I have a 250 hummer dirt bike ,and installed an atc 200 carb ,cable and thumb throttle on it because I had everything laying around .Anyways ,that thumb throttle is the worst part of that bike ,my thumb gets severe cramps from using it ,but ,no matter what I can always drive it home by letting go of the bar and just pushing the throttle with my hand when I get cramped up with it .A twist throttle will be installed before I run it again .
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