Quadzilla thumb throttle problem

Associate
Joined
7 Jan 2013
Posts
168
Location
England
Just put the thumb throttle on and it's starting revving high when i stick the clutch in and start the quad i'm not even touching the throttle luckily i had the brakes on what could cause this?

The wire seems fine no tightness in the wire.
Could this be a carburetor problem not been tuned probably?

Should I try turning the carburetor all the way down?
 
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