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older twin 500 rotax engine goes full throttle on its own any suggestions i found crank case has a bit of a hole in it beside fan shroud could that be the cause im open for suggestions
 

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Suggestions? Try some punctuation - it'll make your posts easier to read.

Yes, a hole in your crankcase will cause problems. A two stroke engine needs a sealed crankcase for it to work properly. Any idea what caused the hole?
 
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