Hayter 56 is reving really loudly?

Hello, recently purchased 2005 56, starts pefectly, as soon as you move the lever off of choke, the engine is reving really loudly like the throtle is jamed open? this happens on hare and tortoise setings any ideas what it could be please.
eddie, April 2012


done
try restting the cable on the on the power lever, might be too tight, and its makeing it rev at full power only..

m, April 2012
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