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Ok I have a 1977 aquasport with a 2004 Yamaha 70hp 2 stroke with a 17 pitch prop that tops out at 28-29 mph. The boat use to have a 1978 70hp e rude and it ran 35-37 mph. I do not know what pitch prop was on the motor. Would that old engine just have more torque or maybe a 19 pitch prop? Anyways...
I got this motor from my uncle and I can't find any info on it. The serial tag is missing. And I can't find a listing for a 14 or super 14 made by evinrude except in 1956 and I know this motor is not that old. If anyone knows anything about this motor or where else I could find some...
