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    installing new engine on pootoon

    Ok, I need some help on installing a new engine on my pontoon. It is a 21' or so pontoon boat. My questions are, how do I determine what motor shaft length I need. What is considered to be the keel base? How do I measure it from the top of the transom so I will know. What do people...
  2. O

    Motor Selection Help, thanks

    Ok, I just got a 90's model 21' or so Sun Tracker Pontoon boat. I am trying to determine what type engine would be best for it. Here is what I am thinking, please correct me if I am wrong. 4 Stroke ~90 HP 20" shaft (not sure on this one... I duno the transom length and how to figure this...
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