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Gone
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1,824 Posts
I use a single keyway.....but make it 1/4". Never a problem. If it is a circle boat that also drives off the balancer then I would do 2 ea 1/4" keyways.
 

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"It's HONDO, honey"
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1,724 Posts
Two if it makes you feel better ones enough for a 8 71 pushin 15.
 

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"The" masheenist
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5,444 Posts
If it makes you feel better, it is much cheaper to add a keyway in the crank and balancer now, than it is to replace them if it DOESN'T work.

Brian
 

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"The" masheenist
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5,444 Posts
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