequently have been changing the gear oil. The last time I was out I had just put fresh oil in and when I went to...
  2. M

    1968 Mercury Thunderbolt 650 65hp outboard problems (PLEASE HELP!)

    Thanks for replying to my message! I'm not extremely good with motors, but am trying and learning throughout this process. I disconected both the shifter and throtle cables. They were in the correct place on the motor, with the shift cable engaging first when moving from neutral to fwd or...
  3. M

    1968 Mercury Thunderbolt 650 65hp outboard problems (PLEASE HELP!)

    I have recently purchased an older boat with a 1968 mercury 65hp 650 thunderbolt with a mercontrol. I start the motor in neutral just like you would any motor, but the boat/prop move forward. If I move the mercontrol to forward, the prop/boat moves forward, but when moving it into reverse it...
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