2 stroke vs 4 stroke

Those tugs motors turned about 600 if they were of the high rpm persuasion. Did your dad show you how to reverse one?

He was off that tug before me. My first memories of him were at sea for 6-12 weeks at a time on the North Star, doing the Seattle to nome run.
 
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Four strokes are messy! YAmahas got oil spewing from both sides and the front and the crf isn't much cleaner. The oil/filter process and frequency is messy.



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