08-02-2019, 08:39 PM
No the mix ratio stays the same as the mix goes through the crank case and get pushed into the cylinder/cylinders through ports as the piston moves up and down so it lubing the bearings at that point. If to much or to little mix is getting through then the adjustments are made with the carb jets and sometimes needle changes in the carb (very common practice in 2 stoke dirt bikes to re jet for altitude), not sure how common it has been for boat motors but think that most dealers at altitude left them with the stock jetting and let them run rich
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