Sno- Sport Boogging/Loosing power from 1/4 to 3/4 throttle

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thumper450
Posts: 3
Joined: Fri Nov 11, 2011 12:51 pm

Sno- Sport Boogging/Loosing power from 1/4 to 3/4 throttle

Post by thumper450 »

Hello, having an issue a newly accuired Sport bogging in the 1/4 to 3/4 throttle range. If you hold it wide open it picks up and screams along but as soon as you let off you pretty much have to hold it wide open again to get to gain any RPM. I know previous owner gutted the airbox, would this cause it? Also have carb apart right now and only has one rubber plug over the jet, should there be 2 and would this possible cause the condition. Been reading about flattened buttons in the clutches would this cause this? Any thoughts or experiences would be greatly appreciated.
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