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Old 07-27-2014 | 11:16 AM
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spidernad
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Originally Posted by helodrvr

for some reason I could tune the 201B and not the 664A on that engine.

Thanks for all the help.
Did they both have the same throttle bore/ venturi size? Just wondering if the one that worked had a smaller bore. I'm having the same bog issue on my Rotomotor 170 and wonder if it needs a smaller carb.

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Last edited by spidernad; 07-27-2014 at 12:11 PM.
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