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    50hp 4stroke not reaching top speed

    Hello - I have a 16ft '05 smokercraft with a 50hp yamaha 4 stroke. With 3 people on board (big - totalling about 700lbs) we are unable to get to top speed. Only goes about 15 mph and only acheives 2800 rpm. If I drop a person, the boat goes 32 mph at about 4200 rpm. When I go at higher...
  2. C

    Inverted 2005 Yamaha 4 stroke 50hp

    I had a bad trailer accident with my boat and the motor was upside down for about a half an hour. Oil leaked out of the motor during the incident. I haven't tried to start the motor yet, wanted to get some advice before doing so. I'd imagine that I just refill the oil and start it up. Can...
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