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Mac 21 Outboard

3K views 3 replies 4 participants last post by  timebandit 
#1 ·
I'm sure there is a spec for the maximum HP O/B that can be safely run on a Mac 21, however, i don't have it!
Any suggestions
 
#4 ·
According to an original spec sheet I have it is a 10hp but I suspect that is for a 2 stroke for weight.

I have a 8 hp 2 stroke and reach 6kts at 1/2 throttle.
 
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