Hello, make sure your spark plug is getting a good blue flame, if not you may need cdi, i replaced one on my atv, would idle all day would not rev up, cdi boxes is the brain of your atv, motorcycles tells it what to do as far as firing, timing advance, hotter fire to plug etc..my atv is a 2000 350 warrior, their known to not have very reliable cdi,lots of problems with warrior cdis....
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