Being a "vacuum carb" it is VERY forgiving, though you might benefit form fooling with jets, stock being a 103.
Some jetting info here:
http://www.chinariders.net/modules.p...ewtopic&t=8995
I have a pair of vacuum carbs off of a 400 Yamaha, that can be split up, and singly used, here I want to "play" with, when the snow goes.